set_proxy_menu_item

Description:

public void set_proxy_menu_item (string menu_item_id, Widget menu_item)

Sets the MenuItem 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 get_proxy_menu_item.

this	a ToolItem
menu_item_id	a string used to identify `menu_item`
menu_item	a MenuItem to use in the overflow menu, or null