>Hi Hilmar,
>That sounds like my problem. I can't find anything about it in Windows. Any chance you know precisely where it is?
Note also that for a widely distributed program, you simply can't trust that events like Refresh() or Paint() fire only when the mouse button is released. You may have to adjust your program for this situation.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)