WinForms controls are flickering when resizing on Windows7 x64

Question

This very strange.

When I resize a WinForms dialog the controls are flickering very bad, some of them are disappearing. It happens only when using the application under Windows 7 64.

You'll have to post repro code to help us really nail this down. Nothing to do with double-buffering of course. — Hans Passant, Aug 12 '10 at 23:23

score 2 · Accepted Answer · answered Aug 27 '10 at 09:29

2

The solution for my problem is listed here:

http://blogs.msdn.com/b/alejacma/archive/2008/11/20/controls-won-t-get-resized-once-the-nesting-hierarchy-of-windows-exceeds-a-certain-depth-x64.aspx

answered Aug 27 '10 at 09:29

Cornel

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Nice background info! - pretty interesting solution involving `BeginInvoke()`. – snemarch Aug 27 '10 at 09:51

score 1 · Answer 2 · edited May 23 '17 at 11:48

Double buffering is disabled in Windows Forms by default, and unfortunately you get this flickering issue as a result. It's a pain, but that's the way that it is. You may want to read the following, or provide some more information about your situation if these do not solve the problem.

score 0 · Answer 3 · answered Jul 05 '13 at 08:29

I had a similar problem with onResize event and I finally could fix it adding Invalidate():

protected override void OnResize(EventArgs e) {
 Invalidate();
 base.OnResize(e);

}

I know that redraw the screen each time the event happens is not the wished way to do it, but it worked for me.

WinForms controls are flickering when resizing on Windows7 x64

3 Answers3