Sets the default #AtkRole to be set on accessibles created for
widgets of @widget_class. Accessibles may decide to not honor this
setting if their role reporting is more refined. Calls to
gtk_widget_class_set_accessible_type() will reset this value.
In cases where you want more fine-grained control over the role of
accessibles created for @widget_class, you should provide your own
accessible type and use gtk_widget_class_set_accessible_type()
instead.
If @role is #ATK_ROLE_INVALID, the default role will not be changed
and the accessible’s default role will be used instead.
This function should only be called from class init functions of widgets.
Sets the default #AtkRole to be set on accessibles created for widgets of @widget_class. Accessibles may decide to not honor this setting if their role reporting is more refined. Calls to gtk_widget_class_set_accessible_type() will reset this value.
In cases where you want more fine-grained control over the role of accessibles created for @widget_class, you should provide your own accessible type and use gtk_widget_class_set_accessible_type() instead.
If @role is #ATK_ROLE_INVALID, the default role will not be changed and the accessible’s default role will be used instead.
This function should only be called from class init functions of widgets.