This traits class takes an interface type and provides a specialisation that has a statid iid() method which returns the interface identifier (IID) for that type.
To use, simply have the expression IID_traits<I>::iid() where I is your interface type.
On compilers that support the __uuidof pseudo-operator this is used, otherwise you must specify specialisations - using the COMSTL_IID_TRAITS_DEFINE macro - for your interfaces, as in
All the interfaces currently defined in unknown.idl and objidl.idl are so defined in the file comstl_interface_traits_std.h, which is included in for non-__uuidof compilations.
Static Public Member Functions
|static REFIID||iid ()|
|Returns a reference to the IID for the parameterising interface. |
|static REFIID iid||(||)||
Returns a reference to the IID for the parameterising interface.