QProcess应用

#include <QCoreApplication>
#include <QProcess>
#include <QDebug>

int main01(int argc, char** argv)
{
    QCoreApplication app(argc, argv);

    QProcess process;
    process.start("tasklist");//从属主进程
    process.waitForFinished();//进程同步执行
    qDebug() << process.readAll();
    qDebug() << process.exitCode();

    return app.exec();
}
int main02(int argc, char** argv)
{
    QCoreApplication app(argc, argv);

    QProcess process;
    process.startDetached("tasklist");//独立的进程
    process.waitForFinished();//进程同步执行
    qDebug() << process.readAll();
    qDebug() << process.exitCode();

    return app.exec();
}
int main03(int argc, char** argv)
{
    QCoreApplication app(argc, argv);

    QProcess process;
    process.start("tasklist");//从属主进程
    QObject::connect(&process,static_cast< void (QProcess:: *)   (int,QProcess::ExitStatus)> (&QProcess::finished),[&](){
       qDebug() << process.readAll();
       qDebug() << process.exitCode();
   });
    qDebug() << "进程异步执行";

    return app.exec();
} 

注：1.pro文件中加入CONFIG += C++11
2.lambda表达式的应用,遇到重载的信号函数需要使用static_cast强制转换以区分