Yep, all hail the mighty

    #define CHECK(com_expr) hr = (com_expr); if (FAILED(hr)) { return hr; }

Ah, the memories... glad I don't have to touch it ever again. "And a million other things that, basically, only Don Box ever understood, and even Don Box can’t bear to look at them any more".

COM is where all new OS APIs land nowadays, since Vista.

Even if they are eventually wrapped in .NET libraries.

Still is, for those that never discovered C++/CX, WIL or C++/WinRT and are stuck in the ways of Windows XP.

https://docs.microsoft.com/en-us/cpp/cppcx/exceptions-c-cx?v...

https://github.com/microsoft/wil/blob/5a21cac10640f54b7ef886...

https://docs.microsoft.com/en-us/windows/uwp/cpp-and-winrt-a...