Oh, I hadn't appreciated that you can't do normal Mouse polling as well as InForm's Mouse control. As you can use INKEY$ as well as __UI_KeyHit, I was assuming a similar thing for the Mouse.
My program requires sampling the cursor position continuously without any Click events, to get and use _MOUSEX & _MOUSEY. The only InForm Mouse procedures (?) are __UI_MouseUp/Down & __UI_MouseEnter/Leave. Am I allowed to sample _MOUSEINPUT and get _MOUSEX & _MOUSEY? What are __UI_MouseLeft & __UI_MouseTop? This would imply MouseWidth & MouseHeight???
Also, the program (as is) uses opposite Mouse Button Click for an Undo routine. Is this allowed in InForm (I don't see any Wiki on it)? If not allowed, I'd have to have another Button Control for Undo which would be acceptable.
Please forgive the level of ignorance! Richard