title: QProcess with 'cmd' command does not result in command-line window
body: <p>I am porting code from MinGW to MSVC2013/MSVC2015 and found a problem. </p>
  
  <pre><code>QProcess process;
  QString program = "cmd.exe";
  QStringList arguments = QStringList() &lt;&lt; "/K" &lt;&lt; "python.exe";
  process.startDetached(program, arguments);
  </code></pre>
  
  <p>When I use MinGW, this code results in command-line window. But when I use MSVC2013 or MSVC2015, the same code results in cmd-process running in background without any windows. Are there any ways to make command-line window appear?</p>