gtk/auto/

scrolled_window.rs

// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use crate::{
    Adjustment, Align, Bin, Buildable, Container, CornerType, DirectionType, PolicyType,
    PositionType, ResizeMode, ScrollType, ShadowType, Widget, ffi,
};
use glib::{
    object::ObjectType as _,
    prelude::*,
    signal::{SignalHandlerId, connect_raw},
    translate::*,
};
use std::boxed::Box as Box_;

glib::wrapper! {
    /// GtkScrolledWindow is a container that accepts a single child widget and makes
    /// that child scrollable using either internally added scrollbars or externally
    /// associated adjustments.
    ///
    /// Widgets with native scrolling support, i.e. those whose classes implement the
    /// [`Scrollable`][crate::Scrollable] interface, are added directly. For other types of widget, the
    /// class [`Viewport`][crate::Viewport] acts as an adaptor, giving scrollability to other widgets.
    /// GtkScrolledWindow’s implementation of [`ContainerExt::add()`][crate::prelude::ContainerExt::add()] intelligently
    /// accounts for whether or not the added child is a [`Scrollable`][crate::Scrollable]. If it isn’t,
    /// [`ScrolledWindow`][crate::ScrolledWindow] wraps the child in a [`Viewport`][crate::Viewport] and adds that for you.
    /// Therefore, you can just add any child widget and not worry about the details.
    ///
    /// If [`ContainerExt::add()`][crate::prelude::ContainerExt::add()] has added a [`Viewport`][crate::Viewport] for you, you can remove
    /// both your added child widget from the [`Viewport`][crate::Viewport], and the [`Viewport`][crate::Viewport]
    /// from the GtkScrolledWindow, like this:
    ///
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// GtkWidget *scrolled_window = gtk_scrolled_window_new (NULL, NULL);
    /// GtkWidget *child_widget = gtk_button_new ();
    ///
    /// // GtkButton is not a GtkScrollable, so GtkScrolledWindow will automatically
    /// // add a GtkViewport.
    /// gtk_container_add (GTK_CONTAINER (scrolled_window),
    ///                    child_widget);
    ///
    /// // Either of these will result in child_widget being unparented:
    /// gtk_container_remove (GTK_CONTAINER (scrolled_window),
    ///                       child_widget);
    /// // or
    /// gtk_container_remove (GTK_CONTAINER (scrolled_window),
    ///                       gtk_bin_get_child (GTK_BIN (scrolled_window)));
    /// ```
    ///
    /// Unless [`policy`][struct@crate::ScrolledWindow#policy] is GTK_POLICY_NEVER or GTK_POLICY_EXTERNAL,
    /// GtkScrolledWindow adds internal [`Scrollbar`][crate::Scrollbar] widgets around its child. The
    /// scroll position of the child, and if applicable the scrollbars, is controlled
    /// by the [`hadjustment`][struct@crate::ScrolledWindow#hadjustment] and [`vadjustment`][struct@crate::ScrolledWindow#vadjustment]
    /// that are associated with the GtkScrolledWindow. See the docs on [`Scrollbar`][crate::Scrollbar]
    /// for the details, but note that the “step_increment” and “page_increment”
    /// fields are only effective if the policy causes scrollbars to be present.
    ///
    /// If a GtkScrolledWindow doesn’t behave quite as you would like, or
    /// doesn’t have exactly the right layout, it’s very possible to set up
    /// your own scrolling with [`Scrollbar`][crate::Scrollbar] and for example a [`Grid`][crate::Grid].
    ///
    /// # Touch support
    ///
    /// GtkScrolledWindow has built-in support for touch devices. When a
    /// touchscreen is used, swiping will move the scrolled window, and will
    /// expose 'kinetic' behavior. This can be turned off with the
    /// [`kinetic-scrolling`][struct@crate::ScrolledWindow#kinetic-scrolling] property if it is undesired.
    ///
    /// GtkScrolledWindow also displays visual 'overshoot' indication when
    /// the content is pulled beyond the end, and this situation can be
    /// captured with the [`edge-overshot`][struct@crate::ScrolledWindow#edge-overshot] signal.
    ///
    /// If no mouse device is present, the scrollbars will overlayed as
    /// narrow, auto-hiding indicators over the content. If traditional
    /// scrollbars are desired although no mouse is present, this behaviour
    /// can be turned off with the [`overlay-scrolling`][struct@crate::ScrolledWindow#overlay-scrolling]
    /// property.
    ///
    /// # CSS nodes
    ///
    /// GtkScrolledWindow has a main CSS node with name scrolledwindow.
    ///
    /// It uses subnodes with names overshoot and undershoot to
    /// draw the overflow and underflow indications. These nodes get
    /// the .left, .right, .top or .bottom style class added depending
    /// on where the indication is drawn.
    ///
    /// GtkScrolledWindow also sets the positional style classes (.left,
    /// .right, .top, .bottom) and style classes related to overlay
    /// scrolling (.overlay-indicator, .dragging, .hovering) on its scrollbars.
    ///
    /// If both scrollbars are visible, the area where they meet is drawn
    /// with a subnode named junction.
    ///
    /// ## Properties
    ///
    ///
    /// #### `hadjustment`
    ///  Readable | Writable | Construct
    ///
    ///
    /// #### `hscrollbar-policy`
    ///  Readable | Writable
    ///
    ///
    /// #### `kinetic-scrolling`
    ///  Whether kinetic scrolling is enabled or not. Kinetic scrolling
    /// only applies to devices with source `GDK_SOURCE_TOUCHSCREEN`.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `max-content-height`
    ///  The maximum content height of `scrolled_window`, or -1 if not set.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `max-content-width`
    ///  The maximum content width of `scrolled_window`, or -1 if not set.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `min-content-height`
    ///  The minimum content height of `scrolled_window`, or -1 if not set.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `min-content-width`
    ///  The minimum content width of `scrolled_window`, or -1 if not set.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `overlay-scrolling`
    ///  Whether overlay scrolling is enabled or not. If it is, the
    /// scrollbars are only added as traditional widgets when a mouse
    /// is present. Otherwise, they are overlayed on top of the content,
    /// as narrow indicators.
    ///
    /// Note that overlay scrolling can also be globally disabled, with
    /// the [`gtk-overlay-scrolling`][struct@crate::Settings#gtk-overlay-scrolling] setting.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `propagate-natural-height`
    ///  Whether the natural height of the child should be calculated and propagated
    /// through the scrolled window’s requested natural height.
    ///
    /// This is useful in cases where an attempt should be made to allocate exactly
    /// enough space for the natural size of the child.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `propagate-natural-width`
    ///  Whether the natural width of the child should be calculated and propagated
    /// through the scrolled window’s requested natural width.
    ///
    /// This is useful in cases where an attempt should be made to allocate exactly
    /// enough space for the natural size of the child.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `shadow-type`
    ///  Readable | Writable
    ///
    ///
    /// #### `vadjustment`
    ///  Readable | Writable | Construct
    ///
    ///
    /// #### `vscrollbar-policy`
    ///  Readable | Writable
    ///
    ///
    /// #### `window-placement`
    ///  Readable | Writable
    ///
    ///
    /// #### `window-placement-set`
    ///  Whether "window-placement" should be used to determine the location
    /// of the contents with respect to the scrollbars.
    ///
    /// Readable | Writable
    /// <details><summary><h4>Container</h4></summary>
    ///
    ///
    /// #### `border-width`
    ///  Readable | Writable
    ///
    ///
    /// #### `child`
    ///  Writable
    ///
    ///
    /// #### `resize-mode`
    ///  Readable | Writable
    /// </details>
    /// <details><summary><h4>Widget</h4></summary>
    ///
    ///
    /// #### `app-paintable`
    ///  Readable | Writable
    ///
    ///
    /// #### `can-default`
    ///  Readable | Writable
    ///
    ///
    /// #### `can-focus`
    ///  Readable | Writable
    ///
    ///
    /// #### `composite-child`
    ///  Readable
    ///
    ///
    /// #### `double-buffered`
    ///  Whether the widget is double buffered.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `events`
    ///  Readable | Writable
    ///
    ///
    /// #### `expand`
    ///  Whether to expand in both directions. Setting this sets both [`hexpand`][struct@crate::Widget#hexpand] and [`vexpand`][struct@crate::Widget#vexpand]
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `focus-on-click`
    ///  Whether the widget should grab focus when it is clicked with the mouse.
    ///
    /// This property is only relevant for widgets that can take focus.
    ///
    /// Before 3.20, several widgets (GtkButton, GtkFileChooserButton,
    /// GtkComboBox) implemented this property individually.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `halign`
    ///  How to distribute horizontal space if widget gets extra space, see [`Align`][crate::Align]
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `has-default`
    ///  Readable | Writable
    ///
    ///
    /// #### `has-focus`
    ///  Readable | Writable
    ///
    ///
    /// #### `has-tooltip`
    ///  Enables or disables the emission of [`query-tooltip`][struct@crate::Widget#query-tooltip] on `widget`.
    /// A value of [`true`] indicates that `widget` can have a tooltip, in this case
    /// the widget will be queried using [`query-tooltip`][struct@crate::Widget#query-tooltip] to determine
    /// whether it will provide a tooltip or not.
    ///
    /// Note that setting this property to [`true`] for the first time will change
    /// the event masks of the GdkWindows of this widget to include leave-notify
    /// and motion-notify events. This cannot and will not be undone when the
    /// property is set to [`false`] again.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `height-request`
    ///  Readable | Writable
    ///
    ///
    /// #### `hexpand`
    ///  Whether to expand horizontally. See [`WidgetExt::set_hexpand()`][crate::prelude::WidgetExt::set_hexpand()].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `hexpand-set`
    ///  Whether to use the [`hexpand`][struct@crate::Widget#hexpand] property. See [`WidgetExt::is_hexpand_set()`][crate::prelude::WidgetExt::is_hexpand_set()].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `is-focus`
    ///  Readable | Writable
    ///
    ///
    /// #### `margin`
    ///  Sets all four sides' margin at once. If read, returns max
    /// margin on any side.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `margin-bottom`
    ///  Margin on bottom side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `margin-end`
    ///  Margin on end of widget, horizontally. This property supports
    /// left-to-right and right-to-left text directions.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `margin-left`
    ///  Margin on left side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `margin-right`
    ///  Margin on right side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `margin-start`
    ///  Margin on start of widget, horizontally. This property supports
    /// left-to-right and right-to-left text directions.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `margin-top`
    ///  Margin on top side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `name`
    ///  Readable | Writable
