TRVStyle.OnDrawParaBack

Occurs when painting a background of paragraph of the ParaNo-th style.

property OnDrawParaBack: TRVDrawParaRectEvent;

VCL and LCL:

type

TRVDrawParaRectEvent =

procedure (Sender: TRVStyle; ACanvas: TCanvas;

ParaNo: Integer; ARect: TRVCoordRect;

var DoDefault: Boolean) of object;

FireMonkey:

type

TRVDrawParaRectEvent =

procedure (Sender: TRVStyle; ACanvas: TRVFMXCanvas;

ParaNo: Integer; ARect: TRVCoordRect;

var DoDefault: Boolean) of object;

(introduced in version 1.3)

You can use this event to draw your own background and/or border for some or all paragraphs.

Input parameters:

Sender – TRVStyle generating the event.

Canvas – canvas to paint.

ARect – rectangle where to paint.

ParaNo – index in the collection of paragraph styles (ParaStyles).

DoDefault is equal to True.

"Hidden" input parameters:

Sender.RVData: TPersistent, document containing this paragraph. It should be typecasted to TCustomRVFormattedData before using.

Sender.ItemNo: Integer, index of the last item in the paragraph, in Sender.RVData.

Output parameters:

DoDefault – set to False to prevent default drawing.