gtk/auto/

combo_box.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::{
    Align, Bin, Buildable, CellArea, CellEditable, CellLayout, Container, ResizeMode, ScrollType,
    SensitivityType, TreeIter, TreeModel, Widget, ffi,
};
use glib::{
    object::ObjectType as _,
    prelude::*,
    signal::{SignalHandlerId, connect_raw},
    translate::*,
};
use std::boxed::Box as Box_;

glib::wrapper! {
    /// A GtkComboBox is a widget that allows the user to choose from a list of
    /// valid choices. The GtkComboBox displays the selected choice. When
    /// activated, the GtkComboBox displays a popup which allows the user to
    /// make a new choice. The style in which the selected value is displayed,
    /// and the style of the popup is determined by the current theme. It may
    /// be similar to a Windows-style combo box.
    ///
    /// The GtkComboBox uses the model-view pattern; the list of valid choices
    /// is specified in the form of a tree model, and the display of the choices
    /// can be adapted to the data in the model by using cell renderers, as you
    /// would in a tree view. This is possible since GtkComboBox implements the
    /// [`CellLayout`][crate::CellLayout] interface. The tree model holding the valid choices is
    /// not restricted to a flat list, it can be a real tree, and the popup will
    /// reflect the tree structure.
    ///
    /// To allow the user to enter values not in the model, the “has-entry”
    /// property allows the GtkComboBox to contain a [`Entry`][crate::Entry]. This entry
    /// can be accessed by calling [`BinExt::child()`][crate::prelude::BinExt::child()] on the combo box.
    ///
    /// For a simple list of textual choices, the model-view API of GtkComboBox
    /// can be a bit overwhelming. In this case, [`ComboBoxText`][crate::ComboBoxText] offers a
    /// simple alternative. Both GtkComboBox and [`ComboBoxText`][crate::ComboBoxText] can contain
    /// an entry.
    ///
    /// # CSS nodes
    ///
    ///
    ///
    /// **⚠️ The following code is in plain ⚠️**
    ///
    /// ```plain
    /// combobox
    /// ├── box.linked
    /// │   ╰── button.combo
    /// │       ╰── box
    /// │           ├── cellview
    /// │           ╰── arrow
    /// ╰── window.popup
    /// ```
    ///
    /// A normal combobox contains a box with the .linked class, a button
    /// with the .combo class and inside those buttons, there are a cellview and
    /// an arrow.
    ///
    ///
    ///
    /// **⚠️ The following code is in plain ⚠️**
    ///
    /// ```plain
    /// combobox
    /// ├── box.linked
    /// │   ├── entry.combo
    /// │   ╰── button.combo
    /// │       ╰── box
    /// │           ╰── arrow
    /// ╰── window.popup
    /// ```
    ///
    /// A GtkComboBox with an entry has a single CSS node with name combobox. It
    /// contains a box with the .linked class. That box contains an entry and a
    /// button, both with the .combo class added.
    /// The button also contains another node with name arrow.
    ///
    /// ## Properties
    ///
    ///
    /// #### `active`
    ///  The item which is currently active. If the model is a non-flat treemodel,
    /// and the active item is not an immediate child of the root of the tree,
    /// this property has the value
    /// `gtk_tree_path_get_indices (path)[0]`,
    /// where `path` is the [`TreePath`][crate::TreePath] of the active item.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `active-id`
    ///  The value of the ID column of the active row.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `add-tearoffs`
    ///  The add-tearoffs property controls whether generated menus
    /// have tearoff menu items.
    ///
    /// Note that this only affects menu style combo boxes.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `button-sensitivity`
    ///  Whether the dropdown button is sensitive when
    /// the model is empty.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `cell-area`
    ///  The [`CellArea`][crate::CellArea] used to layout cell renderers for this combo box.
    ///
    /// If no area is specified when creating the combo box with [`ComboBox::with_area()`][crate::ComboBox::with_area()]
    /// a horizontally oriented [`CellAreaBox`][crate::CellAreaBox] will be used.
    ///
    /// Readable | Writable | Construct Only
    ///
    ///
    /// #### `column-span-column`
    ///  If this is set to a non-negative value, it must be the index of a column
    /// of type `G_TYPE_INT` in the model. The value in that column for each item
    /// will determine how many columns that item will span in the popup.
    /// Therefore, values in this column must be greater than zero, and the sum of
    /// an item’s column position + span should not exceed [`wrap-width`][struct@crate::ComboBox#wrap-width].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `entry-text-column`
    ///  The column in the combo box's model to associate with strings from the entry
    /// if the combo was created with [`has-entry`][struct@crate::ComboBox#has-entry] = [`true`].
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `has-entry`
    ///  Whether the combo box has an entry.
    ///
    /// Readable | Writable | Construct Only
    ///
    ///
    /// #### `has-frame`
    ///  The has-frame property controls whether a frame
    /// is drawn around the entry.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `id-column`
    ///  The column in the combo box's model that provides string
    /// IDs for the values in the model, if != -1.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `model`
    ///  The model from which the combo box takes the values shown
    /// in the list.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `popup-fixed-width`
    ///  Whether the popup's width should be a fixed width matching the
    /// allocated width of the combo box.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `popup-shown`
    ///  Whether the combo boxes dropdown is popped up.
    /// Note that this property is mainly useful, because
    /// it allows you to connect to notify::popup-shown.
