Hi David and Andrés,
Thank you so much, really appreciate all this help.
OK David I think you're saying Window's handle as in it belongs to the win op system? And it's a window's handle for the button itself?
Can you just confirm it should be OK to save all the object handles in eg ABC-WIN dialog's WINDOW-CREATED and that they remain constant until ABC-WIN is deleted? i.e. I can use callouts to my heart's content to control everything!?
Thanks again,
Linden