Ai 2020 ScriptUI ListBox checked item

[Silly-V]

Is it just me, or are checked list items now gone from Illustrator 2020?

Try this snippet to see what results you get in your Ai 2020:

#target illustrator

function test(){

  var w = new Window("dialog", "Checkbox Test");

  var testList = w.add("listbox", undefined, []);

  var newItem;

  for (var i = 0; i < 10; i++) {

    newItem = testList.add("item");

    newItem.text = "Item #" + i;

    newItem.checked = false;

  }

  testList.onDoubleClick = function () {

    alert("Double-clicked!");

  };

  w.show();

};

test();

[CarlosCanto]

you made me finally update, I did't want to be disappointed at crucial times.

I can confirm, check marks are gone, Win 10, CC2020.

In 2019, check marks are still there.

[Silly-V]

This is really starting to get on my nerves. Trying to make an image-based solution but these darn images don't seem to wanna change...

[Silly-V]

Ok, with an image-based approach I've figured out that embedded images don't change, but images referenced via File() do.

#target illustrator
function test () {
	// var imageResources = {
	// 	"unchecked" : "\u0089PNG\r\n\x1A\n\x00\x00\x00\rIHDR\x00\x00\x00\x14\x00\x00\x00\x14\b\x06\x00\x00\x00\u008D\u0089\x1D\r\x00\x00\x00\x19tEXtSoftware\x00Adobe ImageReadyq\u00C9e<\x00\x00\x00<IDATx\u00DAb`\u00A0\x11X\x0F\u00C4\u00FF)\u00C4\u00EB\u0091\r\x04\t\x04P\u00E0\u00A0\x00\u00A8\x19(\x06R\n\u00C0f0Q;\u00ECF\r\x1C5p\u00D4\u00C0\u00E1g \u00A5\u00C5\x17m\x0BX\u00AA\x01\u0080\x00\x03\x00\x0B7'\u00F5\u00D3\u00C4k\u00F5\x00\x00\x00\x00IEND\u00AEB`\u0082",
	// 	"checked" : "\u0089PNG\r\n\x1A\n\x00\x00\x00\rIHDR\x00\x00\x00\x14\x00\x00\x00\x14\b\x06\x00\x00\x00\u008D\u0089\x1D\r\x00\x00\x00\x19tEXtSoftware\x00Adobe ImageReadyq\u00C9e<\x00\x00\x00\u00F2IDATx\u00DA\u00B4\u0094\u00DF\r\u00820\x10\u00C6i'p\x04\u009Exv\x04G`\x04\x18\u0081\x11\u00D8@'\u0080\r\u0088\x13\u00E8\x1C}\u00D1\x11\u00DC\x00\u00BF3mr\u009C\x1C\u0096\u00B4^r\u00E9\u00FF_\u00BF\u00F6\u00AE-\u008A?\u00D9\x04\u009F\x13}\u00E2@\u00EA\u00A8\x13\x04\u00D5\u009E\u00B1\x00\u00A6\u00DA\u0087ayOUU'\u00F8a\x0F\x05\u00F3\u008F\u00BCm\u00C5\u00F8\x13~\u008B\u0085b\u00DE\u0080\u00E2\u00A5\x02\u009Ds\x04\u00BC\u00C2\x1Frg\x05\x16\u00D6\u00A8\n\u00C9\u00CE\u00BE$\u00A5\u00F5\x06\u00AC\u0081\u00F7r\u00EC\x0B\u0088\x1D\u00E9\b\x1D\u009C\u008E=aq\u00A3\u00C0F\u00A9NSH\u00D0\x11\u00C5\u00DD7\u0087p<\x06+\u00D6\u00D4\u0091\x19\x16r##N\u00C7\x16\x01+}\u009D\u00D4\u00B5+ic\u00ACv\u00E9X@\nG\u00D6U\u00B2z\u00AF\u00AD\u00B3?2\u00A3\u0093i\u00A1\u00DD]\x14\u00D0\x07\u00E8\"\u00BA\u00FB\u00E8g\u00B3\u0091s\u0094\u0097s\bN\u00F4\u00D3\u00DB\u00B0v\u008F\u00BA\u00A8\u00CFAKr\u008D\u0091\u00FD\u00FB\u00CA\u00FE\u00C1f\u00B3\u00B7\x00\x03\x00\u00E0ip\u0096\u009B\u0090\u00B5\u00DF\x00\x00\x00\x00IEND\u00AEB`\u0082"
	// };

	// works.
	var imageResources = {
		"unchecked" : File("....../unchecked.png"),
		"checked" : File("....../checked.png")
	}
	var w = new Window("dialog", "Checkbox Test");
	var list = w.add("listbox", undefined, []);
	var items = ["A", "B", "C"];
	var thisItem, thisListItem;
	for (var i = 0; i < items.length; i++) {
		thisItem = items[i];
		thisListItem = list.add("item");
		thisListItem.text = thisItem;
		thisListItem.checked = false;
		thisListItem.image = ScriptUI.newImage(imageResources.checked);
	}
	list.onDoubleClick = function () {
		if (this.selection == null || (this.selection.hasOwnProperty("length") && this.selection.length != 1)) {
			return;
		}
		this.selection.checked = !this.selection.checked;
		this.selection.image = ScriptUI.newImage((this.selection.checked)? imageResources.checked : imageResources.unchecked);
	};
	w.show();
};
test();