Microsoft KB Archive/174534

= BitBlt May Not Work When Raster Operation Mode Is NOTSRCCOPY =

Article ID: 174534

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 4.0, Terminal Server Edition
 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition

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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

Additional query words: BitBlt win32k

Keywords: kbhotfixserver kbqfe kbbug kbcode kbdisplay kbfix KB174534

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