How to convert _bstr_t to CString

Question

I have a _bstr_t variable bstrErr and I am having a CString variable csError. How do I set the value which come in

Answer 1

CString has contructors and assignment operators for both LPCSTR and LPCWSTR, so there is never a need to call WideCharToMultiByte, and you can't get the casting wrong in unicode or non-unicode mode.

You can just assign the string this way:

csError = bstrErr.GetBSTR();

Or use the constructor CString csError( bstrErr.GetBSTR() );

I'm using GetBSTR. It's the same thing as casting bstrErr with (LPCWSTR), but I prefer it for legibility.