This method adds an item and its associated image to the image menu.
HRESULT Add( OLE_HANDLE hImage, OLE_HANDLE hImageMask, BSTR bstr, short wID, BOOL fBitmap );
NOERROR indicates success. E_INVALIDARG indicates that the argument is invalid. E_OUTOFMEMORY indicates that the device is out of memory.
Images may be either bitmaps or icons. If the images are bitmaps, a mask must also be supplied.