title: Java interface to Windows communications? (OLE, OPC, DDE)
body: <p>I need to integrate an off-the-shelf Windows application with a Java application.  At a few key points, I need the Windows application to send an "event" and some data to the Java application.</p>
  
  <p>The Windows application anticipated this need, and can be configured to "Poke a DDE Item", "Set an OLE Auto-Property" or "Write an OPC Item".</p>
  
  <p>I'm already using <a href="http://jacob-project.wiki.sourceforge.net/" rel="nofollow noreferrer">JACOB</a> to call COM methods and set COM properties on a COM object.  However, I'm guessing that's pretty unrelated to these "event" notification capabilities.</p>
  
  <p>Anyone have any experience calling FROM a Windows application to a "DDE Item", "OLE Auto-Property" or "OPC Item" that's actually in a JVM?</p>
  
  <p>Any pointers, advice, etc, would be appreciated.</p>