Class

GtkButton

Description [src]

class Gtk.Button : Gtk.Widget
  implements Gtk.Accessible, Gtk.Actionable, Gtk.Buildable, Gtk.ConstraintTarget {
  /* No available fields */
}

The GtkButton widget is generally used to trigger a callback function that is called when the button is pressed.

The GtkButton widget can hold any valid child widget. That is, it can hold almost any other standard GtkWidget. The most commonly used child is the GtkLabel.

Shortcuts and Gestures

The following signals have default keybindings:

GtkButton::activate

CSS nodes

GtkButton has a single CSS node with name button. The node will get the style classes .image-button or .text-button, if the content is just an image or label, respectively. It may also receive the .flat style class. When activating a button via the keyboard, the button will temporarily gain the .keyboard-activating style class.

Other style classes that are commonly used with GtkButton include .suggested-action and .destructive-action. In special cases, buttons can be made round by adding the .circular style class.

Button-like widgets like GtkToggleButton, GtkMenuButton, GtkVolumeButton, GtkLockButton, GtkColorButton or GtkFontButton use style classes such as .toggle, .popup, .scale, .lock, .color on the button node to differentiate themselves from a plain GtkButton.

Accessibility

GtkButton uses the GTK_ACCESSIBLE_ROLE_BUTTON role.

Hierarchy

Ancestors

Descendants

Implements

Constructors

gtk_button_new

Creates a new GtkButton widget.

gtk_button_new_from_icon_name

Creates a new button containing an icon from the current icon theme.

gtk_button_new_with_label

Creates a GtkButton widget with a GtkLabel child.

gtk_button_new_with_mnemonic

Creates a new GtkButton containing a label.

Instance methods

gtk_button_get_can_shrink

Retrieves whether the button can be smaller than the natural size of its contents.

since: 4.12

gtk_button_get_child

Gets the child widget of button.

gtk_button_get_has_frame

Returns whether the button has a frame.

gtk_button_get_icon_name

Returns the icon name of the button.

gtk_button_get_label

Fetches the text from the label of the button.

gtk_button_get_use_underline

Gets whether underlines are interpreted as mnemonics.

gtk_button_set_can_shrink

Sets whether the button size can be smaller than the natural size of its contents.

since: 4.12

gtk_button_set_child

Sets the child widget of button.

gtk_button_set_has_frame

Sets the style of the button.

gtk_button_set_icon_name

Adds a GtkImage with the given icon name as a child.

gtk_button_set_label

Sets the text of the label of the button to label.

gtk_button_set_use_underline

Sets whether to use underlines as mnemonics.

Methods inherited from GtkWidget (162)

Please see GtkWidget for a full list of methods.

Methods inherited from GObject (43)

Please see GObject for a full list of methods.

Methods inherited from GtkAccessible (19)

gtk_accessible_announce

Requests the user’s screen reader to announce the given message.

since: 4.14

gtk_accessible_get_accessible_parent

Retrieves the accessible parent for an accessible object.

since: 4.10

gtk_accessible_get_accessible_role

Retrieves the accessible role of an accessible object.

gtk_accessible_get_at_context

Retrieves the accessible implementation for the given GtkAccessible.

since: 4.10

gtk_accessible_get_bounds

Queries the coordinates and dimensions of this accessible.

since: 4.10

gtk_accessible_get_first_accessible_child

Retrieves the first accessible child of an accessible object.

since: 4.10

gtk_accessible_get_next_accessible_sibling

Retrieves the next accessible sibling of an accessible object.

since: 4.10

gtk_accessible_get_platform_state

Query a platform state, such as focus.

since: 4.10

gtk_accessible_reset_property

Resets the accessible property to its default value.

gtk_accessible_reset_relation

Resets the accessible relation to its default value.

gtk_accessible_reset_state

Resets the accessible state to its default value.

gtk_accessible_set_accessible_parent

Sets the parent and sibling of an accessible object.

since: 4.10

gtk_accessible_update_next_accessible_sibling

Updates the next accessible sibling of self.

since: 4.10

gtk_accessible_update_property

Updates a list of accessible properties.

gtk_accessible_update_property_value

Updates an array of accessible properties.

gtk_accessible_update_relation

Updates a list of accessible relations.

gtk_accessible_update_relation_value

Updates an array of accessible relations.

gtk_accessible_update_state

Updates a list of accessible states. See the GtkAccessibleState documentation for the value types of accessible states.

gtk_accessible_update_state_value

Updates an array of accessible states.

Methods inherited from GtkActionable (6)

gtk_actionable_get_action_name

Gets the action name for actionable.

gtk_actionable_get_action_target_value

Gets the current target value of actionable.

gtk_actionable_set_action_name

Specifies the name of the action with which this widget should be associated.

gtk_actionable_set_action_target

Sets the target of an actionable widget.

gtk_actionable_set_action_target_value

Sets the target value of an actionable widget.

gtk_actionable_set_detailed_action_name

Sets the action-name and associated string target value of an actionable widget.

Methods inherited from GtkBuildable (1)

gtk_buildable_get_buildable_id

Gets the ID of the buildable object.

Properties

Gtk.Button:can-shrink

Whether the size of the button can be made smaller than the natural size of its contents.

since: 4.12

Gtk.Button:child

The child widget.