    ///
    ///
    /// #### `no-show-all`
    ///  Readable | Writable
    ///
    ///
    /// #### `opacity`
    ///  The requested opacity of the widget. See [`WidgetExt::set_opacity()`][crate::prelude::WidgetExt::set_opacity()] for
    /// more details about window opacity.
    ///
    /// Before 3.8 this was only available in GtkWindow
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `parent`
    ///  Readable | Writable
    ///
    ///
    /// #### `receives-default`
    ///  Readable | Writable
    ///
    ///
    /// #### `scale-factor`
    ///  The scale factor of the widget. See [`WidgetExt::scale_factor()`][crate::prelude::WidgetExt::scale_factor()] for
    /// more details about widget scaling.
    ///
    /// Readable
    ///
    ///
    /// #### `sensitive`
    ///  Readable | Writable
    ///
    ///
    /// #### `style`
    ///  The style of the widget, which contains information about how it will look (colors, etc).
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `tooltip-markup`
    ///  Sets the text of tooltip to be the given string, which is marked up
    /// with the [Pango text markup language][PangoMarkupFormat].
    /// Also see [`Tooltip::set_markup()`][crate::Tooltip::set_markup()].
    ///
    /// This is a convenience property which will take care of getting the
    /// tooltip shown if the given string is not [`None`]: [`has-tooltip`][struct@crate::Widget#has-tooltip]
    /// will automatically be set to [`true`] and there will be taken care of
    /// [`query-tooltip`][struct@crate::Widget#query-tooltip] in the default signal handler.
    ///
    /// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and [`tooltip-markup`][struct@crate::Widget#tooltip-markup]
    /// are set, the last one wins.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `tooltip-text`
    ///  Sets the text of tooltip to be the given string.
    ///
    /// Also see [`Tooltip::set_text()`][crate::Tooltip::set_text()].
    ///
    /// This is a convenience property which will take care of getting the
    /// tooltip shown if the given string is not [`None`]: [`has-tooltip`][struct@crate::Widget#has-tooltip]
    /// will automatically be set to [`true`] and there will be taken care of
    /// [`query-tooltip`][struct@crate::Widget#query-tooltip] in the default signal handler.
    ///
    /// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and [`tooltip-markup`][struct@crate::Widget#tooltip-markup]
    /// are set, the last one wins.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `valign`
    ///  How to distribute vertical space if widget gets extra space, see [`Align`][crate::Align]
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `vexpand`
    ///  Whether to expand vertically. See [`WidgetExt::set_vexpand()`][crate::prelude::WidgetExt::set_vexpand()].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `vexpand-set`
    ///  Whether to use the [`vexpand`][struct@crate::Widget#vexpand] property. See [`WidgetExt::is_vexpand_set()`][crate::prelude::WidgetExt::is_vexpand_set()].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `visible`
    ///  Readable | Writable
    ///
    ///
    /// #### `width-request`
    ///  Readable | Writable
    ///
    ///
    /// #### `window`
    ///  The widget's window if it is realized, [`None`] otherwise.
    ///
    /// Readable
    /// </details>
    ///
    /// ## Signals
    ///
    ///
    /// #### `edge-overshot`
    ///  The ::edge-overshot signal is emitted whenever user initiated scrolling
    /// makes the scrolled window firmly surpass (i.e. with some edge resistance)
    /// the lower or upper limits defined by the adjustment in that orientation.
    ///
    /// A similar behavior without edge resistance is provided by the
    /// [`edge-reached`][struct@crate::ScrolledWindow#edge-reached] signal.
    ///
    /// Note: The `pos` argument is LTR/RTL aware, so callers should be aware too
    /// if intending to provide behavior on horizontal edges.
    ///
    ///
    ///
    ///
    /// #### `edge-reached`
    ///  The ::edge-reached signal is emitted whenever user-initiated scrolling
    /// makes the scrolled window exactly reach the lower or upper limits
    /// defined by the adjustment in that orientation.
    ///
    /// A similar behavior with edge resistance is provided by the
    /// [`edge-overshot`][struct@crate::ScrolledWindow#edge-overshot] signal.
    ///
    /// Note: The `pos` argument is LTR/RTL aware, so callers should be aware too
    /// if intending to provide behavior on horizontal edges.
    ///
    ///
    ///
    ///
    /// #### `move-focus-out`
    ///  The ::move-focus-out signal is a
    /// [keybinding signal][GtkBindingSignal] which gets
    /// emitted when focus is moved away from the scrolled window by a
    /// keybinding. The [`move-focus`][struct@crate::Widget#move-focus] signal is emitted with
    /// `direction_type` on this scrolled window’s toplevel parent in the
    /// container hierarchy. The default bindings for this signal are
    /// `Ctrl + Tab` to move forward and `Ctrl + Shift + Tab` to move backward.
    ///
    /// Action
    ///
    ///
    /// #### `scroll-child`
    ///  The ::scroll-child signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when a keybinding that scrolls is pressed.
    /// The horizontal or vertical adjustment is updated which triggers a
    /// signal that the scrolled window’s child may listen to and scroll itself.
    ///
    /// Action
    /// <details><summary><h4>Container</h4></summary>
    ///
    ///
    /// #### `add`
    ///
    ///
    ///
    /// #### `check-resize`
    ///
    ///
    ///
    /// #### `remove`
    ///
    ///
    ///
    /// #### `set-focus-child`
    ///
    /// </details>
    /// <details><summary><h4>Widget</h4></summary>
    ///
    ///
    /// #### `accel-closures-changed`
    ///
    ///
    ///
    /// #### `button-press-event`
    ///  The ::button-press-event signal will be emitted when a button
    /// (typically from a mouse) is pressed.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the
    /// widget needs to enable the [`gdk::EventMask::BUTTON_PRESS_MASK`][crate::gdk::EventMask::BUTTON_PRESS_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `button-release-event`
    ///  The ::button-release-event signal will be emitted when a button
    /// (typically from a mouse) is released.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the
    /// widget needs to enable the [`gdk::EventMask::BUTTON_RELEASE_MASK`][crate::gdk::EventMask::BUTTON_RELEASE_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `can-activate-accel`
    ///  Determines whether an accelerator that activates the signal
    /// identified by `signal_id` can currently be activated.
    /// This signal is present to allow applications and derived
    /// widgets to override the default [`Widget`][crate::Widget] handling
    /// for determining whether an accelerator can be activated.
    ///
    ///
    ///
    ///
    /// #### `child-notify`
    ///  The ::child-notify signal is emitted for each
    /// [child property][child-properties] that has
    /// changed on an object. The signal's detail holds the property name.
    ///
    /// Detailed
    ///
    ///
    /// #### `composited-changed`
    ///  The ::composited-changed signal is emitted when the composited
    /// status of `widgets` screen changes.
    /// See [`Screen::is_composited()`][crate::gdk::Screen::is_composited()].
    ///
    /// Action
    ///
    ///
    /// #### `configure-event`
    ///  The ::configure-event signal will be emitted when the size, position or
    /// stacking of the `widget`'s window has changed.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `damage-event`
    ///  Emitted when a redirected window belonging to `widget` gets drawn into.
    /// The region/area members of the event shows what area of the redirected
    /// drawable was drawn into.
    ///
    ///
    ///
    ///
    /// #### `delete-event`
    ///  The ::delete-event signal is emitted if a user requests that
    /// a toplevel window is closed. The default handler for this signal
    /// destroys the window. Connecting [`WidgetExtManual::hide_on_delete()`][crate::prelude::WidgetExtManual::hide_on_delete()] to
    /// this signal will cause the window to be hidden instead, so that
    /// it can later be shown again without reconstructing it.
    ///
    ///
    ///
    ///
    /// #### `destroy`
    ///  Signals that all holders of a reference to the widget should release
    /// the reference that they hold. May result in finalization of the widget
    /// if all references are released.
    ///
    /// This signal is not suitable for saving widget state.
    ///
    ///
    ///
    ///
    /// #### `destroy-event`
    ///  The ::destroy-event signal is emitted when a [`gdk::Window`][crate::gdk::Window] is destroyed.
    /// You rarely get this signal, because most widgets disconnect themselves
    /// from their window before they destroy it, so no widget owns the
    /// window at destroy time.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `direction-changed`
    ///  The ::direction-changed signal is emitted when the text direction
    /// of a widget changes.
    ///
    ///
    ///
    ///
    /// #### `drag-begin`
    ///  The ::drag-begin signal is emitted on the drag source when a drag is
    /// started. A typical reason to connect to this signal is to set up a
    /// custom drag icon with e.g. [`WidgetExt::drag_source_set_icon_pixbuf()`][crate::prelude::WidgetExt::drag_source_set_icon_pixbuf()].
    ///
    /// Note that some widgets set up a drag icon in the default handler of
    /// this signal, so you may have to use `g_signal_connect_after()` to
    /// override what the default handler did.
    ///
    ///
    ///
    ///
    /// #### `drag-data-delete`
    ///  The ::drag-data-delete signal is emitted on the drag source when a drag
    /// with the action [`gdk::DragAction::MOVE`][crate::gdk::DragAction::MOVE] is successfully completed. The signal
    /// handler is responsible for deleting the data that has been dropped. What
    /// "delete" means depends on the context of the drag operation.
    ///
    ///
    ///
    ///
    /// #### `drag-data-get`
    ///  The ::drag-data-get signal is emitted on the drag source when the drop
    /// site requests the data which is dragged. It is the responsibility of
    /// the signal handler to fill `data` with the data in the format which
    /// is indicated by `info`. See [`SelectionData::set()`][crate::SelectionData::set()] and
    /// [`SelectionData::set_text()`][crate::SelectionData::set_text()].
    ///
    ///
    ///
    ///
    /// #### `drag-data-received`
    ///  The ::drag-data-received signal is emitted on the drop site when the
    /// dragged data has been received. If the data was received in order to
    /// determine whether the drop will be accepted, the handler is expected
    /// to call `gdk_drag_status()` and not finish the drag.
    /// If the data was received in response to a [`drag-drop`][struct@crate::Widget#drag-drop] signal
    /// (and this is the last target to be received), the handler for this
    /// signal is expected to process the received data and then call
    /// `gtk_drag_finish()`, setting the `success` parameter depending on
    /// whether the data was processed successfully.
    ///
    /// Applications must create some means to determine why the signal was emitted
    /// and therefore whether to call `gdk_drag_status()` or `gtk_drag_finish()`.
    ///
    /// The handler may inspect the selected action with
    /// [`DragContext::selected_action()`][crate::gdk::DragContext::selected_action()] before calling
