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
• Microsoft Windows NT Server version 4.0, Terminal Server Edition

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:

• 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

  
  


-or-


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

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.

Additional query words: dosapp 16 bit 16bitapp

Keywords : NT4SP4Fix kbbug4.00 kbfix4.00.sp4 nt16ap ntdosap NTSrvWkst
Version : WinNT:4.0
Platform : winnt
Issue type : kbbug