This should be called at class initialization time to specify
the GtkBuilder XML to be used to extend a widget.
For convenience, gtk_widget_class_set_template_from_resource() is also provided.
Note
Any class that installs templates must call gtk_widget_init_template()
in the widget's instance initializer
This should be called at class initialization time to specify the GtkBuilder XML to be used to extend a widget. For convenience, gtk_widget_class_set_template_from_resource() is also provided. Note Any class that installs templates must call gtk_widget_init_template() in the widget's instance initializer