Codejock Developer Community : CXTPBufferDC m_hDC is NULL http://forum.codejock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 20 Apr 2026 22:01:01 +0000 Sun, 21 Nov 2004 21:10:47 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 forum.codejock.com/RSS_post_feed.asp?TID=1437 <![CDATA[Codejock Developer Community]]> http://forum.codejock.com/forum_images/codejock-logo.gif http://forum.codejock.com/ <![CDATA[CXTPBufferDC m_hDC is NULL : I find rencently ,my xtp baed...]]> http://forum.codejock.com/forum_posts.asp?TID=1437&PID=4086&title=cxtpbufferdc-m-hdc-is-null#4086 Author: blueseaing
Subject: 1437
Posted: 21 November 2004 at 9:10pm

I find rencently ,my xtp baed app ofen occure fail , and I find the pointer of CXTPBufferDC ofen has a Nullo m_hDc, for example,


void CXTPCommandBar::OnPaint()
{
 CPaintDC paintDC(this);
 CXTPBufferDC dc(paintDC, CXTPClientRect(this));


 //========= now if(dc.m_hDC==NULL) will return TRUE============

  DrawCommandBar(&dc);

}

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