    /// `gtk_drag_finish()`, e.g. to implement [`gdk::DragAction::ASK`][crate::gdk::DragAction::ASK] as
    /// shown in the following example:
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// void
    /// drag_data_received (GtkWidget          *widget,
    ///                     GdkDragContext     *context,
    ///                     gint                x,
    ///                     gint                y,
    ///                     GtkSelectionData   *data,
    ///                     guint               info,
    ///                     guint               time)
    /// {
    ///   if ((data->length >= 0) && (data->format == 8))
    ///     {
    ///       GdkDragAction action;
    ///
    ///       // handle data here
    ///
    ///       action = gdk_drag_context_get_selected_action (context);
    ///       if (action == GDK_ACTION_ASK)
    ///         {
    ///           GtkWidget *dialog;
    ///           gint response;
    ///
    ///           dialog = gtk_message_dialog_new (NULL,
    ///                                            GTK_DIALOG_MODAL |
    ///                                            GTK_DIALOG_DESTROY_WITH_PARENT,
    ///                                            GTK_MESSAGE_INFO,
    ///                                            GTK_BUTTONS_YES_NO,
    ///                                            "Move the data ?\n");
    ///           response = gtk_dialog_run (GTK_DIALOG (dialog));
    ///           gtk_widget_destroy (dialog);
    ///
    ///           if (response == GTK_RESPONSE_YES)
    ///             action = GDK_ACTION_MOVE;
    ///           else
    ///             action = GDK_ACTION_COPY;
    ///          }
    ///
    ///       gtk_drag_finish (context, TRUE, action == GDK_ACTION_MOVE, time);
    ///     }
    ///   else
    ///     gtk_drag_finish (context, FALSE, FALSE, time);
    ///  }
    /// ```
    ///
    ///
    ///
    ///
    /// #### `drag-drop`
    ///  The ::drag-drop signal is emitted on the drop site when the user drops
    /// the data onto the widget. The signal handler must determine whether
    /// the cursor position is in a drop zone or not. If it is not in a drop
    /// zone, it returns [`false`] and no further processing is necessary.
    /// Otherwise, the handler returns [`true`]. In this case, the handler must
    /// ensure that `gtk_drag_finish()` is called to let the source know that
    /// the drop is done. The call to `gtk_drag_finish()` can be done either
    /// directly or in a [`drag-data-received`][struct@crate::Widget#drag-data-received] handler which gets
    /// triggered by calling [`WidgetExt::drag_get_data()`][crate::prelude::WidgetExt::drag_get_data()] to receive the data for one
    /// or more of the supported targets.
    ///
    ///
    ///
    ///
    /// #### `drag-end`
    ///  The ::drag-end signal is emitted on the drag source when a drag is
    /// finished. A typical reason to connect to this signal is to undo
    /// things done in [`drag-begin`][struct@crate::Widget#drag-begin].
    ///
    ///
    ///
    ///
    /// #### `drag-failed`
    ///  The ::drag-failed signal is emitted on the drag source when a drag has
    /// failed. The signal handler may hook custom code to handle a failed DnD
    /// operation based on the type of error, it returns [`true`] is the failure has
    /// been already handled (not showing the default "drag operation failed"
    /// animation), otherwise it returns [`false`].
    ///
    ///
    ///
    ///
    /// #### `drag-leave`
    ///  The ::drag-leave signal is emitted on the drop site when the cursor
    /// leaves the widget. A typical reason to connect to this signal is to
    /// undo things done in [`drag-motion`][struct@crate::Widget#drag-motion], e.g. undo highlighting
    /// with [`WidgetExt::drag_unhighlight()`][crate::prelude::WidgetExt::drag_unhighlight()].
    ///
    ///
    /// Likewise, the [`drag-leave`][struct@crate::Widget#drag-leave] signal is also emitted before the
    /// ::drag-drop signal, for instance to allow cleaning up of a preview item
    /// created in the [`drag-motion`][struct@crate::Widget#drag-motion] signal handler.
    ///
    ///
    ///
    ///
    /// #### `drag-motion`
    ///  The ::drag-motion signal is emitted on the drop site when the user
    /// moves the cursor over the widget during a drag. The signal handler
    /// must determine whether the cursor position is in a drop zone or not.
    /// If it is not in a drop zone, it returns [`false`] and no further processing
    /// is necessary. Otherwise, the handler returns [`true`]. In this case, the
    /// handler is responsible for providing the necessary information for
    /// displaying feedback to the user, by calling `gdk_drag_status()`.
    ///
    /// If the decision whether the drop will be accepted or rejected can't be
    /// made based solely on the cursor position and the type of the data, the
    /// handler may inspect the dragged data by calling [`WidgetExt::drag_get_data()`][crate::prelude::WidgetExt::drag_get_data()] and
    /// defer the `gdk_drag_status()` call to the [`drag-data-received`][struct@crate::Widget#drag-data-received]
    /// handler. Note that you must pass [`DestDefaults::DROP`][crate::DestDefaults::DROP],
    /// [`DestDefaults::MOTION`][crate::DestDefaults::MOTION] or [`DestDefaults::ALL`][crate::DestDefaults::ALL] to [`WidgetExtManual::drag_dest_set()`][crate::prelude::WidgetExtManual::drag_dest_set()]
    /// when using the drag-motion signal that way.
    ///
    /// Also note that there is no drag-enter signal. The drag receiver has to
    /// keep track of whether he has received any drag-motion signals since the
    /// last [`drag-leave`][struct@crate::Widget#drag-leave] and if not, treat the drag-motion signal as
    /// an "enter" signal. Upon an "enter", the handler will typically highlight
    /// the drop site with [`WidgetExt::drag_highlight()`][crate::prelude::WidgetExt::drag_highlight()].
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// static void
    /// drag_motion (GtkWidget      *widget,
    ///              GdkDragContext *context,
    ///              gint            x,
    ///              gint            y,
    ///              guint           time)
    /// {
    ///   GdkAtom target;
    ///
    ///   PrivateData *private_data = GET_PRIVATE_DATA (widget);
    ///
    ///   if (!private_data->drag_highlight)
    ///    {
    ///      private_data->drag_highlight = 1;
    ///      gtk_drag_highlight (widget);
    ///    }
    ///
    ///   target = gtk_drag_dest_find_target (widget, context, NULL);
    ///   if (target == GDK_NONE)
    ///     gdk_drag_status (context, 0, time);
    ///   else
    ///    {
    ///      private_data->pending_status
    ///         = gdk_drag_context_get_suggested_action (context);
    ///      gtk_drag_get_data (widget, context, target, time);
    ///    }
    ///
    ///   return TRUE;
    /// }
    ///
    /// static void
    /// drag_data_received (GtkWidget        *widget,
    ///                     GdkDragContext   *context,
    ///                     gint              x,
    ///                     gint              y,
    ///                     GtkSelectionData *selection_data,
    ///                     guint             info,
    ///                     guint             time)
    /// {
    ///   PrivateData *private_data = GET_PRIVATE_DATA (widget);
    ///
    ///   if (private_data->suggested_action)
    ///    {
    ///      private_data->suggested_action = 0;
    ///
    ///      // We are getting this data due to a request in drag_motion,
    ///      // rather than due to a request in drag_drop, so we are just
    ///      // supposed to call gdk_drag_status(), not actually paste in
    ///      // the data.
    ///
    ///      str = gtk_selection_data_get_text (selection_data);
    ///      if (!data_is_acceptable (str))
    ///        gdk_drag_status (context, 0, time);
    ///      else
    ///        gdk_drag_status (context,
    ///                         private_data->suggested_action,
    ///                         time);
    ///    }
    ///   else
    ///    {
    ///      // accept the drop
    ///    }
    /// }
    /// ```
    ///
    ///
    ///
    ///
    /// #### `draw`
    ///  This signal is emitted when a widget is supposed to render itself.
    /// The `widget`'s top left corner must be painted at the origin of
    /// the passed in context and be sized to the values returned by
    /// [`WidgetExt::allocated_width()`][crate::prelude::WidgetExt::allocated_width()] and
    /// [`WidgetExt::allocated_height()`][crate::prelude::WidgetExt::allocated_height()].
    ///
    /// Signal handlers connected to this signal can modify the cairo
    /// context passed as `cr` in any way they like and don't need to
    /// restore it. The signal emission takes care of calling `cairo_save()`
    /// before and `cairo_restore()` after invoking the handler.
    ///
    /// The signal handler will get a `cr` with a clip region already set to the
    /// widget's dirty region, i.e. to the area that needs repainting. Complicated
    /// widgets that want to avoid redrawing themselves completely can get the full
    /// extents of the clip region with `gdk_cairo_get_clip_rectangle()`, or they can
    /// get a finer-grained representation of the dirty region with
    /// `cairo_copy_clip_rectangle_list()`.
    ///
    ///
    ///
    ///
    /// #### `enter-notify-event`
    ///  The ::enter-notify-event will be emitted when the pointer enters
    /// the `widget`'s window.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::ENTER_NOTIFY_MASK`][crate::gdk::EventMask::ENTER_NOTIFY_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `event`
    ///  The GTK+ main loop will emit three signals for each GDK event delivered
    /// to a widget: one generic ::event signal, another, more specific,
    /// signal that matches the type of event delivered (e.g.
    /// [`key-press-event`][struct@crate::Widget#key-press-event]) and finally a generic
    /// [`event-after`][struct@crate::Widget#event-after] signal.
    ///
    ///
    ///
    ///
    /// #### `event-after`
    ///  After the emission of the [`event`][struct@crate::Widget#event] signal and (optionally)
    /// the second more specific signal, ::event-after will be emitted
    /// regardless of the previous two signals handlers return values.
    ///
    ///
    ///
    ///
    /// #### `focus`
    ///
    ///
    ///
    /// #### `focus-in-event`
    ///  The ::focus-in-event signal will be emitted when the keyboard focus
    /// enters the `widget`'s window.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::FOCUS_CHANGE_MASK`][crate::gdk::EventMask::FOCUS_CHANGE_MASK] mask.
    ///
    ///
    ///
    ///
    /// #### `focus-out-event`
    ///  The ::focus-out-event signal will be emitted when the keyboard focus
    /// leaves the `widget`'s window.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::FOCUS_CHANGE_MASK`][crate::gdk::EventMask::FOCUS_CHANGE_MASK] mask.
    ///
    ///
    ///
    ///
    /// #### `grab-broken-event`
    ///  Emitted when a pointer or keyboard grab on a window belonging
    /// to `widget` gets broken.
    ///
    /// On X11, this happens when the grab window becomes unviewable
    /// (i.e. it or one of its ancestors is unmapped), or if the same
    /// application grabs the pointer or keyboard again.
    ///
    ///
    ///
    ///
    /// #### `grab-focus`
    ///  Action
    ///
    ///
    /// #### `grab-notify`
    ///  The ::grab-notify signal is emitted when a widget becomes
    /// shadowed by a GTK+ grab (not a pointer or keyboard grab) on
    /// another widget, or when it becomes unshadowed due to a grab