    ///
    /// Readable
    ///
    ///
    /// #### `row-span-column`
    ///  If this is set to a non-negative value, it must be the index of a column
    /// of type `G_TYPE_INT` in the model. The value in that column for each item
    /// will determine how many rows that item will span in the popup. Therefore,
    /// values in this column must be greater than zero.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `tearoff-title`
    ///  A title that may be displayed by the window manager
    /// when the popup is torn-off.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `wrap-width`
    ///  If wrap-width is set to a positive value, items in the popup will be laid
    /// out along multiple columns, starting a new row on reaching the wrap width.
    ///
    /// 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>
    /// <details><summary><h4>CellEditable</h4></summary>
    ///
    ///
    /// #### `editing-canceled`
    ///  Indicates whether editing on the cell has been canceled.
    ///
    /// Readable | Writable
    /// </details>
    ///
    /// ## Signals
    ///
    ///
    /// #### `changed`
    ///  The changed signal is emitted when the active
    /// item is changed. The can be due to the user selecting
    /// a different item from the list, or due to a
    /// call to [`ComboBoxExt::set_active_iter()`][crate::prelude::ComboBoxExt::set_active_iter()].
    /// It will also be emitted while typing into the entry of a combo box
    /// with an entry.
    ///
    ///
    ///
    ///
    /// #### `format-entry-text`
    ///  For combo boxes that are created with an entry (See GtkComboBox:has-entry).
    ///
    /// A signal which allows you to change how the text displayed in a combo box's
    /// entry is displayed.
    ///
    /// Connect a signal handler which returns an allocated string representing
    /// `path`. That string will then be used to set the text in the combo box's entry.
    /// The default signal handler uses the text from the GtkComboBox::entry-text-column
    /// model column.
    ///
    /// Here's an example signal handler which fetches data from the model and
    /// displays it in the entry.
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// static gchar*
    /// format_entry_text_callback (GtkComboBox *combo,
    ///                             const gchar *path,
    ///                             gpointer     user_data)
    /// {
    ///   GtkTreeIter iter;
    ///   GtkTreeModel model;
    ///   gdouble      value;
    ///
    ///   model = gtk_combo_box_get_model (combo);
    ///
    ///   gtk_tree_model_get_iter_from_string (model, &iter, path);
    ///   gtk_tree_model_get (model, &iter,
    ///                       THE_DOUBLE_VALUE_COLUMN, &value,
    ///                       -1);
    ///
    ///   return g_strdup_printf ("%g", value);
    /// }
    /// ```
    ///
    ///
    ///
    ///
    /// #### `move-active`
    ///  The ::move-active signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to move the active selection.
    ///
    /// Action
    ///
    ///
    /// #### `popdown`
    ///  The ::popdown signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to popdown the combo box list.
    ///
    /// The default bindings for this signal are Alt+Up and Escape.
    ///
    /// Action
    ///
    ///
    /// #### `popup`
    ///  The ::popup signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to popup the combo box list.
    ///
    /// The default binding for this signal is Alt+Down.
    ///
    /// 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>
    /// <details><summary><h4>CellEditable</h4></summary>
    ///
    ///
    /// #### `editing-done`
    ///  This signal is a sign for the cell renderer to update its
    /// value from the `cell_editable`.
    ///
    /// Implementations of [`CellEditable`][crate::CellEditable] are responsible for
    /// emitting this signal when they are done editing, e.g.
    /// [`Entry`][crate::Entry] emits this signal when the user presses Enter. Typical things to
    /// do in a handler for ::editing-done are to capture the edited value,
    /// disconnect the `cell_editable` from signals on the [`CellRenderer`][crate::CellRenderer], etc.
    ///
    /// [`CellEditableExt::editing_done()`][crate::prelude::CellEditableExt::editing_done()] is a convenience method
    /// for emitting [`editing-done`][struct@crate::CellEditable#editing-done].
    ///
    ///
    ///
    ///
    /// #### `remove-widget`
    ///  This signal is meant to indicate that the cell is finished
    /// editing, and the `cell_editable` widget is being removed and may
    /// subsequently be destroyed.
    ///
    /// Implementations of [`CellEditable`][crate::CellEditable] are responsible for
    /// emitting this signal when they are done editing. It must
    /// be emitted after the [`editing-done`][struct@crate::CellEditable#editing-done] signal,
    /// to give the cell renderer a chance to update the cell's value
    /// before the widget is removed.
    ///
    /// [`CellEditableExt::remove_widget()`][crate::prelude::CellEditableExt::remove_widget()] is a convenience method
    /// for emitting [`remove-widget`][struct@crate::CellEditable#remove-widget].
    ///
    ///
    /// </details>
    ///
    /// # Implements
    ///
    /// [`ComboBoxExt`][trait@crate::prelude::ComboBoxExt], [`BinExt`][trait@crate::prelude::BinExt], [`ContainerExt`][trait@crate::prelude::ContainerExt], [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`CellEditableExt`][trait@crate::prelude::CellEditableExt], [`CellLayoutExt`][trait@crate::prelude::CellLayoutExt], [`ComboBoxExtManual`][trait@crate::prelude::ComboBoxExtManual], [`ContainerExtManual`][trait@crate::prelude::ContainerExtManual], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`BuildableExtManual`][trait@crate::prelude::BuildableExtManual]
    #[doc(alias = "GtkComboBox")]
    pub struct ComboBox(Object<ffi::GtkComboBox, ffi::GtkComboBoxClass>) @extends Bin, Container, Widget, @implements Buildable, CellEditable, CellLayout;

