PrintPreviewDialog Constructor

public:
 PrintPreviewDialog();

public PrintPreviewDialog();

Public Sub New ()

Voorbeelden

In het volgende codevoorbeeld ziet u de PrintPreviewDialog instelling en DocumentUseAntiAlias eigenschappen. In het voorbeeld wordt ervan uitgegaan dat het formulier een TreeView benoemde bevat TreeView1 die objecten bevat TreeNode . De Tag eigenschap van elk TreeNode object moet worden ingesteld op een volledig gekwalificeerde documentnaam die kan worden geopend door de computer waarop het voorbeeld wordt uitgevoerd. Stel elke TreeNode.Text eigenschap in op een tekenreeks die het bestand identificeert dat door de TreeNode.Tag eigenschap is opgegeven. U kunt bijvoorbeeld instellen TreeNode1.Tag op 'c:\myDocuments\recipe.doc' en TreeNode1.Text op 'recipe.doc'. In het voorbeeld wordt ook ervan uitgegaan dat het formulier een PrintPreviewDialog benoemde PrintPreviewDialog1 en een knop met de naam Button1bevat. Als u dit voorbeeld wilt uitvoeren, roept u de InitializePrintPreviewDialog methode aan in de constructor of Load gebeurtenishandler van het formulier.

   // Declare the dialog.
internal:
   PrintPreviewDialog^ PrintPreviewDialog1;

private:

   // Declare a PrintDocument object named document.
   System::Drawing::Printing::PrintDocument^ document;

   // Initialize the dialog.
   void InitializePrintPreviewDialog()
   {
      
      // Create a new PrintPreviewDialog using constructor.
      this->PrintPreviewDialog1 = gcnew PrintPreviewDialog;
      
      //Set the size, location, and name.
      this->PrintPreviewDialog1->ClientSize = System::Drawing::Size( 400, 300 );
      this->PrintPreviewDialog1->Location = System::Drawing::Point( 29, 29 );
      this->PrintPreviewDialog1->Name = "PrintPreviewDialog1";
      
      // Associate the event-handling method with the 
      // document's PrintPage event.
      this->document->PrintPage += gcnew System::Drawing::Printing::PrintPageEventHandler( this, &Form1::document_PrintPage );
      
      // Set the minimum size the dialog can be resized to.
      this->PrintPreviewDialog1->MinimumSize = System::Drawing::Size( 375, 250 );
      
      // Set the UseAntiAlias property to true, which will allow the 
      // operating system to smooth fonts.
      this->PrintPreviewDialog1->UseAntiAlias = true;
   }

   void Button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      if ( TreeView1->SelectedNode != nullptr )
      {
         document->DocumentName = TreeView1->SelectedNode->Tag->ToString();
      }

      // Set the PrintPreviewDialog.Document property to
      // the PrintDocument object selected by the user.
      PrintPreviewDialog1->Document = document;
      
      // Call the ShowDialog method. This will trigger the document's
      //  PrintPage event.
      PrintPreviewDialog1->ShowDialog();
   }

   void document_PrintPage( Object^ /*sender*/, System::Drawing::Printing::PrintPageEventArgs^ e )
   {
      
      // Insert code to render the page here.
      // This code will be called when the PrintPreviewDialog.Show 
      // method is called.
      // The following code will render a simple
      // message on the document in the dialog.
      String^ text = "In document_PrintPage method.";
      System::Drawing::Font^ printFont = gcnew System::Drawing::Font( "Arial",35,System::Drawing::FontStyle::Regular );
      e->Graphics->DrawString( text, printFont, System::Drawing::Brushes::Black, 0, 0 );
   }

// Declare the dialog.
internal PrintPreviewDialog PrintPreviewDialog1;

// Declare a PrintDocument object named document.
private System.Drawing.Printing.PrintDocument document =
    new System.Drawing.Printing.PrintDocument();

// Initialize the dialog.
private void InitializePrintPreviewDialog()
{

    // Create a new PrintPreviewDialog using constructor.
    this.PrintPreviewDialog1 = new PrintPreviewDialog();

