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[DotGNU]Winforms control layout bug


From: Simon Guindon
Subject: [DotGNU]Winforms control layout bug
Date: Wed, 3 Nov 2004 21:02:14 -0500

Hey guys, this email is in response to my last one.
 
I spent another 4 or so hours trying to track down this layout bug, and I assembled a simple to try test case.
 
I'm looking for some feedback or insight on perhaps a solution.  I've tried to figure it out but a little lost.
 
The anchoring/sizing isn't happening properly.  The control is a UserControl, not derived directly from Control.
The Control is docked top, left and right.  This is an app from VS.NET.
 
PNET: http://home.sse.net/layoutbug1.jpg
.NET: http://home.sse.net/layoutbug2.jpg
 
The UserControl is anchoring properly, but child controls inside it, are not.
 
VS.NET designer is setting the form to suspend layout, then calling ResumeLayout(false) after the controls are added to the form.  But that means the controls are never getting PerformLayout() being called.  I'm not sure if this is the issue or not.  I was thinking of doing this.
 
If ResumeLayout(false) is called, but PerformLayout() has never been called, maybe its ok to call it?
 
I hope I'm making sense.  The problem is hard to explain, you really need to compile and try the test case to understand. I've really tried to solve this myself, but I'm stuck and I don't want to break or tear down PNET winforms performance from asking it to layout or draw too much.
 
Curious if I'm on the right track or totally off.
 
Included are the 2 files that need to be compiled to test it.  If you notice, the control itself is anchoring fine, but any child controls inside the UserControl are not.
 
Any help greatly appreciated!
 
Thanks,
Simon

Attachment: TestControl.cs
Description: Text document

Attachment: Form1.cs
Description: Text document


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