The menu control window procedure responds to this message by removing the identified item from the menu and setting sItemsLeft to the count of items in the menu after the item is deleted.
The difference between this message and MM_DELETEITEM is that MM_DELETEITEM destroys any submenu window, and deletes any bit map associated with the item, whereas MM_REMOVEITEM does not.
Note: It must be sent, not posted, to the menu control.