If menu_item_id matches the string passed to gtk.tool_item.ToolItem.setProxyMenuItem return the corresponding #GtkMenuItem.
Custom subclasses of #GtkToolItem should use this function to update their menu item when the #GtkToolItem changes. That the menu_item_ids must match ensures that a #GtkToolItem will not inadvertently change a menu item that they did not create.
a string used to identify the menu item
The #GtkMenuItem passed to gtk.tool_item.ToolItem.setProxyMenuItem, if the menu_item_ids match.
If menu_item_id matches the string passed to gtk.tool_item.ToolItem.setProxyMenuItem return the corresponding #GtkMenuItem.
Custom subclasses of #GtkToolItem should use this function to update their menu item when the #GtkToolItem changes. That the menu_item_ids must match ensures that a #GtkToolItem will not inadvertently change a menu item that they did not create.