Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I want to do a program that on notebook LCD show a controller of what we see on VGA output connector, it is possible to do that?

For instance, on LCD you can see a remote control (play, stop, volume) an on VGA you see the film without controls.

share|improve this question

migrated from Mar 17 '10 at 2:44

This question came from our site for professional and enthusiast programmers.

What Operating System are you using? – Andrew Bolster Mar 16 '10 at 12:49
I think I'll be using c# on windows platform – Santiago Mar 16 '10 at 13:21
Which Windows? XP? Vista? – Hugh Brackett Mar 16 '10 at 13:27
I suppose it needs saying that the notebook has to support dual monitors (hardware) and has to be running in dual monitor mode. The hardware seems pretty standard in business-class notebooks of recent vintage. – Hugh Brackett Mar 16 '10 at 13:37

Generally (in windows) go into your display properties and if you have a monitor plugges into the VGA port, you should be able to see two screens.

In modern OS's, when you plug in an external VGA device, it should prompt you for what to do with it.

share|improve this answer
Ok, so, I think I have to make 2 windows forms, one positioned on (x,y) (0,0) and the other positioned on (1024,0) on 1024x768 screen resolution and setting up an extended windows for 2 monitors. Thank you all. – Santiago Mar 16 '10 at 13:26

Setup multiple monitors via Windows (or whatever OS you're using); the { video card / video card driver / OS } may not support it though. I don't think there's a standard 'programming' answer though, i.e. I'm sure you could program the (suitably capable) video card directly, but that's probably silly.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.