Unable to convert the CStringW to CStringA
c++, cstring, mbcs, mfc, string
Solution
`CStringW` stores Unicode UTF-16 strings.
What encoding do you expect for your `CStringA`?
Do you want UTF-8? In this case, you can do:
// strUtf16 is a CStringW.
// Convert from UTF-16 to UTF-8
CStringA strUtf8 = CW2A(strUtf16, CP_UTF8);
Talking about `CStringA` without specifying an encoding doesn't make sense.
The second parameter of `CW2A` is a what is passed to `WideCharToMultiByte()` Win32 API as `CodePage` (note that `CW2A` is essentially a convenient safe C++ RAII wrapper around this API). If you follow this API documentation, you can find several "code page" values (i.e. encodings).
Problem
I am working on one project where I have stucked on one problem of converting `CStringW` to `CStringA` for multibyte string like Japanese Language. I am loading the string from string resources using `LoadString()` Method. I have tried following code but it does not seem to work. ``` CStringW csTest; csTest.LoadString(JAPANESE_STRING); CStringA Msg = CStringA(csTest); // Msg has been returned blank string ``` And ``` std::string Msg = CW2A(csTest);// Msg has been returned blank string ``` I have also tried `wcstombs()` too. Can anyone tell me how I can convert `CStringW` to `CString`? Thanks in advance.