PageMediaSize Klass

Definition

public ref class PageMediaSize sealed

public sealed class PageMediaSize

type PageMediaSize = class

Public NotInheritable Class PageMediaSize

Arv

Object

PageMediaSize

Exempel

I följande exempel visas hur du använder den här klassen för att skala ett visuellt element så att det passar inom marginalerna på papperet som det ska skrivas ut på.

/// <summary>
///   Returns a scaled copy of a given visual transformed to
///   fit for printing to a specified print queue.</summary>
/// <param name="v">
///   The visual to be printed.</param>
/// <param name="pq">
///   The print queue to be output to.</param>
/// <returns>
///   The root element of the transformed visual.</returns>
private Visual PerformTransform(Visual v, PrintQueue pq)
{
    ContainerVisual root = new ContainerVisual();
    const double inch = 96;

    // Set the margins.
    double xMargin = 1.25 * inch;
    double yMargin = 1 * inch;

    PrintTicket pt = pq.UserPrintTicket;
    Double printableWidth = pt.PageMediaSize.Width.Value;
    Double printableHeight = pt.PageMediaSize.Height.Value;

    Double xScale = (printableWidth - xMargin * 2) / printableWidth;
    Double yScale = (printableHeight - yMargin * 2) / printableHeight;

    root.Children.Add(v);
    root.Transform = new MatrixTransform(xScale, 0, 0, yScale, xMargin, yMargin);

    return root;
}// end:PerformTransform()

''' <summary>
'''   Returns a scaled copy of a given visual transformed to
'''   fit for printing to a specified print queue.</summary>
''' <param name="v">
'''   The visual to be printed.</param>
''' <param name="pq">
'''   The print queue to be output to.</param>
''' <returns>
'''   The root element of the transformed visual.</returns>
Private Function PerformTransform(ByVal v As Visual, ByVal pq As PrintQueue) As Visual
    Dim root As New ContainerVisual()
    Const inch As Double = 96

    ' Set the margins.
    Dim xMargin As Double = 1.25 * inch
    Dim yMargin As Double = 1 * inch

    Dim pt As PrintTicket = pq.UserPrintTicket
    Dim printableWidth As Double = pt.PageMediaSize.Width.Value
    Dim printableHeight As Double = pt.PageMediaSize.Height.Value

    Dim xScale As Double = (printableWidth - xMargin * 2) / printableWidth
    Dim yScale As Double = (printableHeight - yMargin * 2) / printableHeight

    root.Children.Add(v)
    root.Transform = New MatrixTransform(xScale, 0, 0, yScale, xMargin, yMargin)

    Return root
End Function ' end:PerformTransform()

Kommentarer

För en klass som innehåller samma information om mediestorleken som PageMediaSize och även innehåller information om det bildbara området på sidan, se PrintDocumentImageableArea.

Om du vill skriva ut från ett Windows Forms program läser du namnområdet System.Drawing.Printing.