从LPCWSTR转换字符串，反之亦然c++

#include <iostream>
#include <Windows.h>

int main() {
    LPCWSTR wideStr = L"Hello, World!"; // 宽字符字符串
    int bufferSize = WideCharToMultiByte(CP_UTF8, 0, wideStr, -1, nullptr, 0, nullptr, nullptr);
    char* buffer = new char[bufferSize];
    WideCharToMultiByte(CP_UTF8, 0, wideStr, -1, buffer, bufferSize, nullptr, nullptr);

    std::cout << "转换后的字符串: " << buffer << std::endl;

    delete[] buffer;
    return 0;
}

#include <iostream>
#include <Windows.h>

int main() {
    const char* str = "Hello, World!"; // 多字节字符串
    int bufferSize = MultiByteToWideChar(CP_UTF8, 0, str, -1, nullptr, 0);
    wchar_t* buffer = new wchar_t[bufferSize];
    MultiByteToWideChar(CP_UTF8, 0, str, -1, buffer, bufferSize);

    std::wcout << L"转换后的宽字符字符串: " << buffer << std::endl;

    delete[] buffer;
    return 0;
}