97a98
> 		setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
99d99
< 		winCount++;
199c199,202
< 		//setVisible(true) called.
---
> 		//setVislble(true) must be called before drawing added to desktop, else 
> 		//DND will fail. on drawing added before with a NPE.  note however that
> 		//a nulldrawingView will not fail because it is never really added to the desltop
> 		setVisible(true);
215c218
< 				exit();
---
> 				endApp();//would prefer a method that allowed cleanup
219c222
< 				exit();
---
> 				endApp();//would prefer a method that allowed cleanup
225,227d227
< 
< 		setVisible(true);
< 		toolDone();
238a239,246
> 				public void windowOpened(WindowEvent event) {
> 					winCount++;
> 				}
> 				public void windowClosed(WindowEvent event) {
> 					if (--winCount == 0) {
> 						System.exit(0);
> 					}					
> 				}
885,890c893,901
< 		destroy();
< 		setVisible(false);      // hide the JFrame
< 		dispose();   // tell windowing system to free resources
< 		winCount--;
< 		if (winCount == 0) {
< 			System.exit(0);
---
> //		int reply = JOptionPane.showConfirmDialog(this,
> //													  "Do you really want to exit?",
> //													  "JHotDraw - Exit" ,
> //													  JOptionPane.YES_NO_OPTION,
> //													  JOptionPane.QUESTION_MESSAGE);
> 		// If the confirmation was affirmative, handle exiting.
> //		if (reply == JOptionPane.YES_OPTION) {
> 			endApp();
> //		}
891a903,906
> 	protected final void endApp(){
> 		destroy();
> 	   // tell windowing system to free resources
> 		dispose();
893d907
<