[ CCode ( cname = "dbusmenu_menuitem_about_to_show_cb" , instance_pos = 1.9 ) ]
public delegate void menuitem_about_to_show_cb (Menuitem mi)
Callback prototype for a callback that is called when the menu should be shown.
| mi |
Menu item that should be shown |
| user_data |
Extra user data sent with the function |