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

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

    /// Creates a new empty [`ComboBox`][crate::ComboBox].
    ///
    /// # Returns
    ///
    /// A new [`ComboBox`][crate::ComboBox].
    #[doc(alias = "gtk_combo_box_new")]
    pub fn new() -> ComboBox {
        assert_initialized_main_thread!();
        unsafe { Widget::from_glib_none(ffi::gtk_combo_box_new()).unsafe_cast() }
    }

    /// Creates a new empty [`ComboBox`][crate::ComboBox] using `area` to layout cells.
    /// ## `area`
    /// the [`CellArea`][crate::CellArea] to use to layout cell renderers
    ///
    /// # Returns
    ///
    /// A new [`ComboBox`][crate::ComboBox].
    #[doc(alias = "gtk_combo_box_new_with_area")]
    #[doc(alias = "new_with_area")]
    pub fn with_area(area: &impl IsA<CellArea>) -> ComboBox {
        skip_assert_initialized!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_combo_box_new_with_area(
                area.as_ref().to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

    /// Creates a new empty [`ComboBox`][crate::ComboBox] with an entry.
    ///
    /// The new combo box will use `area` to layout cells.
    /// ## `area`
    /// the [`CellArea`][crate::CellArea] to use to layout cell renderers
    ///
    /// # Returns
    ///
    /// A new [`ComboBox`][crate::ComboBox].
    #[doc(alias = "gtk_combo_box_new_with_area_and_entry")]
    #[doc(alias = "new_with_area_and_entry")]
    pub fn with_area_and_entry(area: &impl IsA<CellArea>) -> ComboBox {
        skip_assert_initialized!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_combo_box_new_with_area_and_entry(
                area.as_ref().to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

    /// Creates a new empty [`ComboBox`][crate::ComboBox] with an entry.
    ///
    /// # Returns
    ///
    /// A new [`ComboBox`][crate::ComboBox].
    #[doc(alias = "gtk_combo_box_new_with_entry")]
    #[doc(alias = "new_with_entry")]
    pub fn with_entry() -> ComboBox {
        assert_initialized_main_thread!();
        unsafe { Widget::from_glib_none(ffi::gtk_combo_box_new_with_entry()).unsafe_cast() }
    }

    /// Creates a new [`ComboBox`][crate::ComboBox] with the model initialized to `model`.
    /// ## `model`
    /// A [`TreeModel`][crate::TreeModel].
    ///
    /// # Returns
    ///
    /// A new [`ComboBox`][crate::ComboBox].
    #[doc(alias = "gtk_combo_box_new_with_model")]
    #[doc(alias = "new_with_model")]
    pub fn with_model(model: &impl IsA<TreeModel>) -> ComboBox {
        skip_assert_initialized!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_combo_box_new_with_model(
                model.as_ref().to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

    /// Creates a new empty [`ComboBox`][crate::ComboBox] with an entry
    /// and with the model initialized to `model`.
    /// ## `model`
    /// A [`TreeModel`][crate::TreeModel]
    ///
    /// # Returns
    ///
    /// A new [`ComboBox`][crate::ComboBox]
    #[doc(alias = "gtk_combo_box_new_with_model_and_entry")]
    #[doc(alias = "new_with_model_and_entry")]
    pub fn with_model_and_entry(model: &impl IsA<TreeModel>) -> ComboBox {
        skip_assert_initialized!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_combo_box_new_with_model_and_entry(
                model.as_ref().to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

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

impl Default for ComboBox {
    fn default() -> Self {
        Self::new()
    }
}

// rustdoc-stripper-ignore-next
/// A [builder-pattern] type to construct [`ComboBox`] 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 ComboBoxBuilder {
    builder: glib::object::ObjectBuilder<'static, ComboBox>,
}

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

    /// The item which is currently active. If the model is a non-flat treemodel,
    /// and the active item is not an immediate child of the root of the tree,
    /// this property has the value
    /// `gtk_tree_path_get_indices (path)[0]`,
    /// where `path` is the [`TreePath`][crate::TreePath] of the active item.
    pub fn active(self, active: i32) -> Self {
        Self {
            builder: self.builder.property("active", active),
        }
    }

    /// The value of the ID column of the active row.
    pub fn active_id(self, active_id: impl Into<glib::GString>) -> Self {
        Self {
            builder: self.builder.property("active-id", active_id.into()),
        }
    }

    /// Whether the dropdown button is sensitive when
    /// the model is empty.
    pub fn button_sensitivity(self, button_sensitivity: SensitivityType) -> Self {
        Self {
            builder: self
                .builder
                .property("button-sensitivity", button_sensitivity),
        }
    }