    /// being removed.
    ///
    /// A widget is shadowed by a [`WidgetExt::grab_add()`][crate::prelude::WidgetExt::grab_add()] when the topmost
    /// grab widget in the grab stack of its window group is not
    /// its ancestor.
    ///
    ///
    ///
    ///
    /// #### `hide`
    ///  The ::hide signal is emitted when `widget` is hidden, for example with
    /// [`WidgetExt::hide()`][crate::prelude::WidgetExt::hide()].
    ///
    ///
    ///
    ///
    /// #### `hierarchy-changed`
    ///  The ::hierarchy-changed signal is emitted when the
    /// anchored state of a widget changes. A widget is
    /// “anchored” when its toplevel
    /// ancestor is a [`Window`][crate::Window]. This signal is emitted when
    /// a widget changes from un-anchored to anchored or vice-versa.
    ///
    ///
    ///
    ///
    /// #### `key-press-event`
    ///  The ::key-press-event signal is emitted when a key is pressed. The signal
    /// emission will reoccur at the key-repeat rate when the key is kept pressed.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::KEY_PRESS_MASK`][crate::gdk::EventMask::KEY_PRESS_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `key-release-event`
    ///  The ::key-release-event signal is emitted when a key is released.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::KEY_RELEASE_MASK`][crate::gdk::EventMask::KEY_RELEASE_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `keynav-failed`
    ///  Gets emitted if keyboard navigation fails.
    /// See [`WidgetExt::keynav_failed()`][crate::prelude::WidgetExt::keynav_failed()] for details.
    ///
    ///
    ///
    ///
    /// #### `leave-notify-event`
    ///  The ::leave-notify-event will be emitted when the pointer leaves
    /// the `widget`'s window.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::LEAVE_NOTIFY_MASK`][crate::gdk::EventMask::LEAVE_NOTIFY_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `map`
    ///  The ::map signal is emitted when `widget` is going to be mapped, that is
    /// when the widget is visible (which is controlled with
    /// [`WidgetExt::set_visible()`][crate::prelude::WidgetExt::set_visible()]) and all its parents up to the toplevel widget
    /// are also visible. Once the map has occurred, [`map-event`][struct@crate::Widget#map-event] will
    /// be emitted.
    ///
    /// The ::map signal can be used to determine whether a widget will be drawn,
    /// for instance it can resume an animation that was stopped during the
    /// emission of [`unmap`][struct@crate::Widget#unmap].
    ///
    ///
    ///
    ///
    /// #### `map-event`
    ///  The ::map-event signal will be emitted when the `widget`'s window is
    /// mapped. A window is mapped when it becomes visible on the screen.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `mnemonic-activate`
    ///  The default handler for this signal activates `widget` if `group_cycling`
    /// is [`false`], or just makes `widget` grab focus if `group_cycling` is [`true`].
    ///
    ///
    ///
    ///
    /// #### `motion-notify-event`
    ///  The ::motion-notify-event signal is emitted when the pointer moves
    /// over the widget's [`gdk::Window`][crate::gdk::Window].
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget
    /// needs to enable the [`gdk::EventMask::POINTER_MOTION_MASK`][crate::gdk::EventMask::POINTER_MOTION_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `move-focus`
    ///  Action
    ///
    ///
    /// #### `parent-set`
    ///  The ::parent-set signal is emitted when a new parent
    /// has been set on a widget.
    ///
    ///
    ///
    ///
    /// #### `popup-menu`
    ///  This signal gets emitted whenever a widget should pop up a context
    /// menu. This usually happens through the standard key binding mechanism;
    /// by pressing a certain key while a widget is focused, the user can cause
    /// the widget to pop up a menu. For example, the [`Entry`][crate::Entry] widget creates
    /// a menu with clipboard commands. See the
    /// [Popup Menu Migration Checklist][checklist-popup-menu]
    /// for an example of how to use this signal.
    ///
    /// Action
    ///
    ///
    /// #### `property-notify-event`
    ///  The ::property-notify-event signal will be emitted when a property on
    /// the `widget`'s window has been changed or deleted.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::PROPERTY_CHANGE_MASK`][crate::gdk::EventMask::PROPERTY_CHANGE_MASK] mask.
    ///
    ///
    ///
    ///
    /// #### `proximity-in-event`
    ///  To receive this signal the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::PROXIMITY_IN_MASK`][crate::gdk::EventMask::PROXIMITY_IN_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `proximity-out-event`
    ///  To receive this signal the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::PROXIMITY_OUT_MASK`][crate::gdk::EventMask::PROXIMITY_OUT_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `query-tooltip`
    ///  Emitted when [`has-tooltip`][struct@crate::Widget#has-tooltip] is [`true`] and the hover timeout
    /// has expired with the cursor hovering "above" `widget`; or emitted when `widget` got
    /// focus in keyboard mode.
    ///
    /// Using the given coordinates, the signal handler should determine
    /// whether a tooltip should be shown for `widget`. If this is the case
    /// [`true`] should be returned, [`false`] otherwise. Note that if
    /// `keyboard_mode` is [`true`], the values of `x` and `y` are undefined and
    /// should not be used.
    ///
    /// The signal handler is free to manipulate `tooltip` with the therefore
    /// destined function calls.
    ///
    ///
    ///
    ///
    /// #### `realize`
    ///  The ::realize signal is emitted when `widget` is associated with a
    /// [`gdk::Window`][crate::gdk::Window], which means that [`WidgetExt::realize()`][crate::prelude::WidgetExt::realize()] has been called or the
    /// widget has been mapped (that is, it is going to be drawn).
    ///
    ///
    ///
    ///
    /// #### `screen-changed`
    ///  The ::screen-changed signal gets emitted when the
    /// screen of a widget has changed.
    ///
    ///
    ///
    ///
    /// #### `scroll-event`
    ///  The ::scroll-event signal is emitted when a button in the 4 to 7
    /// range is pressed. Wheel mice are usually configured to generate
    /// button press events for buttons 4 and 5 when the wheel is turned.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::SCROLL_MASK`][crate::gdk::EventMask::SCROLL_MASK] mask.
    ///
    /// This signal will be sent to the grab widget if there is one.
    ///
    ///
    ///
    ///
    /// #### `selection-clear-event`
    ///  The ::selection-clear-event signal will be emitted when the
    /// the `widget`'s window has lost ownership of a selection.
    ///
    ///
    ///
    ///
    /// #### `selection-get`
    ///
    ///
    ///
    /// #### `selection-notify-event`
    ///
    ///
    ///
    /// #### `selection-received`
    ///
    ///
    ///
    /// #### `selection-request-event`
    ///  The ::selection-request-event signal will be emitted when
    /// another client requests ownership of the selection owned by
    /// the `widget`'s window.
    ///
    ///
    ///
    ///
    /// #### `show`
    ///  The ::show signal is emitted when `widget` is shown, for example with
    /// [`WidgetExt::show()`][crate::prelude::WidgetExt::show()].
    ///
    ///
    ///
    ///
    /// #### `show-help`
    ///  Action
    ///
    ///
    /// #### `size-allocate`
    ///
    ///
    ///
    /// #### `state-changed`
    ///  The ::state-changed signal is emitted when the widget state changes.
    /// See `gtk_widget_get_state()`.
    ///
    ///
    ///
    ///
    /// #### `state-flags-changed`
    ///  The ::state-flags-changed signal is emitted when the widget state
    /// changes, see [`WidgetExt::state_flags()`][crate::prelude::WidgetExt::state_flags()].
    ///
    ///
    ///
    ///
    /// #### `style-set`
    ///  The ::style-set signal is emitted when a new style has been set
    /// on a widget. Note that style-modifying functions like
    /// `gtk_widget_modify_base()` also cause this signal to be emitted.
    ///
    /// Note that this signal is emitted for changes to the deprecated
    /// `GtkStyle`. To track changes to the [`StyleContext`][crate::StyleContext] associated
    /// with a widget, use the [`style-updated`][struct@crate::Widget#style-updated] signal.
    ///
    ///
    ///
    ///
    /// #### `style-updated`
    ///  The ::style-updated signal is a convenience signal that is emitted when the
    /// [`changed`][struct@crate::StyleContext#changed] signal is emitted on the `widget`'s associated
    /// [`StyleContext`][crate::StyleContext] as returned by [`WidgetExt::style_context()`][crate::prelude::WidgetExt::style_context()].
    ///
    /// Note that style-modifying functions like `gtk_widget_override_color()` also
    /// cause this signal to be emitted.
    ///
    ///
    ///
    ///
    /// #### `touch-event`
    ///
    ///
    ///
    /// #### `unmap`
    ///  The ::unmap signal is emitted when `widget` is going to be unmapped, which
    /// means that either it or any of its parents up to the toplevel widget have
    /// been set as hidden.
    ///
    /// As ::unmap indicates that a widget will not be shown any longer, it can be
    /// used to, for example, stop an animation on the widget.
    ///
    ///
    ///
    ///
    /// #### `unmap-event`
    ///  The ::unmap-event signal will be emitted when the `widget`'s window is
    /// unmapped. A window is unmapped when it becomes invisible on the screen.
    ///
    /// To receive this signal, the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable this mask
    /// automatically for all new windows.
    ///
    ///
    ///
    ///
    /// #### `unrealize`
    ///  The ::unrealize signal is emitted when the [`gdk::Window`][crate::gdk::Window] associated with
    /// `widget` is destroyed, which means that [`WidgetExt::unrealize()`][crate::prelude::WidgetExt::unrealize()] has been
    /// called or the widget has been unmapped (that is, it is going to be
    /// hidden).
    ///
    ///
    ///
    ///
    /// #### `visibility-notify-event`
    ///  The ::visibility-notify-event will be emitted when the `widget`'s
    /// window is obscured or unobscured.
    ///
    /// To receive this signal the [`gdk::Window`][crate::gdk::Window] associated to the widget needs
    /// to enable the [`gdk::EventMask::VISIBILITY_NOTIFY_MASK`][crate::gdk::EventMask::VISIBILITY_NOTIFY_MASK] mask.
    ///
    ///
    ///
    ///
    /// #### `window-state-event`
    ///  The ::window-state-event will be emitted when the state of the
    /// toplevel window associated to the `widget` changes.
    ///
    /// To receive this signal the [`gdk::Window`][crate::gdk::Window] associated to the widget
    /// needs to enable the [`gdk::EventMask::STRUCTURE_MASK`][crate::gdk::EventMask::STRUCTURE_MASK] mask. GDK will enable
    /// this mask automatically for all new windows.
    ///
    ///
    /// </details>
    ///
    /// # Implements
    ///
    /// [`ScrolledWindowExt`][trait@crate::prelude::ScrolledWindowExt], [`BinExt`][trait@crate::prelude::BinExt], [`ContainerExt`][trait@crate::prelude::ContainerExt], [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`ContainerExtManual`][trait@crate::prelude::ContainerExtManual], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`BuildableExtManual`][trait@crate::prelude::BuildableExtManual]
    #[doc(alias = "GtkScrolledWindow")]
    pub struct ScrolledWindow(Object<ffi::GtkScrolledWindow, ffi::GtkScrolledWindowClass>) @extends Bin, Container, Widget, @implements Buildable;

