Re: Help: Overriding the paintComponent when using the Netbeans GUI Builder
john wrote:
....
I wrote a Japplet using the Netbeans's GUI builder.
....hmm. Applets in themselves are tricky enough, but
you want to throw a complex IDE into the mix.
Is that just to make things interesting?
On a JPanel (also created using this tool), I would like to run some
image manipulation and therefore I'm looking for a way to override the
paintComponent. I've tried the following but it seems that it was never
executed (tired also to add some printout commands).
Any idea how can get control on the paintComponent when was build using
the GUI builder?
1) Why are you using the GUI builder?
(It is best to learn how Java layouts work,
by coding them)
2) Why are you using the GUI builder when also
overiding paintComponent()?
The two seem almost diametrically opposed.
public void paintComponent(Graphics g) {
g.drawOval(50,50,250,300);
g.drawString("Hello",50,50);
}
I'm no expert on NB and whether this should be possible,
but I suspect 'yes' in that the GUI builder would probably
allow use of custom components*, it would be very limited
otherwise.
A very limited amount of Googling also suggests that
custom components* in the 'Palette Manager' (where
do they get these names?) can be used in 'forms'.
* A custom component is one where you might overide
paint()/paintComponent(), as you attempted.
I'd be interested in hearing from the NB gurus whether
it can deal with custom components, if so, perhaps an
SSCCE** of failing code might identify the problem.
** <http://www.physci.org/codes/sscce/>
Andrew T.