Deletes an item from a menu
void DeleteItem( const TCHAR* pszText ); void DeleteItem( int nPosition );
The text of the menu item, which may include an ampersand for a short-cut key.
The index of the item in the menu. Note that the index of the first item is 1.
Deletes an item from the menu, either by name or position.
This function may only be called after Create() has been called. It will have no effect if it is called before Create().