Break long process in CC 2014 (Mac OS)

Question

var win = new Window("palette", "SnpCreateProgressBar", undefined);
win.pnl = win.add("panel", undefined, "Script Progress");
win.pnl.progBarLabel = win.pnl.add("statictext", undefined, "0%");
var btn = win.pnl.add ("button", undefined, "Cancel");
btn.onClick = function() { win.close(0); }
win.show();
var i = 0;
while(i < 200) {
   win.pnl.progBarLabel.text = i + "%";
   $.sleep(30);
   win.update();
   i++;
//   activeDocument.textFrames[0].contents = i + "";
   redraw();
alert('Done!');
win.close();
button not work
MacOS
Give way to the user to break the script

Answer 1

withoutdix wrote:
button not work
yes it does, you press the button, the window closes, however your while loop keeps going, you need to explicitly stop it.
do something like this to stop the loop
var i = 0;
btn.onClick = function() {i=201; win.close(0); }
win.show();
while(i < 200) {