Codejock Developer Community : WS_EX_CONTROLPARENT on the task panel http://forum.codejock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Tue, 09 Jun 2026 16:12:51 +0000 Mon, 26 Jan 2009 02:10:25 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 forum.codejock.com/RSS_post_feed.asp?TID=13246 <![CDATA[Codejock Developer Community]]> http://forum.codejock.com/forum_images/codejock-logo.gif http://forum.codejock.com/ <![CDATA[WS_EX_CONTROLPARENT on the task panel : Hi, It depends on layout. Our...]]> http://forum.codejock.com/forum_posts.asp?TID=13246&PID=44883&title=ws-ex-controlparent-on-the-task-panel#44883 Author: Oleg
Subject: 13246
Posted: 26 January 2009 at 2:10am

Hi,
 
It depends on layout. Our Toolbox sample set WS_EX_CONTROLPARENT for MainFrame and Splitter for correct tab order.
]]> Mon, 26 Jan 2009 02:10:25 +0000 http://forum.codejock.com/forum_posts.asp?TID=13246&PID=44883&title=ws-ex-controlparent-on-the-task-panel#44883 <![CDATA[WS_EX_CONTROLPARENT on the task panel : Should WS_EX_CONTROLPARENT be...]]> http://forum.codejock.com/forum_posts.asp?TID=13246&PID=44857&title=ws-ex-controlparent-on-the-task-panel#44857 Author: rdhd
Subject: 13246
Posted: 23 January 2009 at 7:43pm

Should WS_EX_CONTROLPARENT be added to the task panel window?
 
I had lockups where adding that style fixed the lockup. But I now get a lockup if I remove the last group in the task panel. The problem seems to be the style is on the panel at the time CJ calls GetNextDlgTabItem when OnSetFocus is called on the task panel.
 
OnSetFocus is called when the task panel group item destructor runs and it calls ShowWindow(h, SW_HIDE). I assume since I had to make the dialog a child of the panel the OS is setting focus to the panel when the window is hidden (well that and the stack trace.)
 
Microsoft has sent me a rather lengthy explanation of the rules that have to be followed to avoid the lockup and one of them is to never set focus on "a control that has WS_EX_CONTROLPARENT" style on it. I asked if any window counts as a control and the answer is yes.
 
I have currently subclassed the panel to intercept OnSetFocus and route the call directly to the CWnd class.
]]> Fri, 23 Jan 2009 19:43:55 +0000 http://forum.codejock.com/forum_posts.asp?TID=13246&PID=44857&title=ws-ex-controlparent-on-the-task-panel#44857