title: QProcess ReadAllStandardError()
body: <p>I need to connect a QProcess to an error handler, but I'm unsure how to pass the error string to the slot.  What's below compiles, but doesn't work.</p>
  
  <pre><code>QString MainWindow::RunProcess(QString cstring)
  {
   QProcess *process = new QProcess(this);
   connect(process,SIGNAL(readyReadStandardError()),this,SLOT( adberror(process::ReadAllStandardError() ) ))
   process-&gt;start(cstring);    
  }
  
  
  
  void MainWindow::adberror(QString errtxt)
  {  
    qDebug() &lt;&lt; "error handler"; 
    qDebug() &lt;&lt; errtxt;
   }
  </code></pre>
  
  <p>I can induce a a process error, but adberror() never triggers. </p>
  
  <p>When run, in the Application Output pane I see:</p>
  
  <pre><code>QObject::connect: No such slot MainWindow::adberror(process::ReadAllStandardError() )
  QObject::connect:  (receiver name: 'MainWindow')
  </code></pre>
  
  <p>edit: this is Qt 5.6.  I did a new qmake/clean.</p>