key button help
hi all,
jus a simple question, how would i code a button so that if the NUMPAD 0 was pressed, it would change the buttons icon? i am currently using an image for the button and wish to change that image to a different upon select.
thanks
java newbie
[277 byte] By [
aj_306] at [2007-11-11 7:26:40]
# 1 Re: key button help
I assume the problem is the image switching, not catching the Numpad 0 keystroke.
The hard way:
Make a JButton extension (ImageButton ?), introduce a new constructor that has two Images
as parameters. Then override the paintComponent(Graphics g) method in the
JButton. In this method you paint one or the other image, based on a flag that is
set by a method you include in the ImageButton class, say, setImage(boolean onOff). This method is invoked on every Numpad 0 keystroke.
The easy way:
Make your button a JToggleButton, and set the images using the setSelectedIcon and
the setIcon methods. Switch image by invoking the setSelected method for the button.
sjalle at 2007-11-11 22:38:20 >
# 2 Re: key button help
thanks for that mate! i took the asy option lol!!!
on the off chance can u recommend any easy, Zoom, pan and rotate methods / code that i can implement for my buttons? i have zoom code but its very comprehensive!!!
if not its ok thanks for ur help... much appreciated!
aj_306 at 2007-11-11 22:39:20 >
# 3 Re: key button help
Check this out
http://www.apl.jhu.edu/~hall/java/Java2D-Tutorial.html
and here is a sample applet that I made a while back, it zooms and pans, and, well,
its a bit comprehensive, but it doesnt do anything unnecessary...
sjalle at 2007-11-11 22:40:18 >
# 4 Re: key button help
thanks alot sjalle!
i will have a look at the code, i am not getting no image up tho!
mate u have really helped me alot, its very decent of u, thanks! :)
aj_306 at 2007-11-11 22:41:18 >
