FIX: Using VB with Modal Form Fails in Internet Explorer

• Microsoft Visual Basic Learning, Professional, and Enterprise Editions for Windows, version 6.0
• Microsoft Internet Explorer (Programming) versions 4.01 SP1, 4.01 SP2, 5.0

SYMPTOMS

When you shut down Internet Explorer, the following error message appears:

This browser window (or ActiveX control in this page) is busy.
Closing this window may cause some problems.

Do you want to close it anyway?

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 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 situation occurs when an ActiveX Document DLL project runs at the Visual Basic Integrated Development Environment (IDE) or an ActiveX Document EXE project runs either at design time or at runtime in Internet Explorer.

Steps to Reproduce Behavior

1. Create a new ActiveX Document EXE project with Visual Basic.



2. Create a Command Button on the User Document.



3. Write the following code to User Document:

   
   Private Sub Command1_Click()
         Dim frm1 As New Form1
         frm1.Show vbModal, Me
         Unload frm1
         Set frm1 = Nothing
   End Sub 




4. Add a new form called form1 in the project.



5. Create a Command Button on this form.



6. Put the following code to the form:

   
   Private Sub Command1_Click()
        Dim frm1 As New Form1
        frm1.Show vbModal, Me
        Unload frm1
        Set frm1 = Nothing
   End Sub 




7. Run the project.



8. Click the Command1 button. Form1 appears.



9. Click the button on Form1. Another instance of the Form appears.



10. Close all the forms.



11. Close the Internet Explorer window.

This browser window (or ActiveX control in this page) is busy.
Closing this window may cause some problems.

Do you want to close it anyway?

REFERENCES

For more information related to ActiveX Documents and Internet Explorer, please see the following articles in the Microsoft Knowledge Base:

Q171825 FIX: Tabbing Problems Using ActiveX Document in a Frame

Q173977 FIX: Modal Dialog Box is NOT MODAL in Internet Explorer

Q200027 HOWTO: Tell if Internet Explorer is Offline from an ActiveX Doc

Q168428 HOWTO: Test Your ActiveX Documents (.VBD)

Q167380 PRB: IE Reports Unknown Type .VBD for ActiveX Document

Q176468 INFO: Behavior of Forms in an ActiveX Document

http://msdn.microsoft.com/workshop/default.asp

Additional query words: VBD BUSY BROWSER

Keywords : kbservicepack kbActiveX kbInternet kbVBp kbVBp600 kbVS600sp2 kbVS600SP1 kbVS600sp3fix kbInetDev
Version : WINDOWS:4.01 SP1,4.01 SP2,5.0,6.0
Platform : WINDOWS
Issue type : kbbug