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CanvasPrintDocumentPreview Event
Hook this event to draw print previews.

Namespace:  Microsoft.Graphics.Canvas.Printing
Assembly:  Microsoft.Graphics.Canvas (in Microsoft.Graphics.Canvas.dll) Version: 0.0.0.0
Syntax
C#
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public event TypedEventHandler<CanvasPrintDocument, CanvasPreviewEventArgs> Preview

Value

Type: Windows.FoundationTypedEventHandlerCanvasPrintDocument, CanvasPreviewEventArgs
Remarks

PrintTaskOptionsChanged will always be raised at least once before the first Preview event has been raised.

The Preview event is raised when the print preview dialog needs a page to be drawn. The provided DrawingSession is configured correctly for drawing the page, with the DPI configured correctly so that the preview size matches the page size.

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void OnPreview(CanvasPrintDocument sender, CanvasPreviewEventArgs args)
{
    PageDescription pageDesc = args.PrintTaskOptions.GetPageDescription(args.PageNumber);
    Size pageSize = pageDesc.PageSize;

    // Draws a rectangle around the entire page
    args.DrawingSession.DrawRect(0, 0, (float)pageSize.Width, (float)pageSize.Height, Colors.Black, 1);
}

See Also