Hi, Russell

I am pretty sure this happens only in VFP. I've also encountered another situation: I have a form open in Form Designer, doubleclick something to open the method code window, and, if the window has a vertical scrollbar, grab the scrollbar, scroll down it a little, stop the mouse but keep the mouse button pressed. That's it, the key point is to not release the mouse button. After few seconds (I don't know, maybe 3, maybe 5, something like that), the visible windows become white, no content is shown, and periodically some sort of _screen.refresh occurs. It looks like a timer code to me.

Never seen this behaviour in other applications, just in VFP.

Thanks.

>Yeah, that's my experience. I know that if I'd seen it in other apps, it would jump out at me as being a Windows issue and not VFP specific. Obviously, if you click and are moving the mouse and the upclick occurs outside the button, Windows won't recognize it. This is proper and by design. I haven't had any replies that specifically say that they are seeing the exact behavior that both of us are seeing and that I (and you) only see in VFP.
>
>>Hi, David
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>>Not exactly. I've seen the same problem, but I never encountered it in other application. MouseDown on X, MouseUp, nothing happens, but the X button remains down. Move mouse out (without clicking, just move it), button goes up. Move mouse back, button goes down. No mouse button is clicked during this. Just moving mouse in and out presses and depresses the x button.
>>
>>Never encountered this in other apps, just in VFP.
>>
>>