no GUID has been associated with this object

[mediabuff]

Although I have attributed an interface in IDL with uuid, cppwinrt does'nt generate that attribute in the header file. Thus I can't query an interface using GUID.

Attached a zip file. Modified the project generated by cppwrint class lib template.
CppwinrtComponentLib.zip

[kennykerr]

__uuidof is a Visual C++ language extension that C++/WinRT knows nothing about. You can use winrt::guid_of to get the guid for a given type in C++/WinRT.