Widget.initTemplate

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 [gtk.widget_class.WidgetClass.setTemplate]

It is important to call this function in the instance initializer of a #GtkWidget subclass and not in #GObject.constructed() or #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 [gobject.object.ObjectWrap.new_] on a widget with composite templates, it’s important to build the composite widgets before the construct properties are set. Properties passed to [gobject.object.ObjectWrap.new_] should take precedence over properties set in the private template XML.