    /// The [`CellArea`][crate::CellArea] used to layout cell renderers for this combo box.
    ///
    /// If no area is specified when creating the combo box with [`ComboBox::with_area()`][crate::ComboBox::with_area()]
    /// a horizontally oriented [`CellAreaBox`][crate::CellAreaBox] will be used.
    pub fn cell_area(self, cell_area: &impl IsA<CellArea>) -> Self {
        Self {
            builder: self
                .builder
                .property("cell-area", cell_area.clone().upcast()),
        }
    }

    /// If this is set to a non-negative value, it must be the index of a column
    /// of type `G_TYPE_INT` in the model. The value in that column for each item
    /// will determine how many columns that item will span in the popup.
    /// Therefore, values in this column must be greater than zero, and the sum of
    /// an item’s column position + span should not exceed [`wrap-width`][struct@crate::ComboBox#wrap-width].
    pub fn column_span_column(self, column_span_column: i32) -> Self {
        Self {
            builder: self
                .builder
                .property("column-span-column", column_span_column),
        }
    }

    /// The column in the combo box's model to associate with strings from the entry
    /// if the combo was created with [`has-entry`][struct@crate::ComboBox#has-entry] = [`true`].
    pub fn entry_text_column(self, entry_text_column: i32) -> Self {
        Self {
            builder: self
                .builder
                .property("entry-text-column", entry_text_column),
        }
    }

    /// Whether the combo box has an entry.
    pub fn has_entry(self, has_entry: bool) -> Self {
        Self {
            builder: self.builder.property("has-entry", has_entry),
        }
    }

    /// The has-frame property controls whether a frame
    /// is drawn around the entry.
    pub fn has_frame(self, has_frame: bool) -> Self {
        Self {
            builder: self.builder.property("has-frame", has_frame),
        }
    }

    /// The column in the combo box's model that provides string
    /// IDs for the values in the model, if != -1.
    pub fn id_column(self, id_column: i32) -> Self {
        Self {
            builder: self.builder.property("id-column", id_column),
        }
    }

    /// The model from which the combo box takes the values shown
    /// in the list.
    pub fn model(self, model: &impl IsA<TreeModel>) -> Self {
        Self {
            builder: self.builder.property("model", model.clone().upcast()),
        }
    }

    /// Whether the popup's width should be a fixed width matching the
    /// allocated width of the combo box.
    pub fn popup_fixed_width(self, popup_fixed_width: bool) -> Self {
        Self {
            builder: self
                .builder
                .property("popup-fixed-width", popup_fixed_width),
        }
    }

    /// If this is set to a non-negative value, it must be the index of a column
    /// of type `G_TYPE_INT` in the model. The value in that column for each item
    /// will determine how many rows that item will span in the popup. Therefore,
    /// values in this column must be greater than zero.
    pub fn row_span_column(self, row_span_column: i32) -> Self {
        Self {
            builder: self.builder.property("row-span-column", row_span_column),
        }
    }

    /// If wrap-width is set to a positive value, items in the popup will be laid
    /// out along multiple columns, starting a new row on reaching the wrap width.
    pub fn wrap_width(self, wrap_width: i32) -> Self {
        Self {
            builder: self.builder.property("wrap-width", wrap_width),
        }
    }

    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),
        }
    }

    /// Indicates whether editing on the cell has been canceled.
    pub fn editing_canceled(self, editing_canceled: bool) -> Self {
        Self {
            builder: self.builder.property("editing-canceled", editing_canceled),
        }
    }

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

/// Trait containing all [`struct@ComboBox`] methods.
///
/// # Implementors
///
/// [`AppChooserButton`][struct@crate::AppChooserButton], [`ComboBoxText`][struct@crate::ComboBoxText], [`ComboBox`][struct@crate::ComboBox]
pub trait ComboBoxExt: IsA<ComboBox> + 'static {
    /// Returns the ID of the active row of `self`. This value is taken
    /// from the active row and the column specified by the [`id-column`][struct@crate::ComboBox#id-column]
    /// property of `self` (see [`set_id_column()`][Self::set_id_column()]).
    ///
    /// The returned value is an interned string which means that you can
    /// compare the pointer by value to other interned strings and that you
    /// must not free it.
    ///
    /// If the [`id-column`][struct@crate::ComboBox#id-column] property of `self` is not set, or if
    /// no row is active, or if the active row has a [`None`] ID value, then [`None`]
    /// is returned.
    ///
    /// # Returns
    ///
    /// the ID of the active row, or [`None`]
    #[doc(alias = "gtk_combo_box_get_active_id")]
    #[doc(alias = "get_active_id")]
    #[doc(alias = "active-id")]
    fn active_id(&self) -> Option<glib::GString> {
        unsafe {
            from_glib_none(ffi::gtk_combo_box_get_active_id(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Sets `iter` to point to the currently active item, if any item is active.
    /// Otherwise, `iter` is left unchanged.
    ///
    /// # Returns
    ///
    /// [`true`] if `iter` was set, [`false`] otherwise
    ///
    /// ## `iter`
    /// A [`TreeIter`][crate::TreeIter]
    #[doc(alias = "gtk_combo_box_get_active_iter")]
    #[doc(alias = "get_active_iter")]
    fn active_iter(&self) -> Option<TreeIter> {
        unsafe {
            let mut iter = TreeIter::uninitialized();
            let ret = from_glib(ffi::gtk_combo_box_get_active_iter(
                self.as_ref().to_glib_none().0,
                iter.to_glib_none_mut().0,
            ));
            if ret { Some(iter) } else { None }
        }
    }