    match fn {
        type_ => || ffi::gtk_scrolled_window_get_type(),
    }
}

impl ScrolledWindow {
    pub const NONE: Option<&'static ScrolledWindow> = None;

    /// Creates a new scrolled window.
    ///
    /// The two arguments are the scrolled window’s adjustments; these will be
    /// shared with the scrollbars and the child widget to keep the bars in sync
    /// with the child. Usually you want to pass [`None`] for the adjustments, which
    /// will cause the scrolled window to create them for you.
    /// ## `hadjustment`
    /// horizontal adjustment
    /// ## `vadjustment`
    /// vertical adjustment
    ///
    /// # Returns
    ///
    /// a new scrolled window
    #[doc(alias = "gtk_scrolled_window_new")]
    pub fn new(
        hadjustment: Option<&impl IsA<Adjustment>>,
        vadjustment: Option<&impl IsA<Adjustment>>,
    ) -> ScrolledWindow {
        assert_initialized_main_thread!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_scrolled_window_new(
                hadjustment.map(|p| p.as_ref()).to_glib_none().0,
                vadjustment.map(|p| p.as_ref()).to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

    // rustdoc-stripper-ignore-next
    /// Creates a new builder-pattern struct instance to construct [`ScrolledWindow`] objects.
    ///
    /// This method returns an instance of [`ScrolledWindowBuilder`](crate::builders::ScrolledWindowBuilder) which can be used to create [`ScrolledWindow`] objects.
    pub fn builder() -> ScrolledWindowBuilder {
        ScrolledWindowBuilder::new()
    }
}

impl Default for ScrolledWindow {
    fn default() -> Self {
        glib::object::Object::new::<Self>()
    }
}

// rustdoc-stripper-ignore-next
/// A [builder-pattern] type to construct [`ScrolledWindow`] objects.
///
/// [builder-pattern]: https://doc.rust-lang.org/1.0.0/style/ownership/builders.html
#[must_use = "The builder must be built to be used"]
pub struct ScrolledWindowBuilder {
    builder: glib::object::ObjectBuilder<'static, ScrolledWindow>,
}

impl ScrolledWindowBuilder {
    fn new() -> Self {
        Self {
            builder: glib::object::Object::builder(),
        }
    }

    pub fn hadjustment(self, hadjustment: &impl IsA<Adjustment>) -> Self {
        Self {
            builder: self
                .builder
                .property("hadjustment", hadjustment.clone().upcast()),
        }
    }

    pub fn hscrollbar_policy(self, hscrollbar_policy: PolicyType) -> Self {
        Self {
            builder: self
                .builder
                .property("hscrollbar-policy", hscrollbar_policy),
        }
    }

    /// Whether kinetic scrolling is enabled or not. Kinetic scrolling
    /// only applies to devices with source `GDK_SOURCE_TOUCHSCREEN`.
    pub fn kinetic_scrolling(self, kinetic_scrolling: bool) -> Self {
        Self {
            builder: self
                .builder
                .property("kinetic-scrolling", kinetic_scrolling),
        }
    }

    /// The maximum content height of `scrolled_window`, or -1 if not set.
    pub fn max_content_height(self, max_content_height: i32) -> Self {
        Self {
            builder: self
                .builder
                .property("max-content-height", max_content_height),
        }
    }

    /// The maximum content width of `scrolled_window`, or -1 if not set.
    pub fn max_content_width(self, max_content_width: i32) -> Self {
        Self {
            builder: self
                .builder
                .property("max-content-width", max_content_width),
        }
    }

    /// The minimum content height of `scrolled_window`, or -1 if not set.
    pub fn min_content_height(self, min_content_height: i32) -> Self {
        Self {
            builder: self
                .builder
                .property("min-content-height", min_content_height),
        }
    }

    /// The minimum content width of `scrolled_window`, or -1 if not set.
    pub fn min_content_width(self, min_content_width: i32) -> Self {
        Self {
            builder: self
                .builder
                .property("min-content-width", min_content_width),
        }
    }

    /// Whether overlay scrolling is enabled or not. If it is, the
    /// scrollbars are only added as traditional widgets when a mouse
    /// is present. Otherwise, they are overlayed on top of the content,
    /// as narrow indicators.
    ///
    /// Note that overlay scrolling can also be globally disabled, with
    /// the [`gtk-overlay-scrolling`][struct@crate::Settings#gtk-overlay-scrolling] setting.
    pub fn overlay_scrolling(self, overlay_scrolling: bool) -> Self {
        Self {
            builder: self
                .builder
                .property("overlay-scrolling", overlay_scrolling),
        }
    }

    /// Whether the natural height of the child should be calculated and propagated
    /// through the scrolled window’s requested natural height.
    ///
    /// This is useful in cases where an attempt should be made to allocate exactly
    /// enough space for the natural size of the child.
    pub fn propagate_natural_height(self, propagate_natural_height: bool) -> Self {
        Self {
            builder: self
                .builder
                .property("propagate-natural-height", propagate_natural_height),
        }
    }

    /// Whether the natural width of the child should be calculated and propagated
    /// through the scrolled window’s requested natural width.
    ///
    /// This is useful in cases where an attempt should be made to allocate exactly
    /// enough space for the natural size of the child.
    pub fn propagate_natural_width(self, propagate_natural_width: bool) -> Self {
        Self {
            builder: self
                .builder
                .property("propagate-natural-width", propagate_natural_width),
        }
    }

    pub fn shadow_type(self, shadow_type: ShadowType) -> Self {
        Self {
            builder: self.builder.property("shadow-type", shadow_type),
        }
    }

    pub fn vadjustment(self, vadjustment: &impl IsA<Adjustment>) -> Self {
        Self {
            builder: self
                .builder
                .property("vadjustment", vadjustment.clone().upcast()),
        }
    }

    pub fn vscrollbar_policy(self, vscrollbar_policy: PolicyType) -> Self {
        Self {
            builder: self
                .builder
                .property("vscrollbar-policy", vscrollbar_policy),
        }
    }

    pub fn window_placement(self, window_placement: CornerType) -> Self {
        Self {
            builder: self.builder.property("window-placement", window_placement),
        }
    }

    pub fn border_width(self, border_width: u32) -> Self {
        Self {
            builder: self.builder.property("border-width", border_width),
        }
    }

    pub fn child(self, child: &impl IsA<Widget>) -> Self {
        Self {
            builder: self.builder.property("child", child.clone().upcast()),
        }
    }

    pub fn resize_mode(self, resize_mode: ResizeMode) -> Self {
        Self {
            builder: self.builder.property("resize-mode", resize_mode),
        }
    }

    pub fn app_paintable(self, app_paintable: bool) -> Self {
        Self {
            builder: self.builder.property("app-paintable", app_paintable),
        }
    }

    pub fn can_default(self, can_default: bool) -> Self {
        Self {
            builder: self.builder.property("can-default", can_default),
        }
    }

    pub fn can_focus(self, can_focus: bool) -> Self {
        Self {
            builder: self.builder.property("can-focus", can_focus),
        }
    }

    pub fn events(self, events: gdk::EventMask) -> Self {
        Self {
            builder: self.builder.property("events", events),
        }
    }

    /// Whether to expand in both directions. Setting this sets both [`hexpand`][struct@crate::Widget#hexpand] and [`vexpand`][struct@crate::Widget#vexpand]
    pub fn expand(self, expand: bool) -> Self {
        Self {
            builder: self.builder.property("expand", expand),
        }
    }

    /// Whether the widget should grab focus when it is clicked with the mouse.
    ///
    /// This property is only relevant for widgets that can take focus.
    ///
    /// Before 3.20, several widgets (GtkButton, GtkFileChooserButton,
    /// GtkComboBox) implemented this property individually.
    pub fn focus_on_click(self, focus_on_click: bool) -> Self {
        Self {
            builder: self.builder.property("focus-on-click", focus_on_click),
        }
    }

    /// How to distribute horizontal space if widget gets extra space, see [`Align`][crate::Align]
    pub fn halign(self, halign: Align) -> Self {
        Self {
            builder: self.builder.property("halign", halign),
        }
    }

    pub fn has_default(self, has_default: bool) -> Self {
        Self {
            builder: self.builder.property("has-default", has_default),
        }
    }

    pub fn has_focus(self, has_focus: bool) -> Self {
        Self {
            builder: self.builder.property("has-focus", has_focus),
        }
    }

    /// Enables or disables the emission of [`query-tooltip`][struct@crate::Widget#query-tooltip] on `widget`.
    /// A value of [`true`] indicates that `widget` can have a tooltip, in this case
    /// the widget will be queried using [`query-tooltip`][struct@crate::Widget#query-tooltip] to determine
    /// whether it will provide a tooltip or not.
    ///
    /// Note that setting this property to [`true`] for the first time will change
    /// the event masks of the GdkWindows of this widget to include leave-notify
    /// and motion-notify events. This cannot and will not be undone when the
    /// property is set to [`false`] again.
    pub fn has_tooltip(self, has_tooltip: bool) -> Self {
        Self {
            builder: self.builder.property("has-tooltip", has_tooltip),
        }
    }

    pub fn height_request(self, height_request: i32) -> Self {
        Self {
            builder: self.builder.property("height-request", height_request),
        }
    }

    /// Whether to expand horizontally. See [`WidgetExt::set_hexpand()`][crate::prelude::WidgetExt::set_hexpand()].
    pub fn hexpand(self, hexpand: bool) -> Self {
        Self {
            builder: self.builder.property("hexpand", hexpand),
        }
    }

    /// Whether to use the [`hexpand`][struct@crate::Widget#hexpand] property. See [`WidgetExt::is_hexpand_set()`][crate::prelude::WidgetExt::is_hexpand_set()].
    pub fn hexpand_set(self, hexpand_set: bool) -> Self {
        Self {
            builder: self.builder.property("hexpand-set", hexpand_set),
        }
    }

    pub fn is_focus(self, is_focus: bool) -> Self {
        Self {
            builder: self.builder.property("is-focus", is_focus),
        }
    }

