Qt5: QTextEdit to (LPVOID lpBuffer，双字dwBytesToWrite)

#include <QApplication>
#include <QTextEdit>
#include <QFile>
#include <Windows.h>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    // 创建QTextEdit控件
    QTextEdit textEdit;
    textEdit.setPlainText("Hello, World!");

    // 获取文本内容并转换为LPVOID类型的指针
    LPVOID lpBuffer = (LPVOID)textEdit.toPlainText().toLocal8Bit().data();
    DWORD dwBytesToWrite = textEdit.toPlainText().toLocal8Bit().size();

    // 打开文件
    HANDLE hFile = CreateFile(L"output.txt", GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
    if (hFile != INVALID_HANDLE_VALUE)
    {
        // 写入数据
        DWORD dwBytesWritten;
        WriteFile(hFile, lpBuffer, dwBytesToWrite, &dwBytesWritten, NULL);

        // 关闭文件
        CloseHandle(hFile);
    }

    return app.exec();
}