TRVPrint

TRichView Reference | TRVPrint

TRVPrint

Properties Methods Events

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This component allows printing TRichView, TRichViewEdit, TDBRichView, or TDBRichViewEdit. It is Invisible at run-time.

Unit PtblRV;

Syntax

TRVPrint = class(TCustomRVPrint)

Hierarchy

TObject

TPersistent

TComponent

TCustomRVPrint

How to Use

1.	Assign the source component for printing (AssignSource method).

2.	(optionally) Assign header and/or footer (SetHeader, SetFooter).

3.	Format pages (FormatPages method).

4.	Now you can:

▪	get a number of pages (PagesCount property);

▪	display a print preview (using TRVPrintPreview component; see also DrawPreview, MakePreview MakeScaledPreview methods);

▪	print the whole document (Print method) or range of pages (PrintPages method).

5.	When finished, you can release some temporally allocated memory (Clear).

Events

You can display some information about the process of repaginating and printing:

▪	OnFormatting occurs during repaginating (FormatPages method);

▪	OnSendingToPrinter occurs during printing (Print and PrintPages methods).

You can draw additional content using the following events:

▪	OnPagePrepaint and OnPagePostpaint allow to draw on each page below/over TRichView document;

▪	OnPrintComponent requests image of inserted control for printing.

Margins

There are four properties: LeftMarginMM RightMarginMM, TopMarginMM,BottomMarginMM.

MARGINS

This picture illustrates the meaning of margin properties. Paragraph indents are not shown for simplification.

LeftMarginMM, RighMarginMM, TopMarginMM, BottomMarginMM are measured in millimeters (shown in red).

TRichView.LeftMargin, TRichView.RightMargin, TRichView.TopMargin and TRichView.BottomMargin are measured in "screen pixels" (they are recalculated according to the printer resolution, and margins on the page look like margins on the screen; shown in blue).

Left and right margins can be swapped for even pages, if MirrorMargins is set to True.