QProcess 小疑点

QProcess 小问题
cmd = new QProcess();
connect(cmd, SIGNAL(started()), this, SLOT(started()));  
connect(cmd, SIGNAL(readyRead()), this, SLOT(readOutput()));  
cmd->start("ping 192.168.1.1"); 


}

void WIFI::started ()
{

}

void WIFI::readOutput()  
{  
QString test = cmd->readAll();
qDebug() << test;
}  


为什么一致得不到ping 的结果啊。 走不到test

------解决方案--------------------

C/C++ code

Signalsvoid    error ( QProcess::ProcessError error )void    finished ( int exitCode, QProcess::ExitStatus exitStatus )void    readyReadStandardError ()void    readyReadStandardOutput ()void    started ()void    stateChanged ( QProcess::ProcessState newState )