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Flicker free Form Painting

By , 23 Sep 2010
 
Recently i had found a solution for flicker free form loading in my project. Please use the following in designer class file.
 
protected override CreateParams CreateParams {
      get {
        CreateParams cp = base.CreateParams;
        cp.ExStyle |= 0x02000000;
        return cp;
      }
    }
 
To see it at work, minimize and restore the form and observe its painting behavior. Comment the cp.ExStyle assignment to see the difference. All you have to do to use this in your own form is to copy and paste the CreateParams property.

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About the Author

Syed Shabeer
Software Developer Rifluxyss softwares(P) Ltd
India India
A Software programmer in Rifluxyss Softwares(P) Ltd situated in Chennai. Works on VB.NET, C#, .NET Compact framework, SSIS, SQL Server, Sharepoint, PHP. Other than that likes to play games in PC.
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    Spacing  Noise  Layout  Per page   
GeneralReason for my vote of 5 this post work among all the solutio... PinmemberJeanPaul MENSAH12-Feb-11 5:50 
GeneralThanks a lot! i have been looking for this for 6 months ago!... PinmemberJeanPaul MENSAH12-Feb-11 5:46 
GeneralReason for my vote of 3 Ok, but a minimal explanation would ... PinmemberToli Cuturicu11-Oct-10 11:35 
QuestionA Question Pinmemberjohannesnestler24-Sep-10 2:27 
AnswerRe: A Question Pinmemberjohannesnestler5-Oct-10 5:03 
GeneralGeneral Info [modified] PinmemberSilic0re0923-Sep-10 4:02 
The flag is actually called WS_EX_COMPOSITED, and from the MSDN:
 
With WS_EX_COMPOSITED set, all descendants of a window get bottom-to-top painting order using double-buffering. Bottom-to-top painting order allows a descendent window to have translucency (alpha) and transparency (color-key) effects, but only if the descendent window also has the WS_EX_TRANSPARENT bit set. Double-buffering allows the window and its descendents to be painted without flicker.
 
BTW, this only works on Windows XP and higher.

modified on Thursday, September 23, 2010 10:25 AM

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