gboolean gdk_toplevel_show_window_menu ( GdkToplevel* toplevel, GdkEvent* event )
Asks the windowing system to show the window menu.
The window menu is the menu shown when right-clicking the titlebar on traditional windows managed by the window manager. This is useful for windows using client-side decorations, activating it with a right-click on the window decorations.
GdkEventto show the menu for.
The data is owned by the caller of the function.