Window下wchar_t与char字符串之间的转换

static std::string WChar2Ansi(const wchar_t* src) {
    std::string ret = "";
    const auto size = WideCharToMultiByte(CP_ACP, 0, src, -1, nullptr, 0, nullptr, nullptr);
    if (size > 0) {
        char* dest = new char[size];
        if (nullptr != dest) {
            WideCharToMultiByte(CP_ACP, 0, src, -1, dest, size, nullptr, nullptr);
            ret = dest;
            delete[] dest;
        }
    }
    return ret;
}

static std::wstring Ansi2WChar(const char* src) {
    std::wstring ret = L"";
    const auto size = MultiByteToWideChar(CP_ACP, 0, src, -1, nullptr, 0);
    if (size > 0) {
        wchar_t* dest = new wchar_t[size];
        if (nullptr != dest) {
            MultiByteToWideChar(CP_ACP, 0, src, -1, dest, size);
            ret = dest;
            delete[] dest;
        }
    }
    return ret;
}

int main() {
    std::wcout.imbue(std::locale("chs"));

    const char* str = "*你好abc123#";
    const wchar_t* wstr = L"*你好abc123#";

    auto dest1 = WChar2Ansi(wstr);
    auto wdest2 = Ansi2WChar(str);

    std::cout << "S1: " << dest1 << std::endl;
    std::wcout << L"S2: "<<wdest2 << std::endl;

    return 0;
}

测试环境：Windows 7 and VS2015

以后需要就来这里copy。再也不想写这样的代码了QAQ。

另外补充：如果想在控制台中用std::wcout输出中文，需要先加一句“ std::wcout.imbue(std::locale("chs")); ” 进行设定。

更多信息可以查看这里：https://blog.csdn.net/dahaiyudong/article/details/82533574