FIX: 32-Bit DBList/DBCombo May Exhibit Problems When Locked (171551)



The information in this article applies to:

  • Microsoft Visual Basic Control Creation Edition for Windows 5.0
  • Microsoft Visual Basic Learning Edition for Windows 5.0
  • Microsoft Visual Basic Professional Edition for Windows 5.0
  • Microsoft Visual Basic Enterprise Edition for Windows 5.0
  • Microsoft Visual Basic Standard Edition, 32-bit, for Windows 4.0
  • Microsoft Visual Basic Professional Edition, 32-bit, for Windows 4.0
  • Microsoft Visual Basic Enterprise Edition, 32-bit, for Windows 4.0

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.

Modification Type:MinorLast Reviewed:3/2/2005
Keywords:kb32bitOnly kbbug kbfix kbvbp500sp3fix kbVS97sp2fix KB171551