Hello,

some time ago I contacted you about a problem I had concerning message loops for COM components.

You suggested me, and you were right, to use a dedicated instance of OleMessageLoop for every instance of OleContainer I need.

The suggested code is as follows :

        OleMessageLoop messageLoop = new OleMessageLoop(getClass().getName() + hashCode());

        messageLoop.doStart();

        _container = new OleContainer(messageLoop);

        _container.createObject(ocxName);

        add(_container, BorderLayout.CENTER);

Each container now receives only the messages that are sent to it.

I now try to register callbacks for each container that are instanciated using this method, and I get an exception c0000005.

The callbacks worked well before, but now, on the second attempt to register the callbacks, I get this exception.

Here is the class involved:

public class UserControl1Container extends JPanel implements UserControl1ContainerListener {

     protected Frame frameParent;

    protected OleContainer _container = null;

    protected IConnectionPoint connectionPoint = null;

    protected Int32 iHandler = null;

    protected UserControl1Listener ocxListener = null;

public UserControl1Container(Frame frame) {

          super();

          frameParent = frame;

          setBackground(Color.GRAY);

          setPreferredSize(new Dimension(600, 400));

          final BorderLayout layout = new BorderLayout();

          this.setLayout(layout);

     }

private void LoadActiveX(String ocxName) {

        OleMessageLoop messageLoop = new OleMessageLoop(getClass().getName() + hashCode());

        messageLoop.doStart();

        _container = new OleContainer(messageLoop);

        _container.createObject(ocxName);

        add(_container, BorderLayout.CENTER);

     }

public void active() {

          _container.doVerb(OleVerbs.INPLACEACTIVATE);

     }

private void setupListener()

     {

         IClassFactoryServer server = new IClassFactoryServer(UserControl1Listener.class);

         server.registerInterface(IDispatch.class, new IDispatchVTBL(server));

         server.registerInterface(__UserControl1.class, new IDispatchVTBL(server));

         server.setDefaultInterface(IDispatch.class);

         IClassFactory classFactory = server.createIClassFactory();

         IDispatchImpl handler = new IDispatchImpl();

         classFactory.createInstance(null, handler.getIID(), handler);

         IOleObjectImpl oleObject = _container.getOleObject();

         IConnectionPointContainer connectionPointContainer = new IConnectionPointContainerImpl(oleObject);

         connectionPoint = connectionPointContainer.findConnectionPoint(new IID(__UserControl1.INTERFACE_IDENTIFIER));

         IEnumConnections enumConnections = connectionPoint.enumConnections();

         enumConnections.reset();

         ocxListener = (UserControl1Listener)server.getInstances().pop();

         ocxListener.setOCXPanel(this);

         ocxListener.addContainerListener(this);

         iHandler = connectionPoint.advise(handler);

     }

public void FullLoad()

     {

          //this.setVisible(false);

          LoadActiveX("OcxWithEchap.UserControl1");

          OleMessageLoop.addAction(new Runnable()

          {

              public void run()

              {

                  setupListener();          

              }

          });

          this.setVisible(true);

     }

public void ocxClosed(EventObject e) {

          connectionPoint.unadvise(iHandler);

          _container.inPlaceDeactivate();

          _container.destroyObject();

          ocxListener.removeContainerListener(this);

          this.setVisible(false);

     }

public void myEvent1(EventObject e) {

          System.out.println("   UserControl1Container");

          System.out.println("   -

");

          System.out.println("      myEvent1");

     }

}

The exception occurs when this line of code is executed (in the setupListener method) :

    IConnectionPointContainer connectionPointContainer = new IConnectionPointContainerImpl(oleObject);

The setupListerner method is called like this:

          OleMessageLoop.addAction(new Runnable()

          {

              public void run()

              {

                  setupListener();          

              }

          });

Does the problem come from here, or....

Thanks for your help.

Pierre-Yves

PS: I attach the whole code to this message, in case you want to reproduce the problem.