gtk4/auto/

check_button.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

#[cfg(feature = "v4_10")]
#[cfg_attr(docsrs, doc(cfg(feature = "v4_10")))]
use crate::Accessible;
use crate::{
    AccessibleRole, Actionable, Align, Buildable, ConstraintTarget, LayoutManager, Overflow,
    Widget, ffi,
};
use glib::{
    object::ObjectType as _,
    prelude::*,
    signal::{SignalHandlerId, connect_raw},
    translate::*,
};
use std::boxed::Box as Box_;

#[cfg(feature = "v4_10")]
#[cfg_attr(docsrs, doc(cfg(feature = "v4_10")))]
glib::wrapper! {
    /// Places a label next to an indicator.
    ///
    /// <picture>
    ///   <source srcset="check-button-dark.png" media="(prefers-color-scheme: dark)">
    ///   <img alt="Example GtkCheckButtons" src="check-button.png">
    /// </picture>
    ///
    /// A [`CheckButton`][crate::CheckButton] is created by calling either [`new()`][Self::new()]
    /// or [`with_label()`][Self::with_label()].
    ///
    /// The state of a [`CheckButton`][crate::CheckButton] can be set specifically using
    /// [`CheckButtonExt::set_active()`][crate::prelude::CheckButtonExt::set_active()], and retrieved using
    /// [`CheckButtonExt::is_active()`][crate::prelude::CheckButtonExt::is_active()].
    ///
    /// # Inconsistent state
    ///
    /// In addition to "on" and "off", check buttons can be an
    /// "in between" state that is neither on nor off. This can be used
    /// e.g. when the user has selected a range of elements (such as some
    /// text or spreadsheet cells) that are affected by a check button,
    /// and the current values in that range are inconsistent.
    ///
    /// To set a [`CheckButton`][crate::CheckButton] to inconsistent state, use
    /// [`CheckButtonExt::set_inconsistent()`][crate::prelude::CheckButtonExt::set_inconsistent()].
    ///
    /// # Grouping
    ///
    /// Check buttons can be grouped together, to form mutually exclusive
    /// groups - only one of the buttons can be toggled at a time, and toggling
    /// another one will switch the currently toggled one off.
    ///
    /// Grouped check buttons use a different indicator, and are commonly referred
    /// to as *radio buttons*.
    ///
    /// <picture>
    ///   <source srcset="radio-button-dark.png" media="(prefers-color-scheme: dark)">
    ///   <img alt="Example GtkRadioButtons" src="radio-button.png">
    /// </picture>
    ///
    /// To add a [`CheckButton`][crate::CheckButton] to a group, use [`CheckButtonExt::set_group()`][crate::prelude::CheckButtonExt::set_group()].
    ///
    /// When the code must keep track of the state of a group of radio buttons, it
    /// is recommended to keep track of such state through a stateful
    /// `GAction` with a target for each button. Using the `toggled` signals to keep
    /// track of the group changes and state is discouraged.
    ///
    /// # Shortcuts and Gestures
    ///
    /// [`CheckButton`][crate::CheckButton] supports the following keyboard shortcuts:
    ///
    /// - <kbd>␣</kbd> or <kbd>Enter</kbd> activates the button.
    ///
    /// # CSS nodes
    ///
    /// ```text
    /// checkbutton[.text-button][.grouped]
    /// ├── check
    /// ╰── [label]
    /// ```
    ///
    /// A [`CheckButton`][crate::CheckButton] has a main node with name checkbutton. If the
    /// [`label`][struct@crate::CheckButton#label] or [`child`][struct@crate::CheckButton#child]
    /// properties are set, it contains a child widget. The indicator node
    /// is named check when no group is set, and radio if the checkbutton
    /// is grouped together with other checkbuttons.
    ///
    /// # Accessibility
    ///
    /// [`CheckButton`][crate::CheckButton] uses the [enum@Gtk.AccessibleRole.checkbox] role.
    ///
    /// ## Properties
    ///
    ///
    /// #### `active`
    ///  If the check button is active.
    ///
    /// Setting `active` to [`true`] will add the `:checked:` state to both
    /// the check button and the indicator CSS node.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `child`
    ///  The child widget.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `group`
    ///  The check button whose group this widget belongs to.
    ///
    /// Writable
    ///
    ///
    /// #### `inconsistent`
    ///  If the check button is in an “in between” state.
    ///
    /// The inconsistent state only affects visual appearance,
    /// not the semantics of the button.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `label`
    ///  Text of the label inside the check button, if it contains a label widget.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `use-underline`
    ///  If set, an underline in the text indicates that the following
    /// character is to be used as mnemonic.
    ///
    /// Readable | Writable
    /// <details><summary><h4>Widget</h4></summary>