    /// Sets all four sides' margin at once. If read, returns max
    /// margin on any side.
    pub fn margin(self, margin: i32) -> Self {
        Self {
            builder: self.builder.property("margin", margin),
        }
    }

    /// Margin on bottom side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    pub fn margin_bottom(self, margin_bottom: i32) -> Self {
        Self {
            builder: self.builder.property("margin-bottom", margin_bottom),
        }
    }

    /// Margin on end of widget, horizontally. This property supports
    /// left-to-right and right-to-left text directions.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    pub fn margin_end(self, margin_end: i32) -> Self {
        Self {
            builder: self.builder.property("margin-end", margin_end),
        }
    }

    /// Margin on start of widget, horizontally. This property supports
    /// left-to-right and right-to-left text directions.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    pub fn margin_start(self, margin_start: i32) -> Self {
        Self {
            builder: self.builder.property("margin-start", margin_start),
        }
    }

    /// Margin on top side of widget.
    ///
    /// This property adds margin outside of the widget's normal size
    /// request, the margin will be added in addition to the size from
    /// [`WidgetExt::set_size_request()`][crate::prelude::WidgetExt::set_size_request()] for example.
    pub fn margin_top(self, margin_top: i32) -> Self {
        Self {
            builder: self.builder.property("margin-top", margin_top),
        }
    }

    pub fn name(self, name: impl Into<glib::GString>) -> Self {
        Self {
            builder: self.builder.property("name", name.into()),
        }
    }

    pub fn no_show_all(self, no_show_all: bool) -> Self {
        Self {
            builder: self.builder.property("no-show-all", no_show_all),
        }
    }

    /// The requested opacity of the widget. See [`WidgetExt::set_opacity()`][crate::prelude::WidgetExt::set_opacity()] for
    /// more details about window opacity.
    ///
    /// Before 3.8 this was only available in GtkWindow
    pub fn opacity(self, opacity: f64) -> Self {
        Self {
            builder: self.builder.property("opacity", opacity),
        }
    }

    pub fn parent(self, parent: &impl IsA<Container>) -> Self {
        Self {
            builder: self.builder.property("parent", parent.clone().upcast()),
        }
    }

    pub fn receives_default(self, receives_default: bool) -> Self {
        Self {
            builder: self.builder.property("receives-default", receives_default),
        }
    }

    pub fn sensitive(self, sensitive: bool) -> Self {
        Self {
            builder: self.builder.property("sensitive", sensitive),
        }
    }

    /// Sets the text of tooltip to be the given string, which is marked up
    /// with the [Pango text markup language][PangoMarkupFormat].
    /// Also see [`Tooltip::set_markup()`][crate::Tooltip::set_markup()].
    ///
    /// This is a convenience property which will take care of getting the
    /// tooltip shown if the given string is not [`None`]: [`has-tooltip`][struct@crate::Widget#has-tooltip]
    /// will automatically be set to [`true`] and there will be taken care of
    /// [`query-tooltip`][struct@crate::Widget#query-tooltip] in the default signal handler.
    ///
    /// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and [`tooltip-markup`][struct@crate::Widget#tooltip-markup]
    /// are set, the last one wins.
    pub fn tooltip_markup(self, tooltip_markup: impl Into<glib::GString>) -> Self {
        Self {
            builder: self
                .builder
                .property("tooltip-markup", tooltip_markup.into()),
        }
    }

    /// Sets the text of tooltip to be the given string.
    ///
    /// Also see [`Tooltip::set_text()`][crate::Tooltip::set_text()].
    ///
    /// This is a convenience property which will take care of getting the
    /// tooltip shown if the given string is not [`None`]: [`has-tooltip`][struct@crate::Widget#has-tooltip]
    /// will automatically be set to [`true`] and there will be taken care of
    /// [`query-tooltip`][struct@crate::Widget#query-tooltip] in the default signal handler.
    ///
    /// Note that if both [`tooltip-text`][struct@crate::Widget#tooltip-text] and [`tooltip-markup`][struct@crate::Widget#tooltip-markup]
    /// are set, the last one wins.
    pub fn tooltip_text(self, tooltip_text: impl Into<glib::GString>) -> Self {
        Self {
            builder: self.builder.property("tooltip-text", tooltip_text.into()),
        }
    }

    /// How to distribute vertical space if widget gets extra space, see [`Align`][crate::Align]
    pub fn valign(self, valign: Align) -> Self {
        Self {
            builder: self.builder.property("valign", valign),
        }
    }

    /// Whether to expand vertically. See [`WidgetExt::set_vexpand()`][crate::prelude::WidgetExt::set_vexpand()].
    pub fn vexpand(self, vexpand: bool) -> Self {
        Self {
            builder: self.builder.property("vexpand", vexpand),
        }
    }

    /// Whether to use the [`vexpand`][struct@crate::Widget#vexpand] property. See [`WidgetExt::is_vexpand_set()`][crate::prelude::WidgetExt::is_vexpand_set()].
    pub fn vexpand_set(self, vexpand_set: bool) -> Self {
        Self {
            builder: self.builder.property("vexpand-set", vexpand_set),
        }
    }

    pub fn visible(self, visible: bool) -> Self {
        Self {
            builder: self.builder.property("visible", visible),
        }
    }

    pub fn width_request(self, width_request: i32) -> Self {
        Self {
            builder: self.builder.property("width-request", width_request),
        }
    }

    // rustdoc-stripper-ignore-next
    /// Build the [`ScrolledWindow`].
    #[must_use = "Building the object from the builder is usually expensive and is not expected to have side effects"]
    pub fn build(self) -> ScrolledWindow {
        assert_initialized_main_thread!();
        self.builder.build()
    }
}

/// Trait containing all [`struct@ScrolledWindow`] methods.
///
/// # Implementors
///
/// [`PlacesSidebar`][struct@crate::PlacesSidebar], [`ScrolledWindow`][struct@crate::ScrolledWindow]
pub trait ScrolledWindowExt: IsA<ScrolledWindow> + 'static {
    /// Return whether button presses are captured during kinetic
    /// scrolling. See [`set_capture_button_press()`][Self::set_capture_button_press()].
    ///
    /// # Returns
    ///
    /// [`true`] if button presses are captured during kinetic scrolling
    #[doc(alias = "gtk_scrolled_window_get_capture_button_press")]
    #[doc(alias = "get_capture_button_press")]
    fn is_capture_button_press(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_scrolled_window_get_capture_button_press(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the horizontal scrollbar’s adjustment, used to connect the
    /// horizontal scrollbar to the child widget’s horizontal scroll
    /// functionality.
    ///
    /// # Returns
    ///
    /// the horizontal [`Adjustment`][crate::Adjustment]
    #[doc(alias = "gtk_scrolled_window_get_hadjustment")]
    #[doc(alias = "get_hadjustment")]
    fn hadjustment(&self) -> Adjustment {
        unsafe {
            from_glib_none(ffi::gtk_scrolled_window_get_hadjustment(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the horizontal scrollbar of `self`.
    ///
    /// # Returns
    ///
    /// the horizontal scrollbar of the scrolled window.
    #[doc(alias = "gtk_scrolled_window_get_hscrollbar")]
    #[doc(alias = "get_hscrollbar")]
    fn hscrollbar(&self) -> Option<Widget> {
        unsafe {
            from_glib_none(ffi::gtk_scrolled_window_get_hscrollbar(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the specified kinetic scrolling behavior.
    ///
    /// # Returns
    ///
    /// the scrolling behavior flags.
    #[doc(alias = "gtk_scrolled_window_get_kinetic_scrolling")]
    #[doc(alias = "get_kinetic_scrolling")]
    #[doc(alias = "kinetic-scrolling")]
    fn is_kinetic_scrolling(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_scrolled_window_get_kinetic_scrolling(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the maximum content height set.
    ///
    /// # Returns
    ///
    /// the maximum content height, or -1
    #[doc(alias = "gtk_scrolled_window_get_max_content_height")]
    #[doc(alias = "get_max_content_height")]
    #[doc(alias = "max-content-height")]
    fn max_content_height(&self) -> i32 {
        unsafe { ffi::gtk_scrolled_window_get_max_content_height(self.as_ref().to_glib_none().0) }
    }

    /// Returns the maximum content width set.
    ///
    /// # Returns
    ///
    /// the maximum content width, or -1
    #[doc(alias = "gtk_scrolled_window_get_max_content_width")]
    #[doc(alias = "get_max_content_width")]
    #[doc(alias = "max-content-width")]
    fn max_content_width(&self) -> i32 {
        unsafe { ffi::gtk_scrolled_window_get_max_content_width(self.as_ref().to_glib_none().0) }
    }

    /// Gets the minimal content height of `self`, or -1 if not set.
    ///
    /// # Returns
    ///
    /// the minimal content height
    #[doc(alias = "gtk_scrolled_window_get_min_content_height")]
    #[doc(alias = "get_min_content_height")]
    #[doc(alias = "min-content-height")]
    fn min_content_height(&self) -> i32 {
        unsafe { ffi::gtk_scrolled_window_get_min_content_height(self.as_ref().to_glib_none().0) }
    }

    /// Gets the minimum content width of `self`, or -1 if not set.
    ///
    /// # Returns
    ///
    /// the minimum content width
    #[doc(alias = "gtk_scrolled_window_get_min_content_width")]
    #[doc(alias = "get_min_content_width")]
    #[doc(alias = "min-content-width")]
    fn min_content_width(&self) -> i32 {
        unsafe { ffi::gtk_scrolled_window_get_min_content_width(self.as_ref().to_glib_none().0) }
    }

