how do i remove white background in node inside virtual TVirtualStringTree?

[drama22]

Zitat von Zacherl:

I can't even see the actual VirtualStringTree control on this picture Is it the gradient thingy in the background?

this gradient can be drawn easy on paint-background as eg .

Delphi-Quellcode:

procedure TForm2.VTs1PaintBackground(Sender: TBaseVirtualTree;
  TargetCanvas: TCanvas; R: TRect; var Handled: Boolean);
begin
 //
  GradientFillCanvas(TargetCanvas,  clred, clWhite, R, gdHorizontal); // GraphUtil
  Handled := True;

end;

the white bg of node is the issue see my example