    ///
    ///
    /// #### `can-focus`
    ///  Whether the widget or any of its descendents can accept
    /// the input focus.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `can-target`
    ///  Whether the widget can receive pointer events.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `css-classes`
    ///  A list of css classes applied to this widget.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `css-name`
    ///  The name of this widget in the CSS tree.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    ///
    /// Readable | Writable | Construct Only
    ///
    ///
    /// #### `cursor`
    ///  The cursor used by @widget.
    ///
    /// 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.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `focusable`
    ///  Whether this widget itself will accept the input focus.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `halign`
    ///  How to distribute horizontal space if widget gets extra space.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `has-default`
    ///  Whether the widget is the default widget.
    ///
    /// Readable
    ///
    ///
    /// #### `has-focus`
    ///  Whether the widget has the input focus.
    ///
    /// Readable
    ///
    ///
    /// #### `has-tooltip`
    ///  Enables or disables the emission of the [`query-tooltip`][struct@crate::Widget#query-tooltip]
    /// signal on @widget.
    ///
    /// A true value 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.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `height-request`
    ///  Overrides for height request of the widget.
    ///
    /// If this is -1, the natural request will be used.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `hexpand`
    ///  Whether to expand horizontally.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `hexpand-set`
    ///  Whether to use the `hexpand` property.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `layout-manager`
    ///  The [`LayoutManager`][crate::LayoutManager] instance to use to compute
    /// the preferred size of the widget, and allocate its children.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `limit-events`
    ///  Makes this widget act like a modal dialog, with respect to
    /// event delivery.
    ///
    /// Global event controllers will not handle events with targets
    /// inside the widget, unless they are set up to ignore propagation
    /// limits. See [`EventControllerExt::set_propagation_limit()`][crate::prelude::EventControllerExt::set_propagation_limit()].
    ///
    /// 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-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`
    ///  The name of the widget.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `opacity`
    ///  The requested opacity of the widget.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `overflow`
    ///  How content outside the widget's content area is treated.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `parent`
    ///  The parent widget of this widget.
    ///
    /// Readable
    ///
    ///
    /// #### `receives-default`
    ///  Whether the widget will receive the default action when it is focused.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `root`
    ///  The [`Root`][crate::Root] widget of the widget tree containing this widget.
    ///
    /// This will be `NULL` if the widget is not contained in a root widget.
    ///
    /// Readable
    ///
    ///
    /// #### `scale-factor`
    ///  The scale factor of the widget.
    ///
    /// Readable
    ///
    ///
    /// #### `sensitive`
    ///  Whether the widget responds to input.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `tooltip-markup`
    ///  Sets the text of tooltip to be the given string, which is marked up
    /// with Pango markup.
    ///
    /// 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 `NULL`:
    /// [`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 `NULL`:
    /// [`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.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `vexpand`
    ///  Whether to expand vertically.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `vexpand-set`
    ///  Whether to use the `vexpand` property.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `visible`
    ///  Whether the widget is visible.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `width-request`
    ///  Overrides for width request of the widget.
    ///
    /// If this is -1, the natural request will be used.
    ///
    /// Readable | Writable
    /// </details>
    /// <details><summary><h4>Accessible</h4></summary>
    ///
    ///
    /// #### `accessible-role`
    ///  The accessible role of the given [`Accessible`][crate::Accessible] implementation.
    ///
