anchor.diff:      inherited DoClick(X, Y, Shift, Button);
       if Assigned(fOnChange)
         and not fOnChangeInvoked
  +      and (fMouseOverCell <> KMPOINT_INVALID_TILE) //Only trigger ovew cells
         and Rows[fMouseOverCell.Y].Cells[fMouseOverCell.X].Enabled then // Only trigger for enabled cells
         fOnChange(Self);
     end;
  
positive.code:     ItemIndex := NewIndex;
      if not KMSamePoint(fMouseOverCell, KMPOINT_INVALID_TILE)
        and Columns[fMouseOverCell.X].TriggerOnChange
        and Rows[fMouseOverCell.Y].Cells[fMouseOverCell.X].Enabled
        and Assigned(fOnChange) then
      begin
        fOnChange(Self);
  
negative.code:     Exit;
  
    // Do not do anything else, in case Cell we are working on is Disabled
    if (fMouseOverCell = KMPOINT_INVALID_TILE)
      or not Rows[fMouseOverCell.Y].Cells[fMouseOverCell.X].Enabled then
      Exit;
  
    NewIndex := fMouseOverRow;
  