如何将QString复制到wchar_t缓冲区

#include <QString>
#include <string>
#include <locale>
#include <codecvt>
#include <cstring>

void copyQStringToWcharBuffer(const QString& qstr, wchar_t* buffer, size_t bufferSize)
{
    // 将QString转换为标准字符串
    std::string str = qstr.toStdString();

    // 将标准字符串转换为宽字符字符串
    std::wstring_convert<std::codecvt_utf8<wchar_t>> converter;
    std::wstring wstr = converter.from_bytes(str);

    // 复制宽字符字符串到wchar_t缓冲区
    wcscpy(buffer, wstr.c_str());
}

int main()
{
    QString qstr = "Hello, World!";
    const size_t bufferSize = 100;
    wchar_t buffer[bufferSize];

    copyQStringToWcharBuffer(qstr, buffer, bufferSize);

    // 输出wchar_t缓冲区内容
    wprintf(L"%ls\n", buffer);

    return 0;
}