The ScriptCheckBox command creates a canvas "checkbox" element, which, can be queried from the canvas during a button action.

By default, ischecked = false

The position option can be used to specify absolute coordinates for the location of the button on a canvas, or a relative position below or to the right of the previous component.

$\mathrm{with}\left(\mathrm{DocumentTools}:-\mathrm{Canvas}\right)\:$

testcheckbox := proc (canvas)
  local M;
  M := GetElements(canvas,"checkbox");
  local sc := Script();
  SetActive(sc,"out");
  SetText(sc,`if`(M[1]:-ischecked=true,"Checked","Not Checked") );
  ToString(sc);
end proc:

$\mathrm{cv}≔\mathrm{NewCanvas}\left(\left[\mathrm{ScriptCheckBox}\left(''Caption\; A''\,\mathrm{custom}=''A''\right)\,\mathrm{Text}\left(''''\,\mathrm{custom}=''out''\right)\,\mathrm{ScriptButton}\left(''Test''\,\mathrm{testcheckbox}\right)\right]\right)\:$

$\mathrm{ShowCanvas}\left(\mathrm{cv}\right)$

The DocumentTools[Canvas][ScriptCheckBox] command was introduced in Maple 2022.

For more information on Maple 2022 changes, see Updates in Maple 2022.