How to convert wstring to wchar_t*? C++

问题

I would like to convert wstring to wchar_t*. I have tried everything what i know, please help. I would like to convert wstring to wchar_t*.

回答1:

Did you try reading the reference

const wchar_t* wcs = s.c_str();

回答2:

There is no way to convert wstring to wchar_t* but you can convert it to const wchar_t* which is what answer by K.Kirsz says.

This is by design because you can access a const pointer but you shouldn't manipulate the pointer. See a related question and its answers.

The best bet is to create a new string using _wcsdup and access the non const buffer, an ascii example is given there.

For unicode:

    wstring str = L"I am a unicode string";
    wchar_t* ptr = _wcsdup(str.c_str());
    // use ptr here....
    free(ptr); // free memory when done

来源：https://stackoverflow.com/questions/44985451/how-to-convert-wstring-to-wchar-t-c