    /// The accessible role cannot be changed once set.
    ///
    /// Readable | Writable
    /// </details>
    /// <details><summary><h4>Actionable</h4></summary>
    ///
    ///
    /// #### `action-name`
    ///  The name of the action with which this widget should be associated.
    ///
    /// Readable | Writable
    ///
    ///
    /// #### `action-target`
    ///  The target value of the actionable widget's action.
    ///
    /// Readable | Writable
    /// </details>
    ///
    /// ## Signals
    ///
    ///
    /// #### `activate`
    ///  Emitted to when the check button is activated.
    ///
    /// The `::activate` signal on [`CheckButton`][crate::CheckButton] is an action signal and
    /// emitting it causes the button to animate press then release.
    ///
    /// Applications should never connect to this signal, but use the
    /// [`toggled`][struct@crate::CheckButton#toggled] signal.
    ///
    /// The default bindings for this signal are all forms of the
    /// <kbd>␣</kbd> and <kbd>Enter</kbd> keys.
    ///
    /// Action
    ///
    ///
    /// #### `toggled`
    ///  Emitted when the buttons's [`active`][struct@crate::CheckButton#active]
    /// property changes.
    ///
    ///
    /// <details><summary><h4>Widget</h4></summary>
    ///
    ///
    /// #### `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.
    ///
    ///
    ///
    ///
    /// #### `direction-changed`
    ///  Emitted when the text direction of a widget changes.
    ///
    ///
    ///
    ///
    /// #### `hide`
    ///  Emitted when @widget is hidden.
    ///
    ///
    ///
    ///
    /// #### `keynav-failed`
    ///  Emitted if keyboard navigation fails.
    ///
    /// See [`WidgetExt::keynav_failed()`][crate::prelude::WidgetExt::keynav_failed()] for details.
    ///
    ///
    ///
    ///
    /// #### `map`
    ///  Emitted when @widget is going to be mapped.
    ///
    /// A widget is mapped when the widget is visible (which is controlled with
    /// [`visible`][struct@crate::Widget#visible]) and all its parents up to the toplevel widget
    /// are also visible.
    ///
    /// 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].
    ///
    ///
    ///
    ///
    /// #### `mnemonic-activate`
    ///  Emitted when a widget is activated via a mnemonic.
    ///
    /// The default handler for this signal activates @widget if @group_cycling
    /// is false, or just makes @widget grab focus if @group_cycling is true.
    ///
    ///
    ///
    ///
    /// #### `move-focus`
    ///  Emitted when the focus is moved.
    ///
    /// The `::move-focus` signal is a [keybinding signal](class.SignalAction.html).
    ///
    /// The default bindings for this signal are <kbd>Tab</kbd> to move forward,
    /// and <kbd>Shift</kbd>+<kbd>Tab</kbd> to move backward.
    ///
    /// Action
    ///
    ///
    /// #### `query-tooltip`
    ///  Emitted when the widget’s tooltip is about to be shown.
    ///
    /// This happens when the [`has-tooltip`][struct@crate::Widget#has-tooltip] property
    /// 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`
    ///  Emitted when @widget is associated with a [`gdk::Surface`][crate::gdk::Surface].
    ///
    /// This 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).
    ///
    ///
    ///
    ///
    /// #### `show`
    ///  Emitted when @widget is shown.
    ///
    ///
    ///
    ///
    /// #### `state-flags-changed`
    ///  Emitted when the widget state changes.
    ///
    /// See [`WidgetExt::state_flags()`][crate::prelude::WidgetExt::state_flags()].
    ///
    ///
    ///
    ///
    /// #### `unmap`
    ///  Emitted when @widget is going to be unmapped.
    ///
    /// A widget is unmapped when 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.
    ///
    ///
    ///
    ///
    /// #### `unrealize`
    ///  Emitted when the [`gdk::Surface`][crate::gdk::Surface] associated with @widget is destroyed.
    ///
    /// This 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).
    ///
    ///
    /// </details>
    ///
    /// # Implements
    ///
    /// [`CheckButtonExt`][trait@crate::prelude::CheckButtonExt], [`WidgetExt`][trait@crate::prelude::WidgetExt], [`trait@glib::ObjectExt`], [`AccessibleExt`][trait@crate::prelude::AccessibleExt], [`BuildableExt`][trait@crate::prelude::BuildableExt], [`ConstraintTargetExt`][trait@crate::prelude::ConstraintTargetExt], [`ActionableExt`][trait@crate::prelude::ActionableExt], [`WidgetExtManual`][trait@crate::prelude::WidgetExtManual], [`AccessibleExtManual`][trait@crate::prelude::AccessibleExtManual], [`ActionableExtManual`][trait@crate::prelude::ActionableExtManual]
    #[doc(alias = "GtkCheckButton")]
    pub struct CheckButton(Object<ffi::GtkCheckButton, ffi::GtkCheckButtonClass>) @extends Widget, @implements Accessible, Buildable, ConstraintTarget, Actionable;

