通过代码获取本地电脑的cpuid。

  cpuid作为每台电脑的唯一标识码，编程中经常会通过获取cpuid来作为一台电脑的注册码。获取方法如下：

void MainWindow::getcpuid(unsigned int CPUInfo[], unsigned int InfoType)

{

#if defined(__GNUC__)// GCC

    __cpuid(InfoType, CPUInfo[0], CPUInfo[1], CPUInfo[2], CPUInfo[3]);

#elif defined(_MSC_VER)// MSVC

#endif

}

QString MainWindow::get_cpuId()

{

    QString cpu_id = "";

    unsigned int dwBuf[4];

    unsigned long long ret;

    getcpuid(dwBuf, 1);

    ret = dwBuf[3];

    ret = ret << 32;

    cpu_id = QString::number(dwBuf[3], 16).toUpper();

    cpu_id = cpu_id + QString::number(dwBuf[0], 16).toUpper();

    return cpu_id;
}

void MainWindow::on_pushButton_clicked()

{

    QString cpuid = get_cpuId();

    ui->lineEdit->clear();

    ui->lineEdit->setText(cpuid);

}