[Pnet-developers] [bugs #9196] Layout of docked Controls not allways initialized

[Ansgar Lampe]

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 of the project: DotGNU Portable.NET.




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[bugs #9196] Full Item Snapshot:

URL: <http://savannah.gnu.org/bugs/?func=detailitem&item_id=9196>
Project: DotGNU Portable.NET
Submitted by: Ansgar Lampe
On: Wed 06/02/2004 at 21:18

Category:  None
Severity:  5 - Average
Item Group:  None
Resolution:  None
Assigned to:  None
Status:  Open


Summary:  Layout of docked Controls not allways initialized

Original Submission:  The layout of docked Controls is not allways initialized 
on dotGNU. My attached testcase shows the problem: Initially the Form shows in 
the lower left part only part of the layout... all layout is only shown after 
moving the horizontal Splitter.

As far as I found out till now, the Reason is that the Controls Handle is not 
yet created when the Child-Controls are added (whose handles don't exist as 
well). This causes on the one hand the Parent-Controls ControlCollections Add 
(Control) method, not to PerformLayout (on one of the last code lines before 
end of that function). On the other hand it stops the LayoutProcess at the 
beginning, because PerformLayout returns immidiately because IsHandleCreated 
returns false. 

For my understanding of the Control-Class code is not too good, I only suggest 
two ways to patch the problem and you may decide whether any of them is at 
least acceptable (both are extremely easy).

1. add a 'PerformLayout();' to OnHandleCreated (to line 4602)

2. remove both mentioned 'IsHandleCreated'-tests (lines 5450 and 2553) (which I 
don't really understand anyway)





File Attachments
-------------------

-------------------------------------------------------
Date: Wed 06/02/2004 at 21:18  Name: testcase.cs  Size: 4KB   By: zaldron
Move horizontal Splitter to see the wonder happen
http://savannah.gnu.org/bugs/download.php?item_id=9196&amp;item_file_id=1366






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