anchor.diff:  procedure TKMColumnBox.DoClick(X, Y: Integer; Shift: TShiftState; Button: TMouseButton);
   var IsClickHandled: Boolean;
   begin
  +  //do not invoke inherited here, to fully override parent DoClick method
     IsClickHandled := False;
   
     if (Button = mbLeft) and Assigned(fOnCellClick) and not KMSamePoint(fMouseOverCell, KMPOINT_INVALID_TILE) then
  
positive.code:     function GetTop: Integer;
      function GetHeight: Integer;
      function GetWidth: Integer;
  
      function GetVisible: Boolean;
      procedure SetAbsLeft(aValue: Integer);
  
negative.code: 
  procedure TKMDropCommon.DoClick(X, Y: Integer; Shift: TShiftState; Button: TMouseButton);
  begin
    //do not invoke inherited here, to fully override parent DoClick method
  
    //It's common behavior when click on dropbox will show the list
    if fAutoClose then
      ListShow(Self)
  