Hi Bo,

Thanks once again for this. I've tried your

nTLen = SendMessage_C(THISFORM.Title_Olecontrol1.hWnd, 1119, REPLICATE(CHR(0),8), 0)

approach and it seems much faster, and makes the form much more repsonsive. However, the number it returns is puzzling. It seems to bear no obvious relation to either the length of displayed text, or the length of the control source memo field

For an RTF control displaying 26 characters of text, and with a total (text+RTF tags etc) length of 379 characters, the above line gives nTLen=261.

I had a look on MSDN - does EM_GETTEXTLENGTHEX need a Unicode RTF control to work properly? Or is there another answer?

Cheers

John