    /// Returns whether the combo box sets the dropdown button
    /// sensitive or not when there are no items in the model.
    ///
    /// # Returns
    ///
    /// [`SensitivityType::On`][crate::SensitivityType::On] if the dropdown button
    ///  is sensitive when the model is empty, [`SensitivityType::Off`][crate::SensitivityType::Off]
    ///  if the button is always insensitive or
    ///  [`SensitivityType::Auto`][crate::SensitivityType::Auto] if it is only sensitive as long as
    ///  the model has one item to be selected.
    #[doc(alias = "gtk_combo_box_get_button_sensitivity")]
    #[doc(alias = "get_button_sensitivity")]
    #[doc(alias = "button-sensitivity")]
    fn button_sensitivity(&self) -> SensitivityType {
        unsafe {
            from_glib(ffi::gtk_combo_box_get_button_sensitivity(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the column with column span information for `self`.
    ///
    /// # Returns
    ///
    /// the column span column.
    #[doc(alias = "gtk_combo_box_get_column_span_column")]
    #[doc(alias = "get_column_span_column")]
    #[doc(alias = "column-span-column")]
    fn column_span_column(&self) -> i32 {
        unsafe { ffi::gtk_combo_box_get_column_span_column(self.as_ref().to_glib_none().0) }
    }

    /// Returns the column which `self` is using to get the strings
    /// from to display in the internal entry.
    ///
    /// # Returns
    ///
    /// A column in the data source model of `self`.
    #[doc(alias = "gtk_combo_box_get_entry_text_column")]
    #[doc(alias = "get_entry_text_column")]
    #[doc(alias = "entry-text-column")]
    fn entry_text_column(&self) -> i32 {
        unsafe { ffi::gtk_combo_box_get_entry_text_column(self.as_ref().to_glib_none().0) }
    }

    /// Returns whether the combo box has an entry.
    ///
    /// # Returns
    ///
    /// whether there is an entry in `self`.
    #[doc(alias = "gtk_combo_box_get_has_entry")]
    #[doc(alias = "get_has_entry")]
    #[doc(alias = "has-entry")]
    fn has_entry(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_combo_box_get_has_entry(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the column which `self` is using to get string IDs
    /// for values from.
    ///
    /// # Returns
    ///
    /// A column in the data source model of `self`.
    #[doc(alias = "gtk_combo_box_get_id_column")]
    #[doc(alias = "get_id_column")]
    #[doc(alias = "id-column")]
    fn id_column(&self) -> i32 {
        unsafe { ffi::gtk_combo_box_get_id_column(self.as_ref().to_glib_none().0) }
    }

    /// Returns the [`TreeModel`][crate::TreeModel] which is acting as data source for `self`.
    ///
    /// # Returns
    ///
    /// A [`TreeModel`][crate::TreeModel] which was passed
    ///  during construction.
    #[doc(alias = "gtk_combo_box_get_model")]
    #[doc(alias = "get_model")]
    fn model(&self) -> Option<TreeModel> {
        unsafe { from_glib_none(ffi::gtk_combo_box_get_model(self.as_ref().to_glib_none().0)) }
    }

    /// Gets the accessible object corresponding to the combo box’s popup.
    ///
    /// This function is mostly intended for use by accessibility technologies;
    /// applications should have little use for it.
    ///
    /// # Returns
    ///
    /// the accessible object corresponding
    ///  to the combo box’s popup.
    #[doc(alias = "gtk_combo_box_get_popup_accessible")]
    #[doc(alias = "get_popup_accessible")]
    fn popup_accessible(&self) -> Option<atk::Object> {
        unsafe {
            from_glib_none(ffi::gtk_combo_box_get_popup_accessible(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets whether the popup uses a fixed width matching
    /// the allocated width of the combo box.
    ///
    /// # Returns
    ///
    /// [`true`] if the popup uses a fixed width
    #[doc(alias = "gtk_combo_box_get_popup_fixed_width")]
    #[doc(alias = "get_popup_fixed_width")]
    #[doc(alias = "popup-fixed-width")]
    fn is_popup_fixed_width(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_combo_box_get_popup_fixed_width(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    //#[doc(alias = "gtk_combo_box_get_row_separator_func")]
    //#[doc(alias = "get_row_separator_func")]
    //fn row_separator_func(&self) -> Option<Box_<dyn Fn(&TreeModel, &TreeIter) -> bool + 'static>> {
    //    unsafe { TODO: call ffi:gtk_combo_box_get_row_separator_func() }
    //}

    /// Returns the column with row span information for `self`.
    ///
    /// # Returns
    ///
    /// the row span column.
    #[doc(alias = "gtk_combo_box_get_row_span_column")]
    #[doc(alias = "get_row_span_column")]
    #[doc(alias = "row-span-column")]
    fn row_span_column(&self) -> i32 {
        unsafe { ffi::gtk_combo_box_get_row_span_column(self.as_ref().to_glib_none().0) }
    }

