FIX. RadForm - exception when showing maximized MDI children and there are other maximized windows already.

Declined

Last Updated: 14 Aug 2017 13:11 by ADMIN

ADMIN

Dimitar

Created on: 06 Mar 2017 07:13

Category: Form

Type: Bug Report

FIX. RadForm - exception when showing maximized MDI children and there are other maximized windows already.

To reproduce:
- Add 3 MDI child forms with a lot of gauges.
- Set their WindowState to maximized.
- Show each upon a button click.

Workaround:
Set the state of all forms to normal, before adding a new maximized form.

Attached Files:

MdiChildException.png

2 comments

ADMIN

Dimitar

Posted on: 20 Jun 2017 12:48

Detailed information is available here as well:  https://social.msdn.microsoft.com/Forums/vstudio/en-US/e5d0721e-166a-426f-adff-ef00c2f541e0/error-creating-window-handle-innerexception-object-reference-not-set-to-an-instance-of-an-object?forum=csharpgeneral

ADMIN

Peter

Posted on: 18 Apr 2017 14:48

Please take a look at the attached call stack. You can see that it does not have any reference to our methods. None of our methods are executed, this means that the issue cannot be solved at the level of our components. 
Also many internet threads https://www.google.bg/search?q=mdi+child+maximize+problem+c%23+exception+Error+creating+window+handle&gws_rd=cr&ei=DSf2WJDJGsq1a4DUutAC have mentioned the exact issue with maximized mdi child forms.

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