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Microsoft KB Archive/171551

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Knowledge Base


FIX: 32-Bit DBList/DBCombo May Exhibit Problems When Locked

Article ID: 171551

Article Last Modified on 3/2/2005



APPLIES TO

  • Microsoft Visual Basic 5.0 Control Creation Edition
  • Microsoft Visual Basic 5.0 Learning Edition
  • Microsoft Visual Basic 5.0 Professional Edition
  • Microsoft Visual Basic 5.0 Enterprise Edition
  • Microsoft Visual Basic 4.0 Standard Edition
  • Microsoft Visual Basic 4.0 Professional Edition
  • Microsoft Visual Basic 4.0 32-Bit Enterprise Edition



This article was previously published under Q171551

SYMPTOMS

When the Locked property of the 32-bit DBList and DBCombo controls is set to True, the following problems may occur:

  • Attempts to programmatically modify the Text or BoundText properties cause error 387 - Property can't be set on this control.
  • The control does not show data from the current record.


CAUSE

This problem is caused by a bug in the Visual Basic 5.0 Data Bound List Controls (DBList32.ocx) in the version that ships with the product (5.00.3714) and in the version that ships with Service Pack 2 (5.01.4319).

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been corrected in version 5.01.4511 of the DBList32.ocx file that ships in Visual Studio 97 Service Pack 3.

For more information, please see the following article in the Microsoft Knowledge Base:

170365 : INFO: Visual Studio 97 Service Packs - What, Where, and Why



For a list of the Visual Basic 5.0 bugs that were fixed in the Visual Studio 97 Service Pack 3, please see the following article in the Microsoft Knowledge Base:

175450 : INFO: Visual Basic 5.0 Fixes in Visual Studio 97 Service Pack 3


MORE INFORMATION

This bug does not occur with any 16-bit versions of Visual Basic.

Although this bug did not occur with the 32-bit version of Visual Basic 4.0, the bug can cause problems with 32-bit applications built by Visual Basic 4.0.

If an application built by the 32-bit version of Visual Basic 4.0 uses the Data Bound List Controls and an application built by Visual Basic 5.0 is installed on that same machine, the older version of the Data Bound List Controls will be overwritten and the bug may occur.

Keywords: kbbug kbfix kb32bitonly kbvs97sp2fix kbvbp500sp3fix KB171551