THere are no references to such function in MSDN. So, probably it's not a Win32 API function.

But the error may come from the video driver. Suggest your client to change it and see if the error disappears.

Vlad

>A client is getting an error message. Gendisplaymask. API call caused an exception. Unexpected system error has occured. This message doesn't always occur. Nor does it appear in the same place. I can't repeat it on my computer. I'm using Codemine. I'm not certain if it's a Codemine, VFP, or Windows error. Has anyone had this error? Any suggestions on how to fix it?
>
>TIA