George,

Not to rain on the parade here, but, out of curiosity, I tried this code on my Windows2000 Professional box. If I DISKSPACE(tcDrive) and tcDrive does not exist, I get a return value of -1.

No errors, no mess. So what am I doing right (or wrong)?



>In light of or more of the recent threads in this area, here's a little something from the "Advisor Tips" section of FPA. As a side note, I find it interesting that Steve Sawyer is no longer the editor of this column.
>
>The title of this gem is "Determine if a Drive Exists". Without getting into any of the text, it has the following RETURN:

RETURN (DISKSPACE(tcDrive) > 0)

where tcDrive is the drive in question.
>
>Only one problem...under NT you get a nasty error dialog if SetErrorMode() isn't properly called (and later restored to it's original state) to disable it.
>
>Now if you're going to be mucking about with API anyway, then...

DECLARE INTEGER GetLogicalDrives IN Win32API
>RETURN BITTEST(GetLogicalDrives(), ASC(UPPER(tcDrive)) - 65)

>
>gets the job done very cleanly.
>
>Back in the January, 2000 issue, while Steve was still the Contributing Editor, there was a tip that synchronized the VFP _DBLCLICK system variable with the setting the user had established in the Control Panel:

DECLARE INTEGER GetDoubleClickTime IN Win32API
>_DBLCLICK = GetDoubleClickTime() / 1000