    /// Returns whether overlay scrolling is enabled for this scrolled window.
    ///
    /// # Returns
    ///
    /// [`true`] if overlay scrolling is enabled
    #[doc(alias = "gtk_scrolled_window_get_overlay_scrolling")]
    #[doc(alias = "get_overlay_scrolling")]
    #[doc(alias = "overlay-scrolling")]
    fn is_overlay_scrolling(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_scrolled_window_get_overlay_scrolling(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the placement of the contents with respect to the scrollbars
    /// for the scrolled window. See [`set_placement()`][Self::set_placement()].
    ///
    /// # Returns
    ///
    /// the current placement value.
    ///
    /// See also [`set_placement()`][Self::set_placement()] and
    /// [`unset_placement()`][Self::unset_placement()].
    #[doc(alias = "gtk_scrolled_window_get_placement")]
    #[doc(alias = "get_placement")]
    fn placement(&self) -> CornerType {
        unsafe {
            from_glib(ffi::gtk_scrolled_window_get_placement(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Retrieves the current policy values for the horizontal and vertical
    /// scrollbars. See [`set_policy()`][Self::set_policy()].
    ///
    /// # Returns
    ///
    ///
    /// ## `hscrollbar_policy`
    /// location to store the policy
    ///  for the horizontal scrollbar, or [`None`]
    ///
    /// ## `vscrollbar_policy`
    /// location to store the policy
    ///  for the vertical scrollbar, or [`None`]
    #[doc(alias = "gtk_scrolled_window_get_policy")]
    #[doc(alias = "get_policy")]
    fn policy(&self) -> (PolicyType, PolicyType) {
        unsafe {
            let mut hscrollbar_policy = std::mem::MaybeUninit::uninit();
            let mut vscrollbar_policy = std::mem::MaybeUninit::uninit();
            ffi::gtk_scrolled_window_get_policy(
                self.as_ref().to_glib_none().0,
                hscrollbar_policy.as_mut_ptr(),
                vscrollbar_policy.as_mut_ptr(),
            );
            (
                from_glib(hscrollbar_policy.assume_init()),
                from_glib(vscrollbar_policy.assume_init()),
            )
        }
    }

    /// Reports whether the natural height of the child will be calculated and propagated
    /// through the scrolled window’s requested natural height.
    ///
    /// # Returns
    ///
    /// whether natural height propagation is enabled.
    #[doc(alias = "gtk_scrolled_window_get_propagate_natural_height")]
    #[doc(alias = "get_propagate_natural_height")]
    #[doc(alias = "propagate-natural-height")]
    fn propagates_natural_height(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_scrolled_window_get_propagate_natural_height(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Reports whether the natural width of the child will be calculated and propagated
    /// through the scrolled window’s requested natural width.
    ///
    /// # Returns
    ///
    /// whether natural width propagation is enabled.
    #[doc(alias = "gtk_scrolled_window_get_propagate_natural_width")]
    #[doc(alias = "get_propagate_natural_width")]
    #[doc(alias = "propagate-natural-width")]
    fn propagates_natural_width(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_scrolled_window_get_propagate_natural_width(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the shadow type of the scrolled window. See
    /// [`set_shadow_type()`][Self::set_shadow_type()].
    ///
    /// # Returns
    ///
    /// the current shadow type
    #[doc(alias = "gtk_scrolled_window_get_shadow_type")]
    #[doc(alias = "get_shadow_type")]
    #[doc(alias = "shadow-type")]
    fn shadow_type(&self) -> ShadowType {
        unsafe {
            from_glib(ffi::gtk_scrolled_window_get_shadow_type(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the vertical scrollbar’s adjustment, used to connect the
    /// vertical scrollbar to the child widget’s vertical scroll functionality.
    ///
    /// # Returns
    ///
    /// the vertical [`Adjustment`][crate::Adjustment]
    #[doc(alias = "gtk_scrolled_window_get_vadjustment")]
    #[doc(alias = "get_vadjustment")]
    fn vadjustment(&self) -> Adjustment {
        unsafe {
            from_glib_none(ffi::gtk_scrolled_window_get_vadjustment(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the vertical scrollbar of `self`.
    ///
    /// # Returns
    ///
    /// the vertical scrollbar of the scrolled window.
    #[doc(alias = "gtk_scrolled_window_get_vscrollbar")]
    #[doc(alias = "get_vscrollbar")]
    fn vscrollbar(&self) -> Option<Widget> {
        unsafe {
            from_glib_none(ffi::gtk_scrolled_window_get_vscrollbar(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Changes the behaviour of `self` with regard to the initial
    /// event that possibly starts kinetic scrolling. When `capture_button_press`
    /// is set to [`true`], the event is captured by the scrolled window, and
    /// then later replayed if it is meant to go to the child widget.
    ///
    /// This should be enabled if any child widgets perform non-reversible
    /// actions on [`button-press-event`][struct@crate::Widget#button-press-event]. If they don't, and handle
    /// additionally handle [`grab-broken-event`][struct@crate::Widget#grab-broken-event], it might be better
    /// to set `capture_button_press` to [`false`].
    ///
    /// This setting only has an effect if kinetic scrolling is enabled.
    /// ## `capture_button_press`
    /// [`true`] to capture button presses
    #[doc(alias = "gtk_scrolled_window_set_capture_button_press")]
    fn set_capture_button_press(&self, capture_button_press: bool) {
        unsafe {
            ffi::gtk_scrolled_window_set_capture_button_press(
                self.as_ref().to_glib_none().0,
                capture_button_press.into_glib(),
            );
        }
    }

    /// Sets the [`Adjustment`][crate::Adjustment] for the horizontal scrollbar.
    /// ## `hadjustment`
    /// the [`Adjustment`][crate::Adjustment] to use, or [`None`] to create a new one
    #[doc(alias = "gtk_scrolled_window_set_hadjustment")]
    #[doc(alias = "hadjustment")]
    fn set_hadjustment(&self, hadjustment: Option<&impl IsA<Adjustment>>) {
        unsafe {
            ffi::gtk_scrolled_window_set_hadjustment(
                self.as_ref().to_glib_none().0,
                hadjustment.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    /// Turns kinetic scrolling on or off.
    /// Kinetic scrolling only applies to devices with source
    /// `GDK_SOURCE_TOUCHSCREEN`.
    /// ## `kinetic_scrolling`
    /// [`true`] to enable kinetic scrolling
    #[doc(alias = "gtk_scrolled_window_set_kinetic_scrolling")]
    #[doc(alias = "kinetic-scrolling")]
    fn set_kinetic_scrolling(&self, kinetic_scrolling: bool) {
        unsafe {
            ffi::gtk_scrolled_window_set_kinetic_scrolling(
                self.as_ref().to_glib_none().0,
                kinetic_scrolling.into_glib(),
            );
        }
    }

    /// Sets the maximum height that `self` should keep visible. The
    /// `self` will grow up to this height before it starts scrolling
    /// the content.
    ///
    /// It is a programming error to set the maximum content height to a value
    /// smaller than [`min-content-height`][struct@crate::ScrolledWindow#min-content-height].
    /// ## `height`
    /// the maximum content height
    #[doc(alias = "gtk_scrolled_window_set_max_content_height")]
    #[doc(alias = "max-content-height")]
    fn set_max_content_height(&self, height: i32) {
        unsafe {
            ffi::gtk_scrolled_window_set_max_content_height(self.as_ref().to_glib_none().0, height);
        }
    }

    /// Sets the maximum width that `self` should keep visible. The
    /// `self` will grow up to this width before it starts scrolling
    /// the content.
    ///
    /// It is a programming error to set the maximum content width to a value
    /// smaller than [`min-content-width`][struct@crate::ScrolledWindow#min-content-width].
    /// ## `width`
    /// the maximum content width
    #[doc(alias = "gtk_scrolled_window_set_max_content_width")]
    #[doc(alias = "max-content-width")]
    fn set_max_content_width(&self, width: i32) {
        unsafe {
            ffi::gtk_scrolled_window_set_max_content_width(self.as_ref().to_glib_none().0, width);
        }
    }

    /// Sets the minimum height that `self` should keep visible.
    /// Note that this can and (usually will) be smaller than the minimum
    /// size of the content.
    ///
    /// It is a programming error to set the minimum content height to a
    /// value greater than [`max-content-height`][struct@crate::ScrolledWindow#max-content-height].
    /// ## `height`
    /// the minimal content height
    #[doc(alias = "gtk_scrolled_window_set_min_content_height")]
    #[doc(alias = "min-content-height")]
    fn set_min_content_height(&self, height: i32) {
        unsafe {
            ffi::gtk_scrolled_window_set_min_content_height(self.as_ref().to_glib_none().0, height);
        }
    }

    /// Sets the minimum width that `self` should keep visible.
    /// Note that this can and (usually will) be smaller than the minimum
    /// size of the content.
    ///
    /// It is a programming error to set the minimum content width to a
    /// value greater than [`max-content-width`][struct@crate::ScrolledWindow#max-content-width].
    /// ## `width`
    /// the minimal content width
    #[doc(alias = "gtk_scrolled_window_set_min_content_width")]
    #[doc(alias = "min-content-width")]
    fn set_min_content_width(&self, width: i32) {
        unsafe {
            ffi::gtk_scrolled_window_set_min_content_width(self.as_ref().to_glib_none().0, width);
        }
    }

    /// Enables or disables overlay scrolling for this scrolled window.
    /// ## `overlay_scrolling`
    /// whether to enable overlay scrolling
    #[doc(alias = "gtk_scrolled_window_set_overlay_scrolling")]
    #[doc(alias = "overlay-scrolling")]
    fn set_overlay_scrolling(&self, overlay_scrolling: bool) {
        unsafe {
            ffi::gtk_scrolled_window_set_overlay_scrolling(
                self.as_ref().to_glib_none().0,
                overlay_scrolling.into_glib(),
            );
        }
    }

    /// Sets the placement of the contents with respect to the scrollbars
    /// for the scrolled window.
    ///
    /// The default is [`CornerType::TopLeft`][crate::CornerType::TopLeft], meaning the child is
    /// in the top left, with the scrollbars underneath and to the right.
    /// Other values in [`CornerType`][crate::CornerType] are [`CornerType::TopRight`][crate::CornerType::TopRight],
    /// [`CornerType::BottomLeft`][crate::CornerType::BottomLeft], and [`CornerType::BottomRight`][crate::CornerType::BottomRight].
    ///
    /// See also [`placement()`][Self::placement()] and
    /// [`unset_placement()`][Self::unset_placement()].
    /// ## `window_placement`
    /// position of the child window
    #[doc(alias = "gtk_scrolled_window_set_placement")]
    fn set_placement(&self, window_placement: CornerType) {
        unsafe {
            ffi::gtk_scrolled_window_set_placement(
                self.as_ref().to_glib_none().0,
                window_placement.into_glib(),
            );
        }
    }

