/* I 'often' add typedef for GUID: so I put it in a specific file */

typedef struct _GUID {
    ULONG  Data1;
    USHORT Data2;
    USHORT Data3;
    BYTE  Data4[ 8 ];
} GUID, IID, CLSID, *REFIID, *REFCLSID, *LPGUID, *REFGUID, *LPCLSID, *LPCGUID;