Warning
gtk_widget_set_composite_name has been deprecated since version 3.10 and should not be used in newly-written code. Use gtk_widget_class_set_template(), or don't use this API at all.
Sets a widgets composite name. The widget must be
a composite child of its parent; see gtk_widget_push_composite_child().
Warning gtk_widget_set_composite_name has been deprecated since version 3.10 and should not be used in newly-written code. Use gtk_widget_class_set_template(), or don't use this API at all. Sets a widgets composite name. The widget must be a composite child of its parent; see gtk_widget_push_composite_child().