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

#[cfg(not(feature = "v4_10"))]
glib::wrapper! {
    #[doc(alias = "GtkCheckButton")]
    pub struct CheckButton(Object<ffi::GtkCheckButton, ffi::GtkCheckButtonClass>) @extends Widget, @implements Buildable, ConstraintTarget, Actionable;

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

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

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

    /// Creates a new [`CheckButton`][crate::CheckButton] with the given text.
    /// ## `label`
    /// the text for the check button.
    ///
    /// # Returns
    ///
    /// a new [`CheckButton`][crate::CheckButton]
    #[doc(alias = "gtk_check_button_new_with_label")]
    #[doc(alias = "new_with_label")]
    pub fn with_label(label: &str) -> CheckButton {
        assert_initialized_main_thread!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_check_button_new_with_label(label.to_glib_none().0))
                .unsafe_cast()
        }
    }

    /// Creates a new [`CheckButton`][crate::CheckButton] with the given text and a mnemonic.
    /// ## `label`
    /// The text of the button, with an underscore
    ///   in front of the mnemonic character
    ///
    /// # Returns
    ///
    /// a new [`CheckButton`][crate::CheckButton]
    #[doc(alias = "gtk_check_button_new_with_mnemonic")]
    #[doc(alias = "new_with_mnemonic")]
    pub fn with_mnemonic(label: &str) -> CheckButton {
        assert_initialized_main_thread!();
        unsafe {
            Widget::from_glib_none(ffi::gtk_check_button_new_with_mnemonic(
                label.to_glib_none().0,
            ))
            .unsafe_cast()
        }
    }

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

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

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

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

    /// If the check button is active.
    ///
    /// Setting `active` to [`true`] will add the `:checked:` state to both
    /// the check button and the indicator CSS node.
    pub fn active(self, active: bool) -> Self {
        Self {
            builder: self.builder.property("active", active),
        }
    }

    /// The child widget.
    #[cfg(feature = "v4_8")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_8")))]
    pub fn child(self, child: &impl IsA<Widget>) -> Self {
        Self {
            builder: self.builder.property("child", child.clone().upcast()),
        }
    }

    /// The check button whose group this widget belongs to.
    pub fn group(self, group: &impl IsA<CheckButton>) -> Self {
        Self {
            builder: self.builder.property("group", group.clone().upcast()),
        }
    }

    /// If the check button is in an “in between” state.
    ///
    /// The inconsistent state only affects visual appearance,
    /// not the semantics of the button.
    pub fn inconsistent(self, inconsistent: bool) -> Self {
        Self {
            builder: self.builder.property("inconsistent", inconsistent),
        }
    }

    /// Text of the label inside the check button, if it contains a label widget.
    pub fn label(self, label: impl Into<glib::GString>) -> Self {
        Self {
            builder: self.builder.property("label", label.into()),
        }
    }

    /// If set, an underline in the text indicates that the following
    /// character is to be used as mnemonic.
    pub fn use_underline(self, use_underline: bool) -> Self {
        Self {
            builder: self.builder.property("use-underline", use_underline),
        }
    }

    /// Whether the widget or any of its descendents can accept
    /// the input focus.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    pub fn can_focus(self, can_focus: bool) -> Self {
        Self {
            builder: self.builder.property("can-focus", can_focus),
        }
    }

    /// Whether the widget can receive pointer events.
    pub fn can_target(self, can_target: bool) -> Self {
        Self {
            builder: self.builder.property("can-target", can_target),
        }
    }

    /// A list of css classes applied to this widget.
    pub fn css_classes(self, css_classes: impl Into<glib::StrV>) -> Self {
        Self {
            builder: self.builder.property("css-classes", css_classes.into()),
        }
    }

    /// The name of this widget in the CSS tree.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    pub fn css_name(self, css_name: impl Into<glib::GString>) -> Self {
        Self {
            builder: self.builder.property("css-name", css_name.into()),
        }
    }

    /// The cursor used by @widget.
    pub fn cursor(self, cursor: &gdk::Cursor) -> Self {
        Self {
            builder: self.builder.property("cursor", cursor.clone()),
        }
    }

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

    /// Whether this widget itself will accept the input focus.
    pub fn focusable(self, focusable: bool) -> Self {
        Self {
            builder: self.builder.property("focusable", focusable),
        }
    }

