FIX: Error 438 Using CreateInterface's Optional Default Flag

• Microsoft Visual Basic Professional and Enterprise Editions for Windows, version 5.0
• Microsoft Visual Studio 97

SYMPTOMS

Using the CreateInterface's optional "Default" flag results in it not making an interface the default interface for its class.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been fixed in Visual Studio 97 Service Pack 3.

For more information, please see the following article in the Microsoft Knowledge Base:

Q170365 INFO: Visual Studio 97 Service Packs - What, Where, and Why

Q175450 INFO: Visual Basic 5.0 Fixes in Visual Studio 97 Service Pack 3

MORE INFORMATION

Step-by-Step Example

1. Start a new transaction in Visual Basic.



2. Create a new TIM class.



3. Create an interface off the new TIM class using "IClassDef::CreateInterface". Set the interface to be the default interface for this class by passing in "Default" as the value of the optional parameter.



4. Create at least one property and attach it to the new interface.



5. Commit the transaction to save the new TIM.



6. Create an object instance based on the newly-defined class.



7. Try to access the property off the default interface using the following format: "Value = Object.Property."
   
   EXPECTED:
   
   No error.
   
   RESULTS:
   
   Error number: 438
   Error description: Object doesn't support this property or method.

Additional query words:

Keywords : kbVBp500 kbVS97sp2fix kbGrpVBDB kbvbp500sp3fix
Version : WINDOWS:5.0; WINNT:97,97sp3
Platform :
Issue type : kbbug