BitBlt May Not Work When Raster Operation Mode Is NOTSRCCOPY (174534)

The information in this article applies to:

Microsoft Windows NT Server 4.0 Terminal Server Edition
Microsoft Windows NT Server 4.0
Microsoft Windows NT Workstation 4.0

This article was previously published under Q174534

SYMPTOMS

In some instances under Windows NT 4.0, certain video calls to Win32k.sys may fail when making the following call to the API:

   BitBlt(hdc, 100, 100, 200, 200, hdc, 0, 0, NOTSRCCOPY)

This can be reproduced in a true color environment.

RESOLUTION

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

152734 How to Obtain the Latest Windows NT 4.0 Service Pack

STATUS

Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.

MORE INFORMATION

This problem occurs under the following conditions:

   hdcDest - hdcSrc and nXSrc < nXDest and nYsrc != nYdest and dwRop
      = NOTSRCCOPY

Modification Type:	Minor	Last Reviewed:	9/23/2005
Keywords:	kbHotfixServer kbQFE kbbug kbcode kbdisplay kbfix KB174534