[cube00]

This was bread and butter error handling in COM, everything old is new again!

[Joker_vD]

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".

[pjmlp]

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

Even if they are eventually wrapped in .NET libraries.

[pjmlp]

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...