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Scrolling on a JPanel

Hi
i have the following applet : www.tykkebror.dk/scroll
source:
www.tykkebror.dk/scroll/ImagePanel.java
www.tykkebror.dk/scroll/JPanelScroll.java

The applet is just a JPanel with a scrollpane. I want the applet to scroll up and down the image when the mouse is near the edge. My only problem is that I cant get rid of the flickering. Everytime the image is scrolled it flickers or draws strange white lines across it. It doesnt matter if I use the "mouse near the edge thing" or I use the scrollbar it still destroys the graphic. My questions is:
1. Is there an easier more correct way to do the "mouse near the edge thing"?
2. How do I remove the flickering/white lines?

Comments on structure of code or other suggestion are most welcome.

Thx in advance :)
tykkebror

ASKER CERTIFIED SOLUTION

Mick Barry

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Mick Barry

> ((JPanel)currentEvent.getSource()).scrollRectToVisible(scrollRect);

This call should also be made from the event dispatch thread using EventQueue.invokeLater()

tykkebror

ASKER

Thx both of you

Changing the Applet to JApplet and removing the paint method from JPanelScroll sure removed some of the flickering.
Using the EventQueue.invokeLater() method to call ((JPanel)currentEvent.getSource()).scrollRectToVisible(scrollRect); removed the rest.

new applet: www.tykkebror.d/scroll/edit
new source:
www.tykkebror.dk/scroll/edit/ImagePanel.java
www.tykkebror.dk/scroll/edit/JPanelScroll.java

Thank you

tykkebror

ASKER

arrrrrgh why cant i edit my comments. Why cant I redo stuff.
My new applet url should be www.tykkebror.dk/scroll/edit

ohh and objects just posted twice ... same person :)