MyGlassPane extends Component { ....paint (Graphics g) {g.setColor(Color.OPAQUE);g.drawRect(dimensions, of , entire, MyGlassPane);g.setColor(Color.black);g.drawRect(dimensions, sent, from ,dragEvent);}} 

quote: Original post by javanerd

Original post by joeG

Jim, Have any idea on how to do that in JDK 1.1?

Javanerd, that's what I eventually want to end up with, a selection rectangle over an image (but not for editing though ), but I don't see any code to undo the last rectangle drawn, so I'm thinking that there wouldn't be any change between what you see in the pic above.


Ah, but there you are wrong my friend…

The XOR painting mode takes care of the painting AND the removing. The idea is that if you paint a rectangle first time using XOR mode it'll alter the colors so that the rectangle is allways visible no matter what the background color is. Then when you paint the rectangle the second time using XOR mode it'll erase whatever was painted the last time (assuming of course that you draw the exact same rectangle).

Try it!

Will that work even with the color black? I guess i don't fully understand the internals of a XOR color mode (model?)


Edited by - Jim_Ross on 2/25/00 1:00:23 PM