    /// Returns the wrap width which is used to determine the number of columns
    /// for the popup menu. If the wrap width is larger than 1, the combo box
    /// is in table mode.
    ///
    /// # Returns
    ///
    /// the wrap width.
    #[doc(alias = "gtk_combo_box_get_wrap_width")]
    #[doc(alias = "get_wrap_width")]
    #[doc(alias = "wrap-width")]
    fn wrap_width(&self) -> i32 {
        unsafe { ffi::gtk_combo_box_get_wrap_width(self.as_ref().to_glib_none().0) }
    }

    /// Hides the menu or dropdown list of `self`.
    ///
    /// This function is mostly intended for use by accessibility technologies;
    /// applications should have little use for it.
    #[doc(alias = "gtk_combo_box_popdown")]
    fn popdown(&self) {
        unsafe {
            ffi::gtk_combo_box_popdown(self.as_ref().to_glib_none().0);
        }
    }

    /// Pops up the menu or dropdown list of `self`.
    ///
    /// This function is mostly intended for use by accessibility technologies;
    /// applications should have little use for it.
    ///
    /// Before calling this, `self` must be mapped, or nothing will happen.
    #[doc(alias = "gtk_combo_box_popup")]
    fn popup(&self) {
        unsafe {
            ffi::gtk_combo_box_popup(self.as_ref().to_glib_none().0);
        }
    }

    /// Pops up the menu or dropdown list of `self`, the popup window
    /// will be grabbed so only `device` and its associated pointer/keyboard
    /// are the only `GdkDevices` able to send events to it.
    /// ## `device`
    /// a [`gdk::Device`][crate::gdk::Device]
    #[doc(alias = "gtk_combo_box_popup_for_device")]
    fn popup_for_device(&self, device: &gdk::Device) {
        unsafe {
            ffi::gtk_combo_box_popup_for_device(
                self.as_ref().to_glib_none().0,
                device.to_glib_none().0,
            );
        }
    }

    /// Changes the active row of `self` to the one that has an ID equal to
    /// `active_id`, or unsets the active row if `active_id` is [`None`]. Rows having
    /// a [`None`] ID string cannot be made active by this function.
    ///
    /// If the [`id-column`][struct@crate::ComboBox#id-column] property of `self` is unset or if no
    /// row has the given ID then the function does nothing and returns [`false`].
    /// ## `active_id`
    /// the ID of the row to select, or [`None`]
    ///
    /// # Returns
    ///
    /// [`true`] if a row with a matching ID was found. If a [`None`]
    ///  `active_id` was given to unset the active row, the function
    ///  always returns [`true`].
    #[doc(alias = "gtk_combo_box_set_active_id")]
    #[doc(alias = "active-id")]
    fn set_active_id(&self, active_id: Option<&str>) -> bool {
        unsafe {
            from_glib(ffi::gtk_combo_box_set_active_id(
                self.as_ref().to_glib_none().0,
                active_id.to_glib_none().0,
            ))
        }
    }

    /// Sets the current active item to be the one referenced by `iter`, or
    /// unsets the active item if `iter` is [`None`].
    /// ## `iter`
    /// The [`TreeIter`][crate::TreeIter], or [`None`]
    #[doc(alias = "gtk_combo_box_set_active_iter")]
    fn set_active_iter(&self, iter: Option<&TreeIter>) {
        unsafe {
            ffi::gtk_combo_box_set_active_iter(
                self.as_ref().to_glib_none().0,
                mut_override(iter.to_glib_none().0),
            );
        }
    }

    /// Sets whether the dropdown button of the combo box should be
    /// always sensitive ([`SensitivityType::On`][crate::SensitivityType::On]), never sensitive ([`SensitivityType::Off`][crate::SensitivityType::Off])
    /// or only if there is at least one item to display ([`SensitivityType::Auto`][crate::SensitivityType::Auto]).
    /// ## `sensitivity`
    /// specify the sensitivity of the dropdown button
    #[doc(alias = "gtk_combo_box_set_button_sensitivity")]
    #[doc(alias = "button-sensitivity")]
    fn set_button_sensitivity(&self, sensitivity: SensitivityType) {
        unsafe {
            ffi::gtk_combo_box_set_button_sensitivity(
                self.as_ref().to_glib_none().0,
                sensitivity.into_glib(),
            );
        }
    }

    /// Sets the column with column span information for `self` to be
    /// `column_span`. The column span column contains integers which indicate
    /// how many columns an item should span.
    /// ## `column_span`
    /// A column in the model passed during construction
    #[doc(alias = "gtk_combo_box_set_column_span_column")]
    #[doc(alias = "column-span-column")]
    fn set_column_span_column(&self, column_span: i32) {
        unsafe {
            ffi::gtk_combo_box_set_column_span_column(self.as_ref().to_glib_none().0, column_span);
        }
    }

    /// Sets the model column which `self` should use to get strings from
    /// to be `text_column`. The column `text_column` in the model of `self`
    /// must be of type `G_TYPE_STRING`.
    ///
    /// This is only relevant if `self` has been created with
    /// [`has-entry`][struct@crate::ComboBox#has-entry] as [`true`].
    /// ## `text_column`
    /// A column in `model` to get the strings from for
    ///  the internal entry
    #[doc(alias = "gtk_combo_box_set_entry_text_column")]
    #[doc(alias = "entry-text-column")]
    fn set_entry_text_column(&self, text_column: i32) {
        unsafe {
            ffi::gtk_combo_box_set_entry_text_column(self.as_ref().to_glib_none().0, text_column);
        }
    }

