FIX: FIX: Error Picking Deleted Object From Dropdown List

ID: Q223107

The information in this article applies to:

SYMPTOMS

A class module in a Standard EXE project contains a declaration for a public event. A form in the Standard EXE project instantiates an object variable based on the class module with the WithEvents keyword. When you delete the declaration statement for the object variable in the code window of the form and select the object variable from the object box of the code window, an application error occurs.


STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

This bug was corrected in Visual Studio 6.0 Service Pack 3.

For more information about Visual Studio 6.0 Service Packs, please see the following articles in the Microsoft Knowledge Base:


Q194022 INFO: Visual Studio 6.0 Service Packs, What, Where, Why

Q194295 HOWTO: Tell That Visual Studio 6.0 Service Packs Are Installed


MORE INFORMATION

This section shows you how to create a sample project that demonstrates the bug behavior. The section assumes you are familiar with adding a class module to a Standard EXE project and instantiating the COM object from that Class module. If you are not familiar with these tasks, see the REFERENCES section for more information on these tasks.

Steps to Reproduce Behavior

  1. Start a new Standard EXE project in Visual Basic. Form1 is created by default.


  2. Add a class module to the project. Class1 is created by default.


  3. Copy the following code to the Code window of Class1:


    4. 
Option Explicit
Public Event MyCustomEvent()
  4. Copy the following code to the Code window of Form1:


    5. 
Option Explicit
Private WithEvents X As Class1
  5. Delete the following line from the Code window of Form1:


    6. 
Private WithEvents X As Class1
  6. In the Object box of Form1, select X.



    7. BUG: An application error occurs.


REFERENCES

For more information about form, standard, and class modules, please see the following:

  • Code Modules

    in the Online Help or the MSDN Web site at:

    http://msdn.microsoft.com/library/devprods/vs6/vb/html/vbconcodemodules.htm


    • For more information about creating your own classes and objects, please see:

  • Programming With Objects

    in the Online Help or the MSDN Web site at:

    http://msdn.microsoft.com/library/devprods/vs6/vb/html/vbconprogrammingwithobjects.htm

    • Additional query words: 

    
Keywords          : kbservicepack kbActivexEvents kbVBp600bug kbGrpVB kbVS600sp2 kbVS600SP1 kbVS600sp3fix 
Version           : WINDOWS:6.0
Platform          : WINDOWS 
Issue type        : kbbug

    Last Reviewed: May 20, 1999