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TRSCustomChartPanel.OnDrawingBackground Event

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Occurs right before the Background is drawn. Use the OnDrawingBackground event to paint behind the Background before it is drawn over top. By setting the DoDraw parameter to False, you can also prevent the Background from drawing. The Canvas parameter contains the canvas where the Background will be drawn, and the ARect parameter specifies where on the canvas the Background will be drawn.

Namespace: FMX.RS.ChartPanel

Delphi

public
property OnDrawingBackground: TRSChartDrawingEvent read GetOnDrawingBackground write SetOnDrawingBackground;

Value

Type: TRSChartDrawingEvent

The following code uses the OnDrawingGradient event handler to prevent the gradient from being drawn. The same principle applies here:

Delphi

procedure TForm1.RSChartPanel1DrawingGradient(Sender: TObject;
const Canvas: TCanvas; ARect: TRect; var DoDraw: Boolean);
begin
DoDraw := False;
end;

Reference

•	FMX.RS.ChartPanel.TRSCustomChartPanel.Background

•	FMX.RS.ChartPanel.TRSCustomChartPanel.OnDrawBackground

•	FMX.RS.ChartPanel.TRSCustomChartPanel.OnDrawChartBackground

•	FMX.RS.ChartPanel.TRSCustomChartPanel.OnDrawingChartBackground

•	TRSCustomChartPanel

•	FMX.RS.ChartPanel

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