TCustomRVPrintPreview

TRichView Reference | TCustomRVPrintPreview

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TCustomRVPrintPreview is an ancestor of TRVPrintPreview component. This class draws a blank page, introduces mechanisms of page switching and scaling.

Unit CRVPP;

Syntax

TCustomRVPrintPreview = class(TRVScroller)

Hierarchy

TObject

TPersistent

TComponent

TControl

TWinControl

TCustomControl

TRVScroller

Cursors

Print preview uses two cursors:

▪	ZoomInCursor,

▪	ZoomOutCursor.

Scaling

Scaling is defined by:

▪	ZoomMode property – mode of scaling;

▪	ZoomPercent property – scaling percent;

▪	SetZoom method changes ZoomPercent;

▪	OnZoomChanged event occurs when ZoomPercent changes;

▪	ClickMode property allows/disallows zooming.

Page switching

First, Last, Prev, Next methods, PageNo property.

Displaying margins

MarginsPen property

Colors and widths

▪	Color – background color;

▪	PageBorderColor, PageBorderWidth define border around the page;

▪	ShadowColor, ShadowWidth define shadow.

Scheme

PreviewWindow