    /// Sets the scrollbar policy for the horizontal and vertical scrollbars.
    ///
    /// The policy determines when the scrollbar should appear; it is a value
    /// from the [`PolicyType`][crate::PolicyType] enumeration. If [`PolicyType::Always`][crate::PolicyType::Always], the
    /// scrollbar is always present; if [`PolicyType::Never`][crate::PolicyType::Never], the scrollbar is
    /// never present; if [`PolicyType::Automatic`][crate::PolicyType::Automatic], the scrollbar is present only
    /// if needed (that is, if the slider part of the bar would be smaller
    /// than the trough — the display is larger than the page size).
    /// ## `hscrollbar_policy`
    /// policy for horizontal bar
    /// ## `vscrollbar_policy`
    /// policy for vertical bar
    #[doc(alias = "gtk_scrolled_window_set_policy")]
    fn set_policy(&self, hscrollbar_policy: PolicyType, vscrollbar_policy: PolicyType) {
        unsafe {
            ffi::gtk_scrolled_window_set_policy(
                self.as_ref().to_glib_none().0,
                hscrollbar_policy.into_glib(),
                vscrollbar_policy.into_glib(),
            );
        }
    }

    /// Sets whether the natural height of the child should be calculated and propagated
    /// through the scrolled window’s requested natural height.
    /// ## `propagate`
    /// whether to propagate natural height
    #[doc(alias = "gtk_scrolled_window_set_propagate_natural_height")]
    #[doc(alias = "propagate-natural-height")]
    fn set_propagate_natural_height(&self, propagate: bool) {
        unsafe {
            ffi::gtk_scrolled_window_set_propagate_natural_height(
                self.as_ref().to_glib_none().0,
                propagate.into_glib(),
            );
        }
    }

    /// Sets whether the natural width of the child should be calculated and propagated
    /// through the scrolled window’s requested natural width.
    /// ## `propagate`
    /// whether to propagate natural width
    #[doc(alias = "gtk_scrolled_window_set_propagate_natural_width")]
    #[doc(alias = "propagate-natural-width")]
    fn set_propagate_natural_width(&self, propagate: bool) {
        unsafe {
            ffi::gtk_scrolled_window_set_propagate_natural_width(
                self.as_ref().to_glib_none().0,
                propagate.into_glib(),
            );
        }
    }

    /// Changes the type of shadow drawn around the contents of
    /// `self`.
    /// ## `type_`
    /// kind of shadow to draw around scrolled window contents
    #[doc(alias = "gtk_scrolled_window_set_shadow_type")]
    #[doc(alias = "shadow-type")]
    fn set_shadow_type(&self, type_: ShadowType) {
        unsafe {
            ffi::gtk_scrolled_window_set_shadow_type(
                self.as_ref().to_glib_none().0,
                type_.into_glib(),
            );
        }
    }

    /// Sets the [`Adjustment`][crate::Adjustment] for the vertical scrollbar.
    /// ## `vadjustment`
    /// the [`Adjustment`][crate::Adjustment] to use, or [`None`] to create a new one
    #[doc(alias = "gtk_scrolled_window_set_vadjustment")]
    #[doc(alias = "vadjustment")]
    fn set_vadjustment(&self, vadjustment: Option<&impl IsA<Adjustment>>) {
        unsafe {
            ffi::gtk_scrolled_window_set_vadjustment(
                self.as_ref().to_glib_none().0,
                vadjustment.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    /// Unsets the placement of the contents with respect to the scrollbars
    /// for the scrolled window. If no window placement is set for a scrolled
    /// window, it defaults to [`CornerType::TopLeft`][crate::CornerType::TopLeft].
    ///
    /// See also [`set_placement()`][Self::set_placement()] and
    /// [`placement()`][Self::placement()].
    #[doc(alias = "gtk_scrolled_window_unset_placement")]
    fn unset_placement(&self) {
        unsafe {
            ffi::gtk_scrolled_window_unset_placement(self.as_ref().to_glib_none().0);
        }
    }

    #[doc(alias = "hscrollbar-policy")]
    fn hscrollbar_policy(&self) -> PolicyType {
        ObjectExt::property(self.as_ref(), "hscrollbar-policy")
    }

    #[doc(alias = "hscrollbar-policy")]
    fn set_hscrollbar_policy(&self, hscrollbar_policy: PolicyType) {
        ObjectExt::set_property(self.as_ref(), "hscrollbar-policy", hscrollbar_policy)
    }

    #[doc(alias = "vscrollbar-policy")]
    fn vscrollbar_policy(&self) -> PolicyType {
        ObjectExt::property(self.as_ref(), "vscrollbar-policy")
    }

    #[doc(alias = "vscrollbar-policy")]
    fn set_vscrollbar_policy(&self, vscrollbar_policy: PolicyType) {
        ObjectExt::set_property(self.as_ref(), "vscrollbar-policy", vscrollbar_policy)
    }

    #[doc(alias = "window-placement")]
    fn window_placement(&self) -> CornerType {
        ObjectExt::property(self.as_ref(), "window-placement")
    }

    #[doc(alias = "window-placement")]
    fn set_window_placement(&self, window_placement: CornerType) {
        ObjectExt::set_property(self.as_ref(), "window-placement", window_placement)
    }

    /// The ::edge-overshot signal is emitted whenever user initiated scrolling
    /// makes the scrolled window firmly surpass (i.e. with some edge resistance)
    /// the lower or upper limits defined by the adjustment in that orientation.
    ///
    /// A similar behavior without edge resistance is provided by the
    /// [`edge-reached`][struct@crate::ScrolledWindow#edge-reached] signal.
    ///
    /// Note: The `pos` argument is LTR/RTL aware, so callers should be aware too
    /// if intending to provide behavior on horizontal edges.
    /// ## `pos`
    /// edge side that was hit
    #[doc(alias = "edge-overshot")]
    fn connect_edge_overshot<F: Fn(&Self, PositionType) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn edge_overshot_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P, PositionType) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            pos: ffi::GtkPositionType,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref(),
                    from_glib(pos),
                )
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"edge-overshot".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    edge_overshot_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    /// The ::edge-reached signal is emitted whenever user-initiated scrolling
    /// makes the scrolled window exactly reach the lower or upper limits
    /// defined by the adjustment in that orientation.
    ///
    /// A similar behavior with edge resistance is provided by the
    /// [`edge-overshot`][struct@crate::ScrolledWindow#edge-overshot] signal.
    ///
    /// Note: The `pos` argument is LTR/RTL aware, so callers should be aware too
    /// if intending to provide behavior on horizontal edges.
    /// ## `pos`
    /// edge side that was reached
    #[doc(alias = "edge-reached")]
    fn connect_edge_reached<F: Fn(&Self, PositionType) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn edge_reached_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P, PositionType) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            pos: ffi::GtkPositionType,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref(),
                    from_glib(pos),
                )
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"edge-reached".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    edge_reached_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    /// The ::move-focus-out signal is a
    /// [keybinding signal][GtkBindingSignal] which gets
    /// emitted when focus is moved away from the scrolled window by a
    /// keybinding. The [`move-focus`][struct@crate::Widget#move-focus] signal is emitted with
    /// `direction_type` on this scrolled window’s toplevel parent in the
    /// container hierarchy. The default bindings for this signal are
    /// `Ctrl + Tab` to move forward and `Ctrl + Shift + Tab` to move backward.
    /// ## `direction_type`
    /// either [`DirectionType::TabForward`][crate::DirectionType::TabForward] or
    ///  [`DirectionType::TabBackward`][crate::DirectionType::TabBackward]
    #[doc(alias = "move-focus-out")]
    fn connect_move_focus_out<F: Fn(&Self, DirectionType) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn move_focus_out_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P, DirectionType) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            direction_type: ffi::GtkDirectionType,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref(),
                    from_glib(direction_type),
                )
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"move-focus-out".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    move_focus_out_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_move_focus_out(&self, direction_type: DirectionType) {
        self.emit_by_name::<()>("move-focus-out", &[&direction_type]);
    }

    /// The ::scroll-child signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted when a keybinding that scrolls is pressed.
    /// The horizontal or vertical adjustment is updated which triggers a
    /// signal that the scrolled window’s child may listen to and scroll itself.
    /// ## `scroll`
    /// a [`ScrollType`][crate::ScrollType] describing how much to scroll
    /// ## `horizontal`
    /// whether the keybinding scrolls the child
    ///  horizontally or not
    #[doc(alias = "scroll-child")]
    fn connect_scroll_child<F: Fn(&Self, ScrollType, bool) -> bool + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn scroll_child_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P, ScrollType, bool) -> bool + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            scroll: ffi::GtkScrollType,
            horizontal: glib::ffi::gboolean,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref(),
                    from_glib(scroll),
                    from_glib(horizontal),
                )
                .into_glib()
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"scroll-child".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    scroll_child_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_scroll_child(&self, scroll: ScrollType, horizontal: bool) -> bool {
        self.emit_by_name("scroll-child", &[&scroll, &horizontal])
    }

    #[doc(alias = "hadjustment")]
    fn connect_hadjustment_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_hadjustment_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::hadjustment".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_hadjustment_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "hscrollbar-policy")]
    fn connect_hscrollbar_policy_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_hscrollbar_policy_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::hscrollbar-policy".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_hscrollbar_policy_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "kinetic-scrolling")]
    fn connect_kinetic_scrolling_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_kinetic_scrolling_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::kinetic-scrolling".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_kinetic_scrolling_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "max-content-height")]
    fn connect_max_content_height_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_max_content_height_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::max-content-height".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_max_content_height_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "max-content-width")]
    fn connect_max_content_width_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_max_content_width_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::max-content-width".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_max_content_width_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "min-content-height")]
    fn connect_min_content_height_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_min_content_height_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::min-content-height".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_min_content_height_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "min-content-width")]
    fn connect_min_content_width_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_min_content_width_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::min-content-width".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_min_content_width_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "overlay-scrolling")]
    fn connect_overlay_scrolling_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_overlay_scrolling_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::overlay-scrolling".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_overlay_scrolling_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "propagate-natural-height")]
    fn connect_propagate_natural_height_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_propagate_natural_height_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::propagate-natural-height".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_propagate_natural_height_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "propagate-natural-width")]
    fn connect_propagate_natural_width_notify<F: Fn(&Self) + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn notify_propagate_natural_width_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::propagate-natural-width".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_propagate_natural_width_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "shadow-type")]
    fn connect_shadow_type_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_shadow_type_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::shadow-type".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_shadow_type_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "vadjustment")]
    fn connect_vadjustment_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_vadjustment_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::vadjustment".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_vadjustment_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "vscrollbar-policy")]
    fn connect_vscrollbar_policy_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_vscrollbar_policy_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::vscrollbar-policy".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_vscrollbar_policy_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "window-placement")]
    fn connect_window_placement_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_window_placement_trampoline<
            P: IsA<ScrolledWindow>,
            F: Fn(&P) + 'static,
        >(
            this: *mut ffi::GtkScrolledWindow,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ScrolledWindow::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::window-placement".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_window_placement_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl<O: IsA<ScrolledWindow>> ScrolledWindowExt for O {}