Codejock Developer Community : Pane redraw doubt! http://forum.codejock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 13 Jun 2026 10:02:37 +0000 Tue, 07 Oct 2008 02:34:59 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 forum.codejock.com/RSS_post_feed.asp?TID=12287 <![CDATA[Codejock Developer Community]]> http://forum.codejock.com/forum_images/codejock-logo.gif http://forum.codejock.com/ <![CDATA[Pane redraw doubt! : Should be, but not possible. CS_SAVEBITS...]]> http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41701&title=pane-redraw-doubt#41701 Author: Oleg
Subject: 12287
Posted: 07 October 2008 at 2:34am

Should be, but not possible. CS_SAVEBITS can't be applied for Child windows.
Use cashed bitmap and it will save time to redraw whole window.
 
 
Closed.
]]> Tue, 07 Oct 2008 02:34:59 +0000 http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41701&title=pane-redraw-doubt#41701 <![CDATA[Pane redraw doubt! : CS_SAVEBITS is style for Top Level...]]> http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41682&title=pane-redraw-doubt#41682 Author: znakeeye
Subject: 12287
Posted: 06 October 2008 at 12:04pm

CS_SAVEBITS is style for Top Level windows only.
 
Disagree. I think it should be possible to set this style of all panes, just like you do in MFC. Why not add this?
 
More info about this peculiar class style:
http://blogs.msdn.com/oldnewthing/archive/2006/04/28/586018.aspx
]]> Mon, 06 Oct 2008 12:04:43 +0000 http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41682&title=pane-redraw-doubt#41682 <![CDATA[Pane redraw doubt! : your Pane is standard Window....]]> http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41652&title=pane-redraw-doubt#41652 Author: Oleg
Subject: 12287
Posted: 06 October 2008 at 2:34am

your Pane is standard Window. Each window receives WM_PAINT if its content was invalidated. ]]> Mon, 06 Oct 2008 02:34:52 +0000 http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41652&title=pane-redraw-doubt#41652 <![CDATA[Pane redraw doubt! : I have a cached bitmap. The problem...]]> http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41613&title=pane-redraw-doubt#41613 Author: znakeeye
Subject: 12287
Posted: 03 October 2008 at 4:59am

I have a cached bitmap. The problem is I have to StretchBlt it...
 
Is there no other way to prevent the pane from being redrawn?
]]> Fri, 03 Oct 2008 04:59:29 +0000 http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41613&title=pane-redraw-doubt#41613 <![CDATA[Pane redraw doubt! : btw... I very recommend use cashed...]]> http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41607&title=pane-redraw-doubt#41607 Author: Oleg
Subject: 12287
Posted: 03 October 2008 at 1:49am

btw... I very recommend use cashed bitmap if you need draw a lot of stuff.
 
See CXTPReportControl::OnPaint() method - if nothing was changed its just print saved m_bmpCache.
]]> Fri, 03 Oct 2008 01:49:59 +0000 http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41607&title=pane-redraw-doubt#41607 <![CDATA[Pane redraw doubt! : Hi, CS_SAVEBITS is style for...]]> http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41606&title=pane-redraw-doubt#41606 Author: Oleg
Subject: 12287
Posted: 03 October 2008 at 1:47am

Hi,
CS_SAVEBITS is style for Top Level windows only. Don't apply it for Child windows.
]]> Fri, 03 Oct 2008 01:47:47 +0000 http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41606&title=pane-redraw-doubt#41606 <![CDATA[Pane redraw doubt! : Interestingly... http://msdn.m...]]> http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41602&title=pane-redraw-doubt#41602 Author: znakeeye
Subject: 12287
Posted: 02 October 2008 at 5:39pm

Interestingly... http://msdn.microsoft.com/en-us/library/bb983830.aspx]]> Thu, 02 Oct 2008 17:39:07 +0000 http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41602&title=pane-redraw-doubt#41602 <![CDATA[Pane redraw doubt! : I have a pane P1 with heavy GDI-drawing...]]> http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41473&title=pane-redraw-doubt#41473 Author: znakeeye
Subject: 12287
Posted: 29 September 2008 at 12:32pm

I have a pane P1 with heavy GDI-drawing (memory-device + bitmap used). A hidden pane H1 is then shown. When I move away the mouse pointer it closes, but the content of H1 is visible for some 2 seconds!
 
Try this sample:
uploads/20081002_172727_PaneRedrawProbl.zip
 
You will see that only the obscured area of the right pane is invalidated, which is probably the best thing to do in most cases. However, why does this happen when CS_SAVEBITS is set for the window class?
 
I believe this is a flaw in the pane implementation!
 
 
From MSDN:
CS_SAVEBITS Saves, as a bitmap, the portion of the screen image obscured by a window of this class. When the window is removed, the system uses the saved bitmap to restore the screen image, including other windows that were obscured. Therefore, the system does not send WM_PAINT messages to windows that were obscured if the memory used by the bitmap has not been discarded and if other screen actions have not invalidated the stored image.
]]> Mon, 29 Sep 2008 12:32:45 +0000 http://forum.codejock.com/forum_posts.asp?TID=12287&PID=41473&title=pane-redraw-doubt#41473