Instructions

1. Create a file called IMyComInterface.idl.
2. Copy the IDL definition of IMyComInterface below into it.

   import "unknwn.idl";
   
   [object, uuid(673B0E01-4987-11d2-85C0-08001700C57F)]
   interface IMyComInterface : IUnknown
   {
   HRESULT Fx1(CHAR *buf);
   HRESULT Fx2();
   }
   
   [object, uuid(24A4A631-4B59-11d2-85C2-08001700C57F)]
   interface IYourComInterface : IUnknown
   {
   HRESULT Zx1(LONG ix);
   }
   

3. Run guidgen and paste your own uuid's into the uuid(...) in each interface attribute section.
4. Open a Command window.
5. Run vcvars32.bat from the Visual C++ bin directory.
6. Compile IMyComInterface.idl with MIDL as follows: midl IMyComInterface.idl.
7. Examine the contents of IMyComInterface.h and IMyComInterface_i.c to see how MIDL generates interface classes and IDs.

Exercise scoring