Window Focus Set to Invoke Wrong 16-bit Application Through DDE

• Microsoft Windows NT Workstation version 4.0
• Microsoft Windows NT Server version 4.0

SYMPTOMS

When a user double-clicks a document, based on the association of the document and the DDE commands specified, the documents will be passed to the proper application. The current focus will be set to that application as well. This is the default behavior of Window NT. When the user is running several 16-bit applications in single memory space, the default behavior stays the same, with one difference: the current focus is not set to the correct 16-bit application. This problem only happens when 16-bit applications are run under a single memory space.

CAUSE

Windows NT was not passing the information to the correct application.

RESOLUTION

Use one of the following methods to correct this issue:

• Obtain the following fix or wait for the next Windows NT service pack.

  This fix should have the following timestamp:

        06/30/97  10:20 PM             1,277,712 Shell32.dll (Intel)
        06/30/97  09:20 PM             1,864,976 Shell32.dll (Alpha)
  
     NOTE: Service Pack 3 must be applied to Windows NT 4.0 prior to applying
     this fix.
  
     -or-
  
  

• Run each 16-bit application in a separate memory space.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 4.0. A supported fix is now available, but has not been fully regression-tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support for more information.