Hi Alan,

>Is there an API call to change the screen resolution form 640x480 to 600x800 and back?

Check out my Struct.Zip here in the library. It contains a sample form to change the resolution programmatically. If the user hasn't enabled the "change resolution without rebooting" this can require a reboot. And it's usually not a good behavior of a WIndows application, to change the resolution, anyway.

Christof