title: Qt App. Deployment on Mac/XP/Vista/Windows 7: Any common access directory to put the License File?
body: <p>I have to deploy a Qt Application on the following environments:</p>
  
  <ul>
  <li>Mac OS/X (>= Tiger 10.4 Intel Based, up to Snow Leopard 10.6.+)</li>
  <li>Windows XP</li>
  <li>Windows Vista</li>
  <li>Windows 7</li>
  </ul>
  
  <p>I need a common access directory to put the License File, and I need every user of the machine to have read/write access to it - not only the administrator.</p>
  
  <p>I checked many Qt functions like the following:</p>
  
  <pre><code>QString QDir::homePath()
  QDir QDir::home ()
  QString QDir::rootPath ()
  QString QDir::tempPath ()
  </code></pre>
  
  <p>...but they all seem to return either user-specific or too-general paths.</p>
  
  <p>Is there any Qt specific function to get a common "Applications Path"?</p>
  
  <p>I 've started to think about creating my own function taking into account the OS version,
  but even in this case I feel a bit lost. 
  Do you know any good source to find what should be an appropriate path for each one for the OS I mentioned above? </p>