FIX: Error 405: "Unable to Show Modal Form Within this Context"
Article ID: 184200
Article Last Modified on 5/12/2003
APPLIES TO
- Microsoft Visual Basic 5.0 Learning Edition
- Microsoft Visual Basic 6.0 Learning Edition
- Microsoft Visual Basic 5.0 Professional Edition
- Microsoft Visual Basic 6.0 Professional Edition
- Microsoft Visual Basic 5.0 Enterprise Edition
- Microsoft Visual Basic 6.0 Enterprise Edition
This article was previously published under Q184200
SYMPTOMS
When opening a form from an ActiveX DLL, you may receive the following
error:
Unable to show modal form within this context."
CAUSE
This error occurs when all of the following are true:
- The computer is running Windows 95, Windows 98, or Windows Me.
- The ActiveX DLL has been compiled.
- The client application is in the Visual Basic IDE.
- The client application form has a BorderStyle property set to Dialog.
- The ActiveX DLL form has been previously opened.
RESOLUTION
Set the BorderStyle of the form in the client application to Fixed Single,
and remove the Min and Max buttons from the form. This results in the form
behaving in the same manner as a form with a Dialog BorderStyle.
STATUS
Microsoft has confirmed this to be a bug in the Microsoft products
listed at the beginning of this article. We are researching this
bug and will post new information here in the Microsoft Knowledge
Base as it becomes available. This problem no longer occurs in Windows 2000.
Keywords: kbbug kbfix kbserver kbdll kbforms KB184200