🚀 go-pugleaf

You must use a thread.
It is the only solution.
When the drop is finished, start your thread.


"Mikhail M.Mizels" a �crit :

> Hello All!
>
> I have following problem: I implement Drag and Drop in my program and I need
> to show message box when drop occured, but when I call
> JOptionPane.showMessageDialog() my program hangs.
>
> This is an example which I have downloaded from java.sun.com
>
>   public void drop (DropTargetDropEvent event) {
>
>     try {
>         Transferable transferable = event.getTransferable();
>
>         // we accept only Strings
>         if (transferable.isDataFlavorSupported (DataFlavor.stringFlavor)){
>
>             event.acceptDrop(DnDConstants.ACTION_MOVE);
>             String s = (String)transferable.getTransferData
>  DataFlavor.stringFlavor);
>             addElement( s );
>             event.getDropTargetContext().dropComplete(true);
>
> // THIS IS MY CODE INSERTION
>             JOptionPane.showMessageDialog(this, "test", "test",
> JOptionPane.INFORMATION_MESSAGE);
> // THIS  IS END OF MY CODE INSERTION
>         }
>         else{
>             event.rejectDrop();
>         }
>     }
>     catch (IOException exception) {
>         exception.printStackTrace();
>         System.err.println( "Exception" + exception.getMessage());
>         event.rejectDrop();
>     }
>     catch (UnsupportedFlavorException ufException ) {
>       ufException.printStackTrace();
>       System.err.println( "Exception" + ufException.getMessage());
>       event.rejectDrop();
>     }
>   }
>
> This also hangs.
>
> I  tried to use SwingUtilities.invokeLater() to show message but it has the
> same effect.  What am I doing wrong?