BitBlt May Not Work When Raster Operation Mode Is NOTSRCCOPY

ID: Q174534

The information in this article applies to:

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

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, please see the following article in the Microsoft Knowledge Base:

Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack

STATUS

Microsoft has confirmed this to be 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 &lt; nXDest and nYsrc != nYdest and dwRop
      = NOTSRCCOPY

Additional query words: BitBlt win32k

Keywords : kbcode kbdisplay NT4SP4Fix kbbug4.00 kbfix4.00.sp4 NTSrvWkst
Version : WinNT:4.0
Platform : winnt
Issue type : kbbug