I recently got the following strange error-message during the execution of the COM-wrapper wizard:
"Method 'Item' in COM-object for class 'Interfaces' returned
error code 0x800A0009 (<unknown>) which means: <unknown>"
Debugging the wizard, I recognized that at the origin of this problem was an object that shouldn’t have been identified as a COM-object. Since it was a commercial product I couldn’t fix that behavior and the COM-wrapper wizard does unfortunately not allow me to choose the objects I like to wrap (and with that deselecting this particular object), I had to write a little workaround by modifying the wizard.
If once you have the same problem, just modify the “initiateClassCreation”-method of the SysCOMWrapperGen-class like this (I highlighted the modified code bold and italic):
1: if (inheritedInterface)
3: //REM : Correction in order to prevent pointing to an unexisting position
4: if (inheritedInterface.ImpliedInterfaces().Count() > 0)
6: if (inheritedInterface.ImpliedInterfaces().Item(1).Name() !=
7: 'IDispatch' && inheritedInterface.ImpliedInterfaces().Item(1).Name() !=
10: inheritedInterface =
12: inheritString = 'extends ' + Prefix +