BUG: Adding Method to Custom Interface Causes MIDL2269

• Microsoft Visual C++, 32-bit Editions, versions 5.0, 6.0

SYMPTOMS

Adding a method to an ATL class generates the following compile time error:

MIDL2269 : procedures in an object interface must return an HRESULT

CAUSE

The method implements a custom interface, does not use the [local] attribute, and does not return a value of type HRESULT.

RESOLUTION

Add the [local] attribute to either the interface or the method.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

MORE INFORMATION

Steps to Reproduce Behavior

1. Create a default ATL project.



2. Right-click the project in ClassView and select New Class.



3. In the New Class dialog box, select ATL Class as the class type.



4. Enter a name for the class, and select Custom for the Interface type. Click OK.



5. Right-click the interface in ClassView and select Add Method.



6. In the "Add Method to Interface" dialog box, select any return type other than HRESULT.



7. Enter a method name, and specify the parameters. Click OK.



8. Build the project.

Additional query words:

Keywords : kbwizard kbClassView kbide kbMiscTools kbVC500bug kbVC600bug kbGrpDSTools
Version : WINNT:5.0,6.0
Platform : winnt
Issue type : kbbug