Attaches the menu to the widget and provides a callback function that will be invoked when the menu calls gtk_menu_detach() during its destruction.
the GtkWidget that the menu will be attached to.
the user supplied callback function that will be called when the menu calls gtk_menu_detach().
See Implementation
Attaches the menu to the widget and provides a callback function that will be invoked when the menu calls gtk_menu_detach() during its destruction.