PrintPreviewControl.Zoom-Eigenschaft

Ruft einen Wert ab, der angibt, in welcher Größe die Seiten angezeigt werden, oder legt diesen fest.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

Syntax

'Declaration
Public Property Zoom As Double
'Usage
Dim instance As PrintPreviewControl
Dim value As Double

value = instance.Zoom

instance.Zoom = value

public double Zoom { get; set; }

public:
property double Zoom {
    double get ();
    void set (double value);
}

/** @property */
public double get_Zoom ()

/** @property */
public void set_Zoom (double value)

public function get Zoom () : double

public function set Zoom (value : double)

Eigenschaftenwert

Ein Wert, der angibt, in welcher Größe die Seiten angezeigt werden. Der Wert 1,0 gibt die vollständige Größe an.

Ausnahmen

Beispiel

Im folgenden Codebeispiel werden die Document-Eigenschaft, die UseAntiAlias-Eigenschaft und die Zoom-Eigenschaft des PrintPreviewControl veranschaulicht. Zum Ausführen dieses Beispiels fügen Sie folgenden Code in ein Formular ein, und rufen Sie die InitializePrintPreviewControl-Methode im Konstruktor oder in der Load-Ereignisbehandlungsmethode des Formulars auf.

'Declare the PrintPreviewControl object and the PrintDocument object.
Friend WithEvents PrintPreviewControl1 As PrintPreviewControl
Private WithEvents docToPrint As New Printing.PrintDocument

Private Sub InitializePrintPreviewControl()

    ' Construct the PrintPreviewControl.
    Me.PrintPreviewControl1 = New PrintPreviewControl

    ' Set location, name, and dock style for PrintPreviewControl1.
    Me.PrintPreviewControl1.Location = New Point(88, 80)
    Me.PrintPreviewControl1.Name = "PrintPreviewControl1"
    Me.PrintPreviewControl1.Dock = DockStyle.Fill

    ' Set the Document property to the PrintDocument 
    ' for which the PrintPage event has been handled.
    Me.PrintPreviewControl1.Document = docToPrint

    ' Set the zoom to 25 percent.
    Me.PrintPreviewControl1.Zoom = 0.25

    ' Set the document name. This will show be displayed when 
    ' the document is loading into the control.
    Me.PrintPreviewControl1.Document.DocumentName = "c:\someFile"

    ' Set the UseAntiAlias property to true so fonts are smoothed
    ' by the operating system.
    Me.PrintPreviewControl1.UseAntiAlias = True

    ' Add the control to the form.
    Me.Controls.Add(Me.PrintPreviewControl1)
End Sub

' The PrintPreviewControl will display the document
' by handling the documents PrintPage event
Private Sub docToPrint_PrintPage(ByVal sender As Object, _
   ByVal e As System.Drawing.Printing.PrintPageEventArgs) _
       Handles docToPrint.PrintPage

    ' Insert code to render the page here.
    ' This code will be called when the control is drawn.

    ' The following code will render a simple
    ' message on the document in the control.
    Dim text As String = "In docToPrint_PrintPage method."
    Dim printFont As New Font _
        ("Arial", 35, System.Drawing.FontStyle.Regular)

    e.Graphics.DrawString(text, printFont, _
        System.Drawing.Brushes.Black, 10, 10)
End Sub

// Declare the PrintPreviewControl object and the 
// PrintDocument object.
internal PrintPreviewControl PrintPreviewControl1;
private System.Drawing.Printing.PrintDocument docToPrint = 
    new System.Drawing.Printing.PrintDocument();

private void InitializePrintPreviewControl()
{

    // Construct the PrintPreviewControl.
    this.PrintPreviewControl1 = new PrintPreviewControl();

    // Set location, name, and dock style for PrintPreviewControl1.
    this.PrintPreviewControl1.Location = new Point(88, 80);
    this.PrintPreviewControl1.Name = "PrintPreviewControl1";
    this.PrintPreviewControl1.Dock = DockStyle.Fill;

    // Set the Document property to the PrintDocument 
    // for which the PrintPage event has been handled.
    this.PrintPreviewControl1.Document = docToPrint;

    // Set the zoom to 25 percent.
    this.PrintPreviewControl1.Zoom = 0.25;

    // Set the document name. This will show be displayed when 
    // the document is loading into the control.
    this.PrintPreviewControl1.Document.DocumentName = "c:\\someFile";

    // Set the UseAntiAlias property to true so fonts are smoothed
    // by the operating system.
    this.PrintPreviewControl1.UseAntiAlias = true;

    // Add the control to the form.
    this.Controls.Add(this.PrintPreviewControl1);
    
    // Associate the event-handling method with the
    // document's PrintPage event.
    this.docToPrint.PrintPage += 
        new System.Drawing.Printing.PrintPageEventHandler(
        docToPrint_PrintPage);
}

// The PrintPreviewControl will display the document
// by handling the documents PrintPage event
private void docToPrint_PrintPage(
    object sender, System.Drawing.Printing.PrintPageEventArgs e)
{

    // Insert code to render the page here.
    // This code will be called when the control is drawn.

