stop() method does not work

valerio_sperati

Hi, I would like to perform some operations before quitting a sketch. I found on forums that method stop() is called before the application quits. I tried it, but it seems to me it is never called. Here follows a minimal (not working) example.

void setup() { size(100,100); println("start"); } void draw() { //nothing here } void stop() { println("called stop()"); }

KevinWorkman

I answered this question here.

Please link between crossposts, that way people don't waste their time answering questions that have already been answered.

GoToLoop

http://forum.processing.org/two/discussion/9408/run-code-when-closing-without-interfering

valerio_sperati

mmm the function exit() -proposed in the link- works if you close the sketch through the X, not if you hit the stop button

quark

To stop a sketch use

System.exit (0);

and place any closin actions in the exit method already mentioned.

GoToLoop

According to Processing's API reference, we should use exit():
http://processing.org/reference/exit_.html

For Java programmers, this is not the same as System.exit(). Further, System.exit() should not be used because closing out an application while draw() is running may cause a crash (particularly with P3D).

System.exit(0); is Java-ish style. Will it really invoke Processing's exit() as well? O_o

quark

GoToLoop I should have taken more time over answering this question. Your points are vaild.

valerio_sperati please ignore my previous comment.