install_action
Description:
[ CCode ( cname = "gtk_widget_class_install_action" ) ]
public class void install_action (string action_name, string? parameter_type, WidgetActionActivateFunc activate)
public class void install_action (string action_name, string? parameter_type, WidgetActionActivateFunc activate)
Adds an action for all instances of a widget class.
This function should be called at class initialization time.
Actions installed by this function are stateless. The only state they have is whether they are enabled or not (which can be changed with [ method@Gtk.Widget.action_set_enabled]).
Parameters:
| this |
a widget class |
| action_name |
a prefixed action name, such as "clipboard.paste" |
| parameter_type |
the parameter type |
| activate |
callback to use when the action is activated |