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

    /// Enables or disables the emission of the [`query-tooltip`][struct@crate::Widget#query-tooltip]
    /// signal on @widget.
    ///
    /// A true value 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.
    pub fn has_tooltip(self, has_tooltip: bool) -> Self {
        Self {
            builder: self.builder.property("has-tooltip", has_tooltip),
        }
    }

    /// Overrides for height request of the widget.
    ///
    /// If this is -1, the natural request will be used.
    pub fn height_request(self, height_request: i32) -> Self {
        Self {
            builder: self.builder.property("height-request", height_request),
        }
    }

    /// Whether to expand horizontally.
    pub fn hexpand(self, hexpand: bool) -> Self {
        Self {
            builder: self.builder.property("hexpand", hexpand),
        }
    }

    /// Whether to use the `hexpand` property.
    pub fn hexpand_set(self, hexpand_set: bool) -> Self {
        Self {
            builder: self.builder.property("hexpand-set", hexpand_set),
        }
    }

    /// The [`LayoutManager`][crate::LayoutManager] instance to use to compute
    /// the preferred size of the widget, and allocate its children.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    pub fn layout_manager(self, layout_manager: &impl IsA<LayoutManager>) -> Self {
        Self {
            builder: self
                .builder
                .property("layout-manager", layout_manager.clone().upcast()),
        }
    }

    /// Makes this widget act like a modal dialog, with respect to
    /// event delivery.
    ///
    /// Global event controllers will not handle events with targets
    /// inside the widget, unless they are set up to ignore propagation
    /// limits. See [`EventControllerExt::set_propagation_limit()`][crate::prelude::EventControllerExt::set_propagation_limit()].
    #[cfg(feature = "v4_18")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_18")))]
    pub fn limit_events(self, limit_events: bool) -> Self {
        Self {
            builder: self.builder.property("limit-events", limit_events),
        }
    }

    /// 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),
        }
    }

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

    /// The requested opacity of the widget.
    pub fn opacity(self, opacity: f64) -> Self {
        Self {
            builder: self.builder.property("opacity", opacity),
        }
    }

    /// How content outside the widget's content area is treated.
    ///
    /// This property is meant to be set by widget implementations,
    /// typically in their instance init function.
    pub fn overflow(self, overflow: Overflow) -> Self {
        Self {
            builder: self.builder.property("overflow", overflow),
        }
    }

    /// Whether the widget will receive the default action when it is focused.
    pub fn receives_default(self, receives_default: bool) -> Self {
        Self {
            builder: self.builder.property("receives-default", receives_default),
        }
    }

    /// Whether the widget responds to input.
    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 Pango markup.
    ///
    /// 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 `NULL`:
    /// [`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 `NULL`:
    /// [`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.
    pub fn valign(self, valign: Align) -> Self {
        Self {
            builder: self.builder.property("valign", valign),
        }
    }

    /// Whether to expand vertically.
    pub fn vexpand(self, vexpand: bool) -> Self {
        Self {
            builder: self.builder.property("vexpand", vexpand),
        }
    }

    /// Whether to use the `vexpand` property.
    pub fn vexpand_set(self, vexpand_set: bool) -> Self {
        Self {
            builder: self.builder.property("vexpand-set", vexpand_set),
        }
    }

    /// Whether the widget is visible.
    pub fn visible(self, visible: bool) -> Self {
        Self {
            builder: self.builder.property("visible", visible),
        }
    }

    /// Overrides for width request of the widget.
    ///
    /// If this is -1, the natural request will be used.
    pub fn width_request(self, width_request: i32) -> Self {
        Self {
            builder: self.builder.property("width-request", width_request),
        }
    }

    /// The accessible role of the given [`Accessible`][crate::Accessible] implementation.
    ///
    /// The accessible role cannot be changed once set.
    pub fn accessible_role(self, accessible_role: AccessibleRole) -> Self {
        Self {
            builder: self.builder.property("accessible-role", accessible_role),
        }
    }

    /// The name of the action with which this widget should be associated.
    pub fn action_name(self, action_name: impl Into<glib::GString>) -> Self {
        Self {
            builder: self.builder.property("action-name", action_name.into()),
        }
    }

    /// The target value of the actionable widget's action.
    pub fn action_target(self, action_target: &glib::Variant) -> Self {
        Self {
            builder: self
                .builder
                .property("action-target", action_target.clone()),
        }
    }

