anchor.diff:      property    OnShowHint;
       property    OnStateImageClicked: TfpgStateImageClickedEvent read FOnStateImageClicked write FOnStateImageClicked;
     end;
  -  
  +
   
   implementation
   
  
positive.code:         Canvas.SetColor(FTreeLineColor);
          Canvas.SetLineStyle(1, lsSolid);  // rectangle is always solid line style
          Canvas.DrawRectangle(w - FXOffset - GetColumnWidth(i1) div 2 - 3, ACenterPos - 3, 9, 9);
          
          Canvas.SetColor(clText1);
  
          if h.Collapsed {or h.HasChildren} then
  
negative.code:         ResetScrollbar;
          RePaint;
        end;
  
      keyLeft:
        begin
          Consumed := True;
  