Installs a shortcut in widget_class.
Every instance created for widget_class or its subclasses will
inherit this shortcut and trigger it.
Shortcuts added this way will be triggered in the %GTK_PHASE_BUBBLE phase, which means they may also trigger if child widgets have focus.
This function must only be used in class initialization functions otherwise it is not guaranteed that the shortcut will be installed.
Declares a callback_symbol to handle callback_name from
the template XML defined for widget_type.
This function is not supported after [methodGtk.WidgetClass.set_template_scope]
has been used on widget_class. See [methodGtk.BuilderCScope.add_callback_symbol].
Note that this must be called from a composite widget classes
class initializer after calling [methodGtk.WidgetClass.set_template].
The name of the callback as expected in the template XML
The callback symbol
Automatically assign an object declared in the class template XML to
be set to a location on a freshly built instance’s private data, or
alternatively accessible via [methodGtk.Widget.get_template_child].
The struct can point either into the public instance, then you should
use G_STRUCT_OFFSET(WidgetType, member) for struct_offset, or in the
private struct, then you should use G_PRIVATE_OFFSET(WidgetType, member).
An explicit strong reference will be held automatically for the duration
of your instance’s life cycle, it will be released automatically when
GObjectClass.dispose() runs on your instance and if a struct_offset
that is != 0 is specified, then the automatic location in your instance
public or private data will be set to %NULL. You can however access an
automated child pointer the first time your classes GObjectClass.dispose()
runs, or alternatively in [signalGtk.Widget::destroy].
If internal_child is specified, [vfuncGtk.Buildable.get_internal_child]
will be automatically implemented by the GtkWidget class so there is no
need to implement it manually.
The wrapper macros [funcGtk.widget_class_bind_template_child],
[funcGtk.widget_class_bind_template_child_internal],
[funcGtk.widget_class_bind_template_child_private] and
[funcGtk.widget_class_bind_template_child_internal_private]
might be more convenient to use.
Note that this must be called from a composite widget classes class
initializer after calling [methodGtk.WidgetClass.set_template].
The “id” of the child defined in the template XML
Whether the child should be accessible as an “internal-child” when this class is used in GtkBuilder XML
The structure offset into the composite widget’s instance public or private structure where the automated child pointer should be set, or 0 to not assign the pointer.
Retrieves the accessible role used by the given GtkWidget class.
Different accessible roles have different states, and are rendered differently by assistive technologies.
See also: [methodGtk.Accessible.get_accessible_role].
This should be called at class initialization time to specify actions to be added for all instances of this class.
Actions installed by this function are stateless. The only state they have is whether they are enabled or not.
a prefixed action name, such as "clipboard.paste"
the parameter type
callback to use when the action is activated
Installs an action called action_name on widget_class and
binds its state to the value of the property_name property.
This function will perform a few santity checks on the property selected
via property_name. Namely, the property must exist, must be readable,
writable and must not be construct-only. There are also restrictions
on the type of the given property, it must be boolean, int, unsigned int,
double or string. If any of these conditions are not met, a critical
warning will be printed and no action will be added.
The state type of the action matches the property type.
If the property is boolean, the action will have no parameter and toggle the property value. Otherwise, the action will have a parameter of the same type as the property.
name of the action
name of the property in instances of widget_class or any parent class.
Returns details about the index_-th action that has been
installed for widget_class during class initialization.
See [methodGtk.WidgetClass.install_action] for details on
how to install actions.
Note that this function will also return actions defined
by parent classes. You can identify those by looking
at owner.
Sets the accessible role used by the given GtkWidget class.
Different accessible roles have different states, and are rendered differently by assistive technologies.
the GtkAccessibleRole used by the widget_class
Sets the GtkWidgetClass.activate_signal field with the
given signal_id.
The signal will be emitted when calling [methodGtk.Widget.activate].
The signal_id must have been registered with g_signal_new()
or g_signal_newv() before calling this function.
the id for the activate signal
Sets the GtkWidgetClass.activate_signal field with the signal id for
the given signal_name.
The signal will be emitted when calling [methodGtk.Widget.activate].
The signal_name of widget_type must have been registered with
g_signal_new() or g_signal_newv() before calling this function.
the name of the activate signal of widget_type
Sets the type to be used for creating layout managers for
widgets of widget_class.
The given type must be a subtype of [classGtk.LayoutManager].
This function should only be called from class init functions of widgets.
The object type that implements the GtkLayoutManager for widget_class
This should be called at class initialization time to specify
the GtkBuilder XML to be used to extend a widget.
For convenience, [methodGtk.WidgetClass.set_template_from_resource]
is also provided.
Note that any class that installs templates must call
[methodGtk.Widget.init_template] in the widget’s instance initializer.
A GBytes holding the GtkBuilder XML
A convenience function that calls [methodGtk.WidgetClass.set_template]
with the contents of a GResource.
Note that any class that installs templates must call
[methodGtk.Widget.init_template] in the widget’s instance
initializer.
The name of the resource to load the template from
For use in language bindings, this will override the default
GtkBuilderScope to be used when parsing GtkBuilder XML from
this class’s template data.
Note that this must be called from a composite widget classes class
initializer after calling [methodGtkWidgetClass.set_template].
The GtkBuilderScope to use when loading the class template
The object class structure needs to be the first element in the widget class structure in order for the class mechanism to work correctly. This allows a GtkWidgetClass pointer to be cast to a GObjectClass pointer.