title: Get path to all users' start menu on Windows
body: <p>I am looking for a way to retrieve the path to the all users start menu directory in C++. I am only able to get the one of the current user (using Qt):</p>
  
  <pre><code>QString startMenuPath = QStandardPaths::standardLocations(QStandardPaths::ApplicationsLocation).at(0);
  </code></pre>
  
  <p>However, Qt does not allow to retrieve the one for all users. As far as I know there also is no environment variable containing that path, that I could read.</p>