FIX: Using "Unload Me" in a Listbox Causes Crash

ID: Q171528

The information in this article applies to:

Microsoft Visual Basic Learning and Professional Editions for Windows, version 5.0

SYMPTOMS

Attempting to unload the current form via the Unload statement in the ItemCheck event of a Listbox control may cause your application to terminate with the following error:

"VB5 caused an invalid page fault in module VB5.EXE at 0137:004b5923"

This problem may be intermittent and may only occur when running the project in the IDE (Integrated Development Environment).

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been fixed in Visual Studio 97 Service Pack 2.

For more information on the Visual Studio 97 Service Pack 2, please see the following article in the Microsoft Knowledge Base:

Q170365 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 2, please see the following article in the Microsoft Knowledge Base:

Q171554 INFO: Visual Basic 5.0 Fixes in Visual Studio 97 Service Pack 2

MORE INFORMATION

The Unload statement is used to close a specified form. If you use "Unload Me" in the ItemCheck event of a Listbox control, you may encounter the error stated above. The recommended procedure for unloading a form is to add the Unload statement to the Click event of a CommandButton or Menu control.

Additional query words:

Keywords : kbVBp500 kbVS97sp2fix kbGrpVB VBKBCtrl VBKBDesignTime VBKBEnv VBKBInt VBKBListBox VBKBStd kbvbp500sp2fix
Version : 5.0
Platform : WINDOWS
Issue type : kbbug