    /// Sets the model column which `self` should use to get string IDs
    /// for values from. The column `id_column` in the model of `self`
    /// must be of type `G_TYPE_STRING`.
    /// ## `id_column`
    /// A column in `model` to get string IDs for values from
    #[doc(alias = "gtk_combo_box_set_id_column")]
    #[doc(alias = "id-column")]
    fn set_id_column(&self, id_column: i32) {
        unsafe {
            ffi::gtk_combo_box_set_id_column(self.as_ref().to_glib_none().0, id_column);
        }
    }

    /// Sets the model used by `self` to be `model`. Will unset a previously set
    /// model (if applicable). If model is [`None`], then it will unset the model.
    ///
    /// Note that this function does not clear the cell renderers, you have to
    /// call [`CellLayoutExt::clear()`][crate::prelude::CellLayoutExt::clear()] yourself if you need to set up different
    /// cell renderers for the new model.
    /// ## `model`
    /// A [`TreeModel`][crate::TreeModel]
    #[doc(alias = "gtk_combo_box_set_model")]
    #[doc(alias = "model")]
    fn set_model(&self, model: Option<&impl IsA<TreeModel>>) {
        unsafe {
            ffi::gtk_combo_box_set_model(
                self.as_ref().to_glib_none().0,
                model.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    /// Specifies whether the popup’s width should be a fixed width
    /// matching the allocated width of the combo box.
    /// ## `fixed`
    /// whether to use a fixed popup width
    #[doc(alias = "gtk_combo_box_set_popup_fixed_width")]
    #[doc(alias = "popup-fixed-width")]
    fn set_popup_fixed_width(&self, fixed: bool) {
        unsafe {
            ffi::gtk_combo_box_set_popup_fixed_width(
                self.as_ref().to_glib_none().0,
                fixed.into_glib(),
            );
        }
    }

    /// Sets the row separator function, which is used to determine
    /// whether a row should be drawn as a separator. If the row separator
    /// function is [`None`], no separators are drawn. This is the default value.
    /// ## `func`
    /// a `GtkTreeViewRowSeparatorFunc`
    #[doc(alias = "gtk_combo_box_set_row_separator_func")]
    fn set_row_separator_func<P: Fn(&TreeModel, &TreeIter) -> bool + 'static>(&self, func: P) {
        let func_data: Box_<P> = Box_::new(func);
        unsafe extern "C" fn func_func<P: Fn(&TreeModel, &TreeIter) -> bool + 'static>(
            model: *mut ffi::GtkTreeModel,
            iter: *mut ffi::GtkTreeIter,
            data: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            unsafe {
                let model = from_glib_borrow(model);
                let iter = from_glib_borrow(iter);
                let callback = &*(data as *mut P);
                (*callback)(&model, &iter).into_glib()
            }
        }
        let func = Some(func_func::<P> as _);
        unsafe extern "C" fn destroy_func<P: Fn(&TreeModel, &TreeIter) -> bool + 'static>(
            data: glib::ffi::gpointer,
        ) {
            unsafe {
                let _callback = Box_::from_raw(data as *mut P);
            }
        }
        let destroy_call3 = Some(destroy_func::<P> as _);
        let super_callback0: Box_<P> = func_data;
        unsafe {
            ffi::gtk_combo_box_set_row_separator_func(
                self.as_ref().to_glib_none().0,
                func,
                Box_::into_raw(super_callback0) as *mut _,
                destroy_call3,
            );
        }
    }

    /// Sets the column with row span information for `self` to be `row_span`.
    /// The row span column contains integers which indicate how many rows
    /// an item should span.
    /// ## `row_span`
    /// A column in the model passed during construction.
    #[doc(alias = "gtk_combo_box_set_row_span_column")]
    #[doc(alias = "row-span-column")]
    fn set_row_span_column(&self, row_span: i32) {
        unsafe {
            ffi::gtk_combo_box_set_row_span_column(self.as_ref().to_glib_none().0, row_span);
        }
    }

    /// Sets the wrap width of `self` to be `width`. The wrap width is basically
    /// the preferred number of columns when you want the popup to be layed out
    /// in a table.
    /// ## `width`
    /// Preferred number of columns
    #[doc(alias = "gtk_combo_box_set_wrap_width")]
    #[doc(alias = "wrap-width")]
    fn set_wrap_width(&self, width: i32) {
        unsafe {
            ffi::gtk_combo_box_set_wrap_width(self.as_ref().to_glib_none().0, width);
        }
    }

    /// The [`CellArea`][crate::CellArea] used to layout cell renderers for this combo box.
    ///
    /// If no area is specified when creating the combo box with [`ComboBox::with_area()`][crate::ComboBox::with_area()]
    /// a horizontally oriented [`CellAreaBox`][crate::CellAreaBox] will be used.
    #[doc(alias = "cell-area")]
    fn cell_area(&self) -> Option<CellArea> {
        ObjectExt::property(self.as_ref(), "cell-area")
    }

    /// The has-frame property controls whether a frame
    /// is drawn around the entry.
    #[doc(alias = "has-frame")]
    fn has_frame(&self) -> bool {
        ObjectExt::property(self.as_ref(), "has-frame")
    }

