cxTreeList如何获得check状态实现联动？

cxTreeList，在cxTreeList1Column2设置为CheckBox,cxTreeList1Column3设置为ComboBox，cxTreeList1Column4设置为ColorComboBox ，在procedure TForm1.cxTreeList1Column2GetEditingProperties(Sender: TcxTreeListColumn; ANode: TcxTreeListNode;
  var EditProperties: TcxCustomEditProperties);事件中添加如下代码：begin
   // cxTreeList1.FocusedNode.Values[cxTreeList1Column2.ItemIndex]
   //if pos('true',lowercase(ANode.Values[0])) <> 0 then
  if pos('true',lowercase(cxTreeList1.FocusedNode.Values[cxTreeList1Column2.ItemIndex])) = 1 then
   //if pos('true',lowercase(ANode.Values[cxTreeList1Column2.ItemIndex])) <> 0 then    // cxTreeList1.FocusedNode
   begin
      ANode.ImageIndex := 1;
      ANode.Values[3] :=  StringToColor('clLime');
     // ANode.Values[cxTreeList1Column4.ItemIndex] := StringToColor('clLime');
      //showmessage('t');
   end;  // if pos('false',lowercase(ANode.Values[0])) <> 0 then
   if pos('false',lowercase(cxTreeList1.FocusedNode.Values[cxTreeList1Column2.ItemIndex])) = 1  then
   begin
      ANode.ImageIndex := 0;
      ANode.Values[3] :=  StringToColor('clblue');
     // ANode.Values[cxTreeList1Column4.ItemIndex] := StringToColor('clblue');
      //showmessage('f');
   end;  end;但是image有时候不随设置变化，ColorComboBox颜色也不能跟随实时状态变化，请教如何修改代码，或改变事件能实时使image和ColorComboBox跟随设置变化？