Gtk.Button:has-frame

Whether the button has a frame.

Gtk.Button:icon-name

The name of the icon used to automatically populate the button.

Gtk.Button:label

Text of the label inside the button, if the button contains a label widget.

Gtk.Button:use-underline

If set, an underline in the text indicates that the following character is to be used as mnemonic.

Properties inherited from GtkWidget (34)

Gtk.Widget:can-focus

Whether the widget or any of its descendents can accept the input focus.

Gtk.Widget:can-target

Whether the widget can receive pointer events.

Gtk.Widget:css-classes

A list of css classes applied to this widget.

Gtk.Widget:css-name

The name of this widget in the CSS tree.

Gtk.Widget:cursor

The cursor used by widget.

Gtk.Widget:focus-on-click

Whether the widget should grab focus when it is clicked with the mouse.

Gtk.Widget:focusable

Whether this widget itself will accept the input focus.

Gtk.Widget:halign

How to distribute horizontal space if widget gets extra space.

Gtk.Widget:has-default

Whether the widget is the default widget.

Gtk.Widget:has-focus

Whether the widget has the input focus.

Gtk.Widget:has-tooltip

Enables or disables the emission of the ::query-tooltip signal on widget.

Gtk.Widget:height-request

Override for height request of the widget.

Gtk.Widget:hexpand

Whether to expand horizontally.

Gtk.Widget:hexpand-set

Whether to use the hexpand property.

Gtk.Widget:layout-manager

The GtkLayoutManager instance to use to compute the preferred size of the widget, and allocate its children.

Gtk.Widget:margin-bottom

Margin on bottom side of widget.

Gtk.Widget:margin-end

Margin on end of widget, horizontally.

Gtk.Widget:margin-start

Margin on start of widget, horizontally.

Gtk.Widget:margin-top

Margin on top side of widget.

Gtk.Widget:name

The name of the widget.

Gtk.Widget:opacity

The requested opacity of the widget.

Gtk.Widget:overflow

How content outside the widget’s content area is treated.

Gtk.Widget:parent

The parent widget of this widget.

Gtk.Widget:receives-default

Whether the widget will receive the default action when it is focused.

Gtk.Widget:root

The GtkRoot widget of the widget tree containing this widget.

Gtk.Widget:scale-factor

The scale factor of the widget.

Gtk.Widget:sensitive

Whether the widget responds to input.

Gtk.Widget:tooltip-markup

Sets the text of tooltip to be the given string, which is marked up with Pango markup.

Gtk.Widget:tooltip-text

Sets the text of tooltip to be the given string.

Gtk.Widget:valign

How to distribute vertical space if widget gets extra space.

Gtk.Widget:vexpand

Whether to expand vertically.

Gtk.Widget:vexpand-set

Whether to use the vexpand property.

Gtk.Widget:visible

Whether the widget is visible.

Gtk.Widget:width-request

Override for width request of the widget.

Properties inherited from GtkAccessible (1)

GtkAccessible:accessible-role

The accessible role of the given GtkAccessible implementation.

Properties inherited from GtkActionable (2)

GtkActionable:action-name

The name of the action with which this widget should be associated.

GtkActionable:action-target

The target value of the actionable widget’s action.

Signals

Gtk.Button::activate

Emitted to animate press then release.

Gtk.Button::clicked

Emitted when the button has been activated (pressed and released).

Signals inherited from GtkWidget (13)

GtkWidget::destroy

Signals that all holders of a reference to the widget should release the reference that they hold.

GtkWidget::direction-changed

Emitted when the text direction of a widget changes.

GtkWidget::hide

Emitted when widget is hidden.

GtkWidget::keynav-failed

Emitted if keyboard navigation fails.

GtkWidget::map

Emitted when widget is going to be mapped.

GtkWidget::mnemonic-activate

Emitted when a widget is activated via a mnemonic.

GtkWidget::move-focus

Emitted when the focus is moved.

GtkWidget::query-tooltip

Emitted when the widget’s tooltip is about to be shown.

GtkWidget::realize

Emitted when widget is associated with a GdkSurface.

GtkWidget::show

Emitted when widget is shown.

GtkWidget::state-flags-changed

Emitted when the widget state changes.

GtkWidget::unmap

Emitted when widget is going to be unmapped.

GtkWidget::unrealize

Emitted when the GdkSurface associated with widget is destroyed.

Signals inherited from GObject (1)

GObject::notify

The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.

Class structure

struct GtkButtonClass {
  GtkWidgetClass parent_class;
  void (* clicked) (
    GtkButton* button
  );
  void (* activate) (
    GtkButton* button
  );
  
}

No description available.

Class members

parent_class: GtkWidgetClass: The parent class.
clicked: void (* clicked) ( GtkButton* button ): Signal emitted when the button has been activated (pressed and released).
activate: void (* activate) ( GtkButton* button ): Signal that causes the button to animate press then release. Applications should never connect to this signal, but use the clicked signal.

Virtual methods

Gtk.ButtonClass.activate

Signal that causes the button to animate press then release. Applications should never connect to this signal, but use the clicked signal.

Gtk.ButtonClass.clicked

Signal emitted when the button has been activated (pressed and released).