    /// The has-frame property controls whether a frame
    /// is drawn around the entry.
    #[doc(alias = "has-frame")]
    fn set_has_frame(&self, has_frame: bool) {
        ObjectExt::set_property(self.as_ref(), "has-frame", has_frame)
    }

    /// Whether the combo boxes dropdown is popped up.
    /// Note that this property is mainly useful, because
    /// it allows you to connect to notify::popup-shown.
    #[doc(alias = "popup-shown")]
    fn is_popup_shown(&self) -> bool {
        ObjectExt::property(self.as_ref(), "popup-shown")
    }

    /// The changed signal is emitted when the active
    /// item is changed. The can be due to the user selecting
    /// a different item from the list, or due to a
    /// call to [`set_active_iter()`][Self::set_active_iter()].
    /// It will also be emitted while typing into the entry of a combo box
    /// with an entry.
    #[doc(alias = "changed")]
    fn connect_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn changed_trampoline<P: IsA<ComboBox>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkComboBox,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ComboBox::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"changed".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    changed_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    /// For combo boxes that are created with an entry (See GtkComboBox:has-entry).
    ///
    /// A signal which allows you to change how the text displayed in a combo box's
    /// entry is displayed.
    ///
    /// Connect a signal handler which returns an allocated string representing
    /// `path`. That string will then be used to set the text in the combo box's entry.
    /// The default signal handler uses the text from the GtkComboBox::entry-text-column
    /// model column.
    ///
    /// Here's an example signal handler which fetches data from the model and
    /// displays it in the entry.
    ///
    ///
    /// **⚠️ The following code is in C ⚠️**
    ///
    /// ```C
    /// static gchar*
    /// format_entry_text_callback (GtkComboBox *combo,
    ///                             const gchar *path,
    ///                             gpointer     user_data)
    /// {
    ///   GtkTreeIter iter;
    ///   GtkTreeModel model;
    ///   gdouble      value;
    ///
    ///   model = gtk_combo_box_get_model (combo);
    ///
    ///   gtk_tree_model_get_iter_from_string (model, &iter, path);
    ///   gtk_tree_model_get (model, &iter,
    ///                       THE_DOUBLE_VALUE_COLUMN, &value,
    ///                       -1);
    ///
    ///   return g_strdup_printf ("%g", value);
    /// }
    /// ```
    /// ## `path`
    /// the GtkTreePath string from the combo box's current model to format text for
    ///
    /// # Returns
    ///
    /// a newly allocated string representing `path`
    /// for the current GtkComboBox model.
    #[doc(alias = "format-entry-text")]
    fn connect_format_entry_text<F: Fn(&Self, &str) -> String + 'static>(
        &self,
        f: F,
    ) -> SignalHandlerId {
        unsafe extern "C" fn format_entry_text_trampoline<
            P: IsA<ComboBox>,
            F: Fn(&P, &str) -> String + 'static,
        >(
            this: *mut ffi::GtkComboBox,
            path: *mut std::ffi::c_char,
            f: glib::ffi::gpointer,
        ) -> *mut std::ffi::c_char {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    ComboBox::from_glib_borrow(this).unsafe_cast_ref(),
                    &glib::GString::from_glib_borrow(path),
                )
                .to_glib_full()
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"format-entry-text".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    format_entry_text_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    /// The ::move-active signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to move the active selection.
    /// ## `scroll_type`
    /// a [`ScrollType`][crate::ScrollType]
    #[doc(alias = "move-active")]
    fn connect_move_active<F: Fn(&Self, ScrollType) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn move_active_trampoline<
            P: IsA<ComboBox>,
            F: Fn(&P, ScrollType) + 'static,
        >(
            this: *mut ffi::GtkComboBox,
            scroll_type: ffi::GtkScrollType,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(
                    ComboBox::from_glib_borrow(this).unsafe_cast_ref(),
                    from_glib(scroll_type),
                )
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"move-active".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    move_active_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_move_active(&self, scroll_type: ScrollType) {
        self.emit_by_name::<()>("move-active", &[&scroll_type]);
    }

    /// The ::popdown signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to popdown the combo box list.
    ///
    /// The default bindings for this signal are Alt+Up and Escape.
    #[doc(alias = "popdown")]
    fn connect_popdown<F: Fn(&Self) -> bool + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn popdown_trampoline<P: IsA<ComboBox>, F: Fn(&P) -> bool + 'static>(
            this: *mut ffi::GtkComboBox,
            f: glib::ffi::gpointer,
        ) -> glib::ffi::gboolean {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ComboBox::from_glib_borrow(this).unsafe_cast_ref()).into_glib()
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"popdown".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    popdown_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_popdown(&self) -> bool {
        self.emit_by_name("popdown", &[])
    }

    /// The ::popup signal is a
    /// [keybinding signal][GtkBindingSignal]
    /// which gets emitted to popup the combo box list.
    ///
    /// The default binding for this signal is Alt+Down.
    #[doc(alias = "popup")]
    fn connect_popup<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn popup_trampoline<P: IsA<ComboBox>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkComboBox,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(ComboBox::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"popup".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    popup_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    fn emit_popup(&self) {
        self.emit_by_name::<()>("popup", &[]);
    }

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

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

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

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

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

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

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

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

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

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

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

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

impl<O: IsA<ComboBox>> ComboBoxExt for O {}