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How to communicate between two components in both direction?

On my applet, I have a 200*200 canvas (say CanvasA), and a scrollPane contains another 2000*2000 canvas (say CanvasB) on it. Now I want to two direction communication like this:
1. when I click on CanvasA's position (x, y), I want the scrollPane's scroll position to be adjusted to (10*x, 10*y).
I can implement this by put the scrollPane in CanvasA's constructor;
2. however, when I drag or click on scrollPane's scroll bar, I can get a scroll position (x, y) form scrollPane, I also want a rectangle defined by (x/10, y/10, 30, 30) reflected on CanvasA.

also, here applet, CanvasA, CanvasB are three different class, while scrollPane is just a component on applet.

Hope I have made myself clear.

Looking for your answer, thanks,

Daisy

sgoms

you cannot add a listener to the scrollbars in a scrollpane.
either you can go in for Scrollbar or JScrollPane.

wud swing be ok? or r u particulat abt java 1.1x??

DaisyWang

ASKER

To: sqoms

I mean I have successfully add a listener to scrollpane (not scrollbar). However, what I want is whenever I click on the scrollbar of scrollPane, I want the CanvasA to reflect the proper area of CanvasB shown on scrollPane.

Thanks.

Daisy

heyhey_

'applet, CanvasA, CanvasB are three different class, while scrollPane is just a component on applet.'

do you have problem in implementing some functionality or you just can't access some object methods from other objects ?

generally speakig, you can always use these methods
addAdjustmentListener()
setScrollPosition()

(maybe it's better to post your code ?)

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sgoms

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DaisyWang

ASKER

ya, it works! thank you a lot!