DOCUMENT:Q193335  11-JAN-2001  [vbwin]
TITLE   :PRB: Error Loading Form With Reference to UserControl1.ctl
PRODUCT :Microsoft Visual Basic for Windows
PROD/VER:WINDOWS:6.0
OPER/SYS:
KEYWORDS:kbGrpDSVB

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Visual Basic Learning Edition for Windows, version 6.0 
 - Microsoft Visual Basic Professional Edition for Windows, version 6.0 
 - Microsoft Visual Basic Enterprise Edition for Windows, version 6.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

In a Visual Basic project, if you have a form that references a CTL file (such
as UserControl1.ctl) instead of a compiled OCX, the reference will point to the
specific project that contains the control only. If you add the UserControl and
Form to a project of a different name later, the following error occurs:

   Errors during loading. See <path to form>.log for details.

CAUSE
=====

The reference to the control is bound specifically to the project that the
control resides in. When the form is added to another project, the reference
becomes invalid.

STATUS
======

Microsoft is researching this problem and will post new information here in the
Microsoft Knowledge Base as it becomes available.

MORE INFORMATION
================

Steps to Reproduce Behavior
---------------------------

1. Create a new ActiveX Control project in Visual Basic. UserControl1 is created
   by default.

2. Place a CommandButton on Usercontrol1.

3. Save the control by selecting Save Usercontrol1 As from the File menu.

4. Create a new Standard EXE project and name it Project1. Form1 is created by
   default.

5. Add Usercontrol1.ctl to the new project by selecting Add User Control from
   the Project menu.

6. Add an instance of Usercontrol1 to Form1 by dragging it from the toolbox to
   Form1.

7. Save the Form by selecting Save Form1 As from the File menu.

8. Create another new Standard EXE project and name it Project2.

9. In Project Explorer, right-click on Form1 and select Remove Form1.frm.

10. Add Usercontrol1.ctl, then Form1.frm subsequently to Project2. When
   Form1.frm is loading, the above error occurs.

   NOTE: If you open up Form1.frm in Notepad, you will find a reference to
   Project1.Usercontrol1 Usercontrol11.

Additional query words: kbdss kbDSupport kbVBp kbVBp600 kbCtrl kbCtrlCreate

======================================================================
Keywords          : kbGrpDSVB 
Technology        : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB600Search kbVBA600 kbVB600
Version           : WINDOWS:6.0
Issue type        : kbprb

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.  MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.  SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 2001.