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

/// Trait containing all [`struct@CheckButton`] methods.
///
/// # Implementors
///
/// [`CheckButton`][struct@crate::CheckButton]
pub trait CheckButtonExt: IsA<CheckButton> + 'static {
    /// Returns whether the check button is active.
    ///
    /// # Returns
    ///
    /// whether the check button is active
    #[doc(alias = "gtk_check_button_get_active")]
    #[doc(alias = "get_active")]
    #[doc(alias = "active")]
    fn is_active(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_check_button_get_active(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Gets the child widget of @self or `NULL` if [`label`][struct@crate::CheckButton#label] is set.
    ///
    /// # Returns
    ///
    /// the child widget of @self
    #[cfg(feature = "v4_8")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_8")))]
    #[doc(alias = "gtk_check_button_get_child")]
    #[doc(alias = "get_child")]
    fn child(&self) -> Option<Widget> {
        unsafe {
            from_glib_none(ffi::gtk_check_button_get_child(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns whether the check button is in an inconsistent state.
    ///
    /// # Returns
    ///
    /// [`true`] if @self is currently in an inconsistent state
    #[doc(alias = "gtk_check_button_get_inconsistent")]
    #[doc(alias = "get_inconsistent")]
    #[doc(alias = "inconsistent")]
    fn is_inconsistent(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_check_button_get_inconsistent(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns the label of the check button or `NULL` if [`child`][struct@crate::CheckButton#child] is set.
    ///
    /// # Returns
    ///
    /// The label @self shows next
    ///   to the indicator. If no label is shown, [`None`] will be returned.
    #[doc(alias = "gtk_check_button_get_label")]
    #[doc(alias = "get_label")]
    fn label(&self) -> Option<glib::GString> {
        unsafe {
            from_glib_none(ffi::gtk_check_button_get_label(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Returns whether underlines in the label indicate mnemonics.
    ///
    /// # Returns
    ///
    /// The value of the [`use-underline`][struct@crate::CheckButton#use-underline] property.
    ///   See [`set_use_underline()`][Self::set_use_underline()] for details on how to set
    ///   a new value.
    #[doc(alias = "gtk_check_button_get_use_underline")]
    #[doc(alias = "get_use_underline")]
    #[doc(alias = "use-underline")]
    fn uses_underline(&self) -> bool {
        unsafe {
            from_glib(ffi::gtk_check_button_get_use_underline(
                self.as_ref().to_glib_none().0,
            ))
        }
    }

    /// Changes the check buttons active state.
    /// ## `setting`
    /// the new value to set
    #[doc(alias = "gtk_check_button_set_active")]
    #[doc(alias = "active")]
    fn set_active(&self, setting: bool) {
        unsafe {
            ffi::gtk_check_button_set_active(self.as_ref().to_glib_none().0, setting.into_glib());
        }
    }

    /// Sets the child widget of @self.
    ///
    /// Note that by using this API, you take full responsibility for setting
    /// up the proper accessibility label and description information for @self.
    /// Most likely, you'll either set the accessibility label or description
    /// for @self explicitly, or you'll set a labelled-by or described-by
    /// relations from @child to @self.
    /// ## `child`
    /// the child widget
    #[cfg(feature = "v4_8")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_8")))]
    #[doc(alias = "gtk_check_button_set_child")]
    #[doc(alias = "child")]
    fn set_child(&self, child: Option<&impl IsA<Widget>>) {
        unsafe {
            ffi::gtk_check_button_set_child(
                self.as_ref().to_glib_none().0,
                child.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    /// Adds @self to the group of @group.
    ///
    /// In a group of multiple check buttons, only one button can be active
    /// at a time. The behavior of a checkbutton in a group is also commonly
    /// known as a *radio button*.
    ///
    /// Setting the group of a check button also changes the css name of the
    /// indicator widget's CSS node to 'radio'.
    ///
    /// Setting up groups in a cycle leads to undefined behavior.
    ///
    /// Note that the same effect can be achieved via the [`Actionable`][crate::Actionable]
    /// API, by using the same action with parameter type and state type 's'
    /// for all buttons in the group, and giving each button its own target
    /// value.
    /// ## `group`
    /// another [`CheckButton`][crate::CheckButton] to
    ///   form a group with
    #[doc(alias = "gtk_check_button_set_group")]
    #[doc(alias = "group")]
    fn set_group(&self, group: Option<&impl IsA<CheckButton>>) {
        unsafe {
            ffi::gtk_check_button_set_group(
                self.as_ref().to_glib_none().0,
                group.map(|p| p.as_ref()).to_glib_none().0,
            );
        }
    }

