Sets the #GtkMenuItem used in the toolbar overflow menu. The @menu_item_id is used to identify the caller of this function and should also be used with gtk_tool_item_get_proxy_menu_item().
See also #GtkToolItem::create-menu-proxy.
a string used to identify @menu_item
a #GtkMenuItem to use in the overflow menu, or %NULL
2.4
See Implementation
Sets the #GtkMenuItem used in the toolbar overflow menu. The @menu_item_id is used to identify the caller of this function and should also be used with gtk_tool_item_get_proxy_menu_item().
See also #GtkToolItem::create-menu-proxy.