    // The following code will render a simple
    // message on the document in the control.
    string text = "In docToPrint_PrintPage method.";
    System.Drawing.Font printFont = 
        new Font("Arial", 35, FontStyle.Regular);

    e.Graphics.DrawString(text, printFont,
        Brushes.Black, 10, 10);
}

internal:
   // Declare the PrintPreviewControl object and the 
   // PrintDocument object.
   PrintPreviewControl^ PrintPreviewControl1;

private:
   System::Drawing::Printing::PrintDocument^ docToPrint;
   void InitializePrintPreviewControl()
   {
      // Construct the PrintPreviewControl.
      this->PrintPreviewControl1 = gcnew PrintPreviewControl;
      
      // Set location, name, and dock style for PrintPreviewControl1.
      this->PrintPreviewControl1->Location = Point(88,80);
      this->PrintPreviewControl1->Name = "PrintPreviewControl1";
      this->PrintPreviewControl1->Dock = DockStyle::Fill;
      
      // Set the Document property to the PrintDocument 
      // for which the PrintPage event has been handled.
      this->PrintPreviewControl1->Document = docToPrint;
      
      // Set the zoom to 25 percent.
      this->PrintPreviewControl1->Zoom = 0.25;
      
      // Set the document name. This will show be displayed when 
      // the document is loading into the control.
      this->PrintPreviewControl1->Document->DocumentName = "c:\\someFile";
      
      // Set the UseAntiAlias property to true so fonts are smoothed
      // by the operating system.
      this->PrintPreviewControl1->UseAntiAlias = true;
      
      // Add the control to the form.
      this->Controls->Add( this->PrintPreviewControl1 );
      
      // Associate the event-handling method with the
      // document's PrintPage event.
      this->docToPrint->PrintPage += gcnew System::Drawing::Printing::PrintPageEventHandler( this, &Form1::docToPrint_PrintPage );
   }

   // The PrintPreviewControl will display the document
   // by handling the documents PrintPage event
   void docToPrint_PrintPage( Object^ /*sender*/, System::Drawing::Printing::PrintPageEventArgs^ e )
   {
      // Insert code to render the page here.
      // This code will be called when the control is drawn.
      // The following code will render a simple
      // message on the document in the control.
      String^ text = "In docToPrint_PrintPage method.";
      System::Drawing::Font^ printFont = gcnew System::Drawing::Font( "Arial",35,FontStyle::Regular );
      e->Graphics->DrawString( text, printFont, Brushes::Black, 10, 10 );
   }

// Declare the PrintPreviewControl object and the 
// PrintDocument object.
PrintPreviewControl printPreviewControl1;
private System.Drawing.Printing.PrintDocument docToPrint =
    new System.Drawing.Printing.PrintDocument();

private void InitializePrintPreviewControl()
{
    // Construct the PrintPreviewControl.
    this.printPreviewControl1 = new PrintPreviewControl();
    // Set location, name, and dock style for PrintPreviewControl1.
    this.printPreviewControl1.set_Location(new Point(88, 80));
    this.printPreviewControl1.set_Name("PrintPreviewControl1");
    this.printPreviewControl1.set_Dock(DockStyle.Fill);
    // Set the Document property to the PrintDocument 
    // for which the PrintPage event has been handled.
    this.printPreviewControl1.set_Document(docToPrint);
    // Set the zoom to 25 percent.
    this.printPreviewControl1.set_Zoom(0.25);
    // Set the document name. This will show be displayed when 
    // the document is loading into the control.
    this.printPreviewControl1.get_Document().set_DocumentName("c:\\someFile");
    // Set the UseAntiAlias property to true so fonts are smoothed
    // by the operating system.
    this.printPreviewControl1.set_UseAntiAlias(true);
    // Add the control to the form.
    this.get_Controls().Add(this.printPreviewControl1);
    // Associate the event-handling method with the
    // document's PrintPage event.
    this.docToPrint.add_PrintPage(
        new System.Drawing.Printing.PrintPageEventHandler(
        docToPrint_PrintPage));
} //InitializePrintPreviewControl

// The PrintPreviewControl will display the document
// by handling the documents PrintPage event
private void docToPrint_PrintPage(Object sender,
    System.Drawing.Printing.PrintPageEventArgs e)
{
    // Insert code to render the page here.
    // This code will be called when the control is drawn.
    // The following code will render a simple
    // message on the document in the control.
    String text = "In docToPrint_PrintPage method.";
    System.Drawing.Font printFont = new Font("Arial", 35, FontStyle.Regular);

    e.get_Graphics().DrawString(text, printFont, Brushes.get_Black(), 10, 10);
} //docToPrint_PrintPage

Plattformen

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile für Pocket PC, Windows Mobile für Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

PrintPreviewControl-Klasse
PrintPreviewControl-Member
System.Windows.Forms-Namespace
PrintPreviewControl.AutoZoom-Eigenschaft