    /// Sets the [`CheckButton`][crate::CheckButton] to inconsistent state.
    ///
    /// You should turn off the inconsistent state again if the user checks
    /// the check button. This has to be done manually.
    /// ## `inconsistent`
    /// [`true`] if state is inconsistent
    #[doc(alias = "gtk_check_button_set_inconsistent")]
    #[doc(alias = "inconsistent")]
    fn set_inconsistent(&self, inconsistent: bool) {
        unsafe {
            ffi::gtk_check_button_set_inconsistent(
                self.as_ref().to_glib_none().0,
                inconsistent.into_glib(),
            );
        }
    }

    /// Sets the text of @self.
    ///
    /// If [`use-underline`][struct@crate::CheckButton#use-underline] is [`true`], an underscore
    /// in @label is interpreted as mnemonic indicator, see
    /// [`set_use_underline()`][Self::set_use_underline()] for details on this behavior.
    /// ## `label`
    /// The text shown next to the indicator, or [`None`]
    ///   to show no text
    #[doc(alias = "gtk_check_button_set_label")]
    #[doc(alias = "label")]
    fn set_label(&self, label: Option<&str>) {
        unsafe {
            ffi::gtk_check_button_set_label(self.as_ref().to_glib_none().0, label.to_glib_none().0);
        }
    }

    /// Sets whether underlines in the label indicate mnemonics.
    ///
    /// If @setting is [`true`], an underscore character in @self's label
    /// indicates a mnemonic accelerator key. This behavior is similar
    /// to [`use-underline`][struct@crate::Label#use-underline].
    /// ## `setting`
    /// the new value to set
    #[doc(alias = "gtk_check_button_set_use_underline")]
    #[doc(alias = "use-underline")]
    fn set_use_underline(&self, setting: bool) {
        unsafe {
            ffi::gtk_check_button_set_use_underline(
                self.as_ref().to_glib_none().0,
                setting.into_glib(),
            );
        }
    }

    /// Emitted to when the check button is activated.
    ///
    /// The `::activate` signal on [`CheckButton`][crate::CheckButton] is an action signal and
    /// emitting it causes the button to animate press then release.
    ///
    /// Applications should never connect to this signal, but use the
    /// [`toggled`][struct@crate::CheckButton#toggled] signal.
    ///
    /// The default bindings for this signal are all forms of the
    /// <kbd>␣</kbd> and <kbd>Enter</kbd> keys.
    #[cfg(feature = "v4_2")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_2")))]
    #[doc(alias = "activate")]
    fn connect_activate<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn activate_trampoline<P: IsA<CheckButton>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkCheckButton,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(CheckButton::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"activate".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    activate_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[cfg(feature = "v4_2")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_2")))]
    fn emit_activate(&self) {
        self.emit_by_name::<()>("activate", &[]);
    }

    /// Emitted when the buttons's [`active`][struct@crate::CheckButton#active]
    /// property changes.
    #[doc(alias = "toggled")]
    fn connect_toggled<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn toggled_trampoline<P: IsA<CheckButton>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkCheckButton,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(CheckButton::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"toggled".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    toggled_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

    #[doc(alias = "active")]
    fn connect_active_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_active_trampoline<P: IsA<CheckButton>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkCheckButton,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(CheckButton::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),
            )
        }
    }

    #[cfg(feature = "v4_8")]
    #[cfg_attr(docsrs, doc(cfg(feature = "v4_8")))]
    #[doc(alias = "child")]
    fn connect_child_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn notify_child_trampoline<P: IsA<CheckButton>, F: Fn(&P) + 'static>(
            this: *mut ffi::GtkCheckButton,
            _param_spec: glib::ffi::gpointer,
            f: glib::ffi::gpointer,
        ) {
            unsafe {
                let f: &F = &*(f as *const F);
                f(CheckButton::from_glib_borrow(this).unsafe_cast_ref())
            }
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                c"notify::child".as_ptr(),
                Some(std::mem::transmute::<*const (), unsafe extern "C" fn()>(
                    notify_child_trampoline::<Self, F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }

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

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

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

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

impl<O: IsA<CheckButton>> CheckButtonExt for O {}