void gtk_widget_init_template ( GtkWidget* widget )
Creates and initializes child widgets defined in templates. This
function must be called in the instance initializer for any
class which assigned itself a template using
It is important to call this function in the instance initializer
GtkWidget subclass and not in
GObject.constructor() for two reasons.
One reason is that generally derived widgets will assume that parent class composite widgets have been created in their instance initializers.
Another reason is that when calling
g_object_new() on a widget with
composite templates, it’s important to build the composite widgets
before the construct properties are set. Properties passed to
should take precedence over properties set in the private template XML.