Validate dialog on OK button or Enter key

i have dialog bunch of checkboxes , ok , cancel buttons. when user clicks ok or presses enter, want validate other controls , keep dialog open if none of checkboxes checked. know how test checkboxes, not sure how event handler , keep dialog open. suggestions or pointers appreciated.

 

rick

here 1 way of doing it

 

var w = new window('dialog'); var chk1 = w.add('checkbox', undefined, 'check 1'); var chk2 = w.add('checkbox', undefined, 'check 2');   var btnok = w.add('button', undefined, 'ok'); var btncancel = w.add('button', undefined, 'cancel');   btnok.onclick = function () {           //alert('click');           checked (); }     btncancel.onclick = function () {           //alert('cancel');           checked (); }     w.show();   function checked () {           if (chk1.value || chk2.value)                               alert('checked');           else                     alert('unchecked'); } 

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