title: Qt5: how to batch process by using QProcess
body: <p>I want to let QProcess run many command at a time,instead of one at a time.</p>
  
  <pre><code>void Route::add_route()
  {
      QProcess *Add_route = new QProcess(this);
      Add_route-&gt;start("notepad",QStringList() &lt;&lt; "interface" &lt;&lt; "ipv4" &lt;&lt; "set" &lt;&lt; "interface" &lt;&lt; "" &lt;&lt; "metric=1");
      Add_route-&gt;start("explorer",QStringList() &lt;&lt; "interface" &lt;&lt; "ipv6" &lt;&lt; "set" &lt;&lt; "interface" &lt;&lt; "" &lt;&lt; "metric=1");
      Add_route-&gt;waitForFinished();
  }
  </code></pre>
  
  <p>By using this,it will only run the first one.<br>
  Ps: I'm using notepad and explorer just for test<br>
  Thanks!</p>