Is there a way to get the string representation of HRESULT value using win API?

Question

Is there a function in win API which can be used to extract the string representation of HRESULT value?

The problem is that not all return values are documented in M

Answer 1

You can use _com_error:

_com_error err(hr);
LPCTSTR errMsg = err.ErrorMessage();

If you don't want to use _com_error for whatever reason, you can still take a look at its source, and see how it's done.

Don't forget to include the header comdef.h