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6.8

Programmatically Disable Video Acceleration

Asked by Beasto in Windows Programming

Tags: acceleration, programmatically, video, disable

Hi. I have developed an app that performs Screen Capture, and on 'weaker' video cards/drivers this causes the mouse pointer response to become very jerky. I have read elsewhere that this is because weaker drivers are heavily optimised towards BLTing TO display memory, but not from it. Anyway, I have discovered that disabling the Video Acceleration completly resolves my problem .. ie. display properties->settings->advanced->Troubleshooting, and slide the bar completely to the left. What I am hoping, is if someone knows (or can figure out) how to programatically acheive the same result? I would much rather disable the acceration when my app starts and then restore the previous value upon exit, than advising users that they 'need' to disable it themselves ..

I have spent quite some time trying to figure this out .. I even went to the lenth of opening the display applet within my process and attempting to stop it from displaying, in the hope that i m ight be able to control it with simulated input .. but it was taking too much time to achieve little result, and I had to admit defeat.

I did come across an app that claimed to be able to do this, but I cant for the life of me find it again.

I need to be able to do this on all windows versions including and after win95, NT4

Can someone save the day?
[+][-]09/28/03 09:46 PM, ID: 9449058Accepted Solution

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About this solution

Zone: Windows Programming
Tags: acceleration, programmatically, video, disable
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Solution Provided By: adg
Participating Experts: 3
Solution Grade: A
 
[+][-]07/29/03 01:31 AM, ID: 9026238Expert Comment

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[+][-]07/30/03 12:50 AM, ID: 9034504Expert Comment

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[+][-]08/03/03 04:50 PM, ID: 9063456Expert Comment

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