Picture control? are you refering to a canvas control or Any other like a Bitmap blittted on Static or so??

Anyways, you've defined the function, and it seems Okay for me.... (I havent compiled)..

You should need to display the Tooltip, when a Mousehover is occured on the Picture('s) Control.. right?

If so, you should have to Call this function from the WM_MOUSEHOVER mesage handler of the Picture('s) Control