c++ string与wstring转换

wchar_t to char

#include <comdef.h>

	const wchar_t* exepath = L"d:\\中文 路径\\中文 路径.exe";
	_bstr_t b(exepath);
	const char* c = b;
	printf("%s\n", c);

MultiByteToWideChar string to wstring

  setlocale(LC_ALL, "chs");
  string s1 = "中文 こんにちは";
  wstring s2 = { 0 };
  s2.resize(s1.length());

  MultiByteToWideChar(CP_ACP, 0, s1.c_str(), s1.length(), (LPWSTR)s2.data(), s2.length());

  printf("%s\n", s1.c_str());
  printf("%ls\n", s2.c_str());

WideCharToMultiByte wstring to string

  setlocale(LC_ALL, "chs");
  wstring s1 = L"中文 こんにちは";
  string s2;
  s2.resize(s1.length() * 2);

  WideCharToMultiByte(CP_ACP, 0, s1.data(), s1.length(), (LPSTR)s2.data(), s2.length(), 0, 0);

  printf("%ls\n", s1.c_str());
  printf("%s\n", s2.c_str());