[SOLVED] Report doesn't paint if out of GDI memory
Printed From: Codejock Forums
Category: Codejock Products
Forum Name: Report Control
Forum Description: Topics Related to Codejock Report Control
URL: http://forum.codejock.com/forum_posts.asp?TID=16358
Printed Date: 29 September 2024 at 3:28am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: [SOLVED] Report doesn't paint if out of GDI memory
Posted By: Sergio
Subject: [SOLVED] Report doesn't paint if out of GDI memory
Date Posted: 05 March 2010 at 9:52am
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Hello,
Our customers are working with many windows using your report control and have large screen display. At a certain point, the report control window is left unpainted and seems to hang, but after resizing the window it comes back to life. After looking at your code, we saw that you don't check if the bitmap buffer was successfully created : void CXTPReportControl::OnPaint() { ... CDC memDC; memDC.CreateCompatibleDC(&dc); m_bmpCache.DeleteObject(); m_bmpCache.CreateCompatibleBitmap(&dc, rc.Width(), rc.Height()); ... Should be : ... BOOL bUseBuffer = FALSE; CDC* pDC = &dc; CDC memDC; if (memDC.CreateCompatibleDC(&dc)) { m_bmpCache.DeleteObject(); if (m_bmpCache.CreateCompatibleBitmap(&dc, rc.Width(), rc.Height())) { �bUseBuffer = TRUE; �pDC = &memDC; �... } } ... Perform drawings using pDC ... if (bUseBuffer) { ... Blit memDC to dc ... } ... Could you please fix it, thank you. Regards, ------------- Sergio |
Replies:
Posted By: znakeeye
Date Posted: 05 March 2010 at 12:47pm
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Perhaps CXTMemDC could be updated with this type of logic. Then you could use it in the report control too. ------------- PokerMemento - http://www.pokermemento.com/ |
Posted By: Sergio
Date Posted: 10 March 2010 at 12:00pm
Thank you for your answer, but are you talking to Codejock's developers? I don't want to rewrite the OnPaint() of the report control... ------------- Sergio |
znakeeye wrote:Posted By: Sergio
Date Posted: 05 May 2010 at 9:45am
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Hello,
Any news regarding this issue? Do you plan to fix it? ------------- Sergio |
Posted By: ABuenger
Date Posted: 11 April 2011 at 12:52pm
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Code has been updated for 15.0.3 Double buffering can now also be disabled altogether, EnableDoubleBuffering(FALSE); If double buffering fails it falls back to direct drawing. ------------- Codejock support |