Virtual Device Driver

[yoon813]

What is Virtual Device Driver?

[vampyre]

A Device driver is a means of communication between an operating system and an output device,i.e. the screen. A virtual device driver is merely a way to output to devices without directly addressing the device. For windows, this means DC's, Device Contexts. Each window that displays graphics has a device context, and through these contexts you can actually see what windows draws for you. Windows provides numerous API functions to operate on DC's (just search on the net and you'll find something). Perhaps the best known is BitBlt. There's just too much to be told about DC's than I can explain here, but a few tutorials on any VB site can help you out. I hope this info was useful!