Enable drag support at JTree jdk1.4.1

Question

Hi,
I have problems to activate the drag support with own TransferHandler at JTree. When I only activate with setDragEnabled(true) it works fine, but drags only the text from node. I'll drag my own class. So I create an TransferHandler myself. But when I activate this with setTransferHandler(new MyTransferhandler()) and MosueAdapter exportAsDrag() it doesn't work. The exportAsDrag doesn't invoke any drag behavior.
A simple example like this below doesn't work too. But why ?
TIA
Dirk
treecomponentType.setTransferHandler(new TransferHandler("text"));
MouseListener ml = new MouseAdapter() {
public void mousePressed(MouseEvent e) {
JComponent c = (JComponent)e.getSource();
TransferHandler th = c.getTransferHandler();
th.exportAsDrag(c, e, TransferHandler.COPY);
treecomponentType.addMouseListener(ml);

Answer 1

I think the problem is the !GraphicsEnvironment.isHeadless() request in exportAsDrag. Ihis will cause the skip of dragging. But how to correct the problem ?