title: QT open file with Shared access
body: <p>I am looking for a cross-platform way of opening file in a way that other applications can   read and write into it. The Windows's API has this functionality:
  <a href="http://msdn.microsoft.com/en-us/library/y973b725(v=vs.110).aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/y973b725(v=vs.110).aspx</a>
  ( FileShare parameter )</p>
  
  <p>Is there any way this to be done with QT in a cross-platform fashion.</p>
  
  <p>Thanks:)</p>