Codejock Developer Community : Resize display issue of scroll bar http://forum.codejock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 14 May 2026 11:26:19 +0000 Fri, 11 Apr 2008 17:26:10 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 forum.codejock.com/RSS_post_feed.asp?TID=9570 <![CDATA[Codejock Developer Community]]> http://forum.codejock.com/forum_images/codejock-logo.gif http://forum.codejock.com/ <![CDATA[Resize display issue of scroll bar : Update: My change produced lots...]]> http://forum.codejock.com/forum_posts.asp?TID=9570&PID=33535&title=resize-display-issue-of-scroll-bar#33535 Author: rdhd
Subject: 9570
Posted: 11 April 2008 at 5:26pm

Update: My change produced lots and lots of flashing. I could briefly see all the controls display starting about halfway down the panel so that I was seeing "double".
 
I eventually tripped upon adding the SWP_NOCOPYBITS flag to the SetWindowPos call.
 
That took care of all the flashing I saw (and was originally trying to avoid using the no redraw call).
 
Things move much more smoothly (except on Vista but that's yet another post).
]]> Fri, 11 Apr 2008 17:26:10 +0000 http://forum.codejock.com/forum_posts.asp?TID=9570&PID=33535&title=resize-display-issue-of-scroll-bar#33535 <![CDATA[Resize display issue of scroll bar : ok :) ]]> http://forum.codejock.com/forum_posts.asp?TID=9570&PID=31170&title=resize-display-issue-of-scroll-bar#31170 Author: Oleg
Subject: 9570
Posted: 14 February 2008 at 1:06am

ok :)

]]> Thu, 14 Feb 2008 01:06:34 +0000 http://forum.codejock.com/forum_posts.asp?TID=9570&PID=31170&title=resize-display-issue-of-scroll-bar#31170 <![CDATA[Resize display issue of scroll bar : You are correct. When I called...]]> http://forum.codejock.com/forum_posts.asp?TID=9570&PID=31150&title=resize-display-issue-of-scroll-bar#31150 Author: rdhd
Subject: 9570
Posted: 13 February 2008 at 12:12pm

You are correct. When I called SetWindowPos, I was adding SWP_NOREDRAW to the flags argument.
 
I was doing that to both a dialog I have at the top of my docking pane and the task panel I have under the dialog.
 
I then called the Reposition(FALSE), Invalidate and UpdateWindow() on the task panel after the SetWindowPos calls. But the task panel doesn't seem to cause the scroll bars to redisplay.
 
So I removed the SWP_NOREDRAW flag and the calls to repostion, invalidate and update the window since I could not figure out how to force the scroll bar to redisplay.
 
The user can see a bit of flashing but when all is done the display is correct.
]]> Wed, 13 Feb 2008 12:12:29 +0000 http://forum.codejock.com/forum_posts.asp?TID=9570&PID=31150&title=resize-display-issue-of-scroll-bar#31150 <![CDATA[Resize display issue of scroll bar : Hi, Think its something in your...]]> http://forum.codejock.com/forum_posts.asp?TID=9570&PID=31137&title=resize-display-issue-of-scroll-bar#31137 Author: Oleg
Subject: 9570
Posted: 13 February 2008 at 1:16am

Hi,
Think its something in your code. I never saw same :(
]]> Wed, 13 Feb 2008 01:16:16 +0000 http://forum.codejock.com/forum_posts.asp?TID=9570&PID=31137&title=resize-display-issue-of-scroll-bar#31137 <![CDATA[Resize display issue of scroll bar : I have a task panel inside a docking...]]> http://forum.codejock.com/forum_posts.asp?TID=9570&PID=31119&title=resize-display-issue-of-scroll-bar#31119 Author: rdhd
Subject: 9570
Posted: 12 February 2008 at 4:56pm

I have a task panel inside a docking pane. It is hosted by the dialog inserted into the pane that is its parent window.
 
When the user resizes the docking pane to make it narrower, if the panel has a scroll bar, the display is not correct after the resize. My resizing is not constant (no update until I release the mouse).
 
In my dialog's (the parent) OnSize, I resize the taskpanel and then do the following:
 
m_TaskPanel.Reposition(FALSE);
m_TaskPanel.Invalidate();
m_TaskPanel.UpdateWindow();
 
I have tried passing TRUE to Reposition. I have also tried calling the panel's Redraw method.
 
When the panel is stretched, I have no issue but when it is made narrower, if the panel has a scroll bar, the area for the scroll bar is not refreshed correctly.
 
How do I have the panel update the scroll bar too?
 
I am adding an image. In the image on the left one can see the panel before resizing. The middle image is after the resize occurs. The blue "scroller" that one can click on to scroll is not realy there (note the missing "arrow" at the top of the scroll bar and part of the group header that appears where the arrow should be). That is, if I click on it and try to drag it nothing happens. I have to force the app to update the window (by swithing to another app and back) or resize again to be slightly larger for the display to correct itself. The image on the right is the display if I simply resize to be a pixel or two bigger (apparently any width increase fixes the issue).
 
]]> Tue, 12 Feb 2008 16:56:26 +0000 http://forum.codejock.com/forum_posts.asp?TID=9570&PID=31119&title=resize-display-issue-of-scroll-bar#31119