DOCUMENT:Q190459 07-AUG-1998 [vbwin] TITLE :BUG: Restricted Function or Interface Error with IDispatch PRODUCT :Microsoft Visual Basic for Windows PROD/VER: OPER/SYS:WINDOWS KEYWORDS: ====================================================================== --------------------------------------------------------------------- The information in this article applies to: - Microsoft Visual Basic Learning, Professional, and Enterprise Editions for Windows, version 6.0 --------------------------------------------------------------------- SYMPTOMS ======== If an ActiveX DLL project is set to be binary compatible, and a class module has the name "IDispatch," then any changes made to the module will generate the following error: Function or interface marked as restricted, or the function uses an Automation type not supported in Visual Basic. The above error occurs after the expected Incompatibility error message. However, this error will not occur if neither the project's version compatibility is binary nor the class module name is "IDispatch." 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. MORE INFORMATION ================ Steps to Reproduce Behavior --------------------------- 1. Start a new ActiveX DLL project in Visual Basic. Class1 is created by default. 2. Add a new Class to the project and name it "IDispatch." 3. Paste the following code in IDispatch's code window: Public Sub AddRef() End Sub 5. Paste the following code in Class1's code window: Implements IDispatch Private Sub IDispatch_AddRef() End Sub 6. On the File menu, click Make Project1.dll. 7. On the Project menu, click Project1 Properties, and then click the Component tab. 8. In the Version Compatibility Frame, click Binary Compatibility, and then click OK. 9. Comment out the code in "IDispatch" class module. 10. Press the F5 key to run the project, and then click OK to close the Incompatibility error message. Note that the following error occurs: Function or Interface marked as restricted, or the function uses an Automation type not supported in Visual Basic. Additional query words: kbdss kbDSupport kbVBp kbVBp600bug kbCompiler ====================================================================== Platform : WINDOWS Issue type : kbbug ============================================================================= 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 1998.