    //Set the size, location, and name.
    this.PrintPreviewDialog1.ClientSize = 
        new System.Drawing.Size(400, 300);
    this.PrintPreviewDialog1.Location = 
        new System.Drawing.Point(29, 29);
    this.PrintPreviewDialog1.Name = "PrintPreviewDialog1";
    
    // Associate the event-handling method with the 
    // document's PrintPage event.
    this.document.PrintPage += 
        new System.Drawing.Printing.PrintPageEventHandler
        (document_PrintPage);

    // Set the minimum size the dialog can be resized to.
    this.PrintPreviewDialog1.MinimumSize = 
        new System.Drawing.Size(375, 250);

    // Set the UseAntiAlias property to true, which will allow the 
    // operating system to smooth fonts.
    this.PrintPreviewDialog1.UseAntiAlias = true;
}

private void Button1_Click(object sender, System.EventArgs e)
{

    if (TreeView1.SelectedNode != null)

        // Set the PrintDocument object's name to the selectedNode
        // object's  tag, which in this case contains the 
        // fully-qualified name of the document. This value will 
        // show when the dialog reports progress.
    {
        document.DocumentName = TreeView1.SelectedNode.Tag.ToString();
    }

    // Set the PrintPreviewDialog.Document property to
    // the PrintDocument object selected by the user.
    PrintPreviewDialog1.Document = document;

    // Call the ShowDialog method. This will trigger the document's
    //  PrintPage event.
    PrintPreviewDialog1.ShowDialog();
}

private void document_PrintPage(object sender, 
    System.Drawing.Printing.PrintPageEventArgs e)
{

    // Insert code to render the page here.
    // This code will be called when the PrintPreviewDialog.Show 
    // method is called.

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

    e.Graphics.DrawString(text, printFont, 
        System.Drawing.Brushes.Black, 0, 0);
}

' Declare the dialog.
Friend WithEvents PrintPreviewDialog1 As PrintPreviewDialog

' Declare a PrintDocument object named document.
Private WithEvents document As New System.Drawing.Printing.PrintDocument

' Initialize the dialog.
Private Sub InitializePrintPreviewDialog()

    ' Create a new PrintPreviewDialog using constructor.
    Me.PrintPreviewDialog1 = New PrintPreviewDialog

    'Set the size, location, and name.
    Me.PrintPreviewDialog1.ClientSize = New System.Drawing.Size(400, 300)
    Me.PrintPreviewDialog1.Location = New System.Drawing.Point(29, 29)
    Me.PrintPreviewDialog1.Name = "PrintPreviewDialog1"

    ' Set the minimum size the dialog can be resized to.
    Me.PrintPreviewDialog1.MinimumSize = New System.Drawing.Size(375, 250)

    ' Set the UseAntiAlias property to true, which will allow the 
    ' operating system to smooth fonts.
    Me.PrintPreviewDialog1.UseAntiAlias = True
End Sub

Private Sub Button1_Click(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles Button1.Click

    If (TreeView1.SelectedNode IsNot Nothing) Then

        ' Set the PrintDocument object's name to the selectedNode
        ' object's  tag, which in this case contains the 
        ' fully-qualified name of the document. This value will 
        ' show when the dialog reports progress.
        document.DocumentName = TreeView1.SelectedNode.Tag
    End If

    ' Set the PrintPreviewDialog.Document property to
    ' the PrintDocument object selected by the user.
    PrintPreviewDialog1.Document = document

    ' Call the ShowDialog method. This will trigger the document's
    '  PrintPage event.
    PrintPreviewDialog1.ShowDialog()
End Sub

Private Sub document_PrintPage(ByVal sender As Object, _
    ByVal e As System.Drawing.Printing.PrintPageEventArgs) _
        Handles document.PrintPage

    ' Insert code to render the page here.
    ' This code will be called when the PrintPreviewDialog.Show 
    ' method is called.

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

    e.Graphics.DrawString(text, printFont, _
        System.Drawing.Brushes.Black, 0, 0)

End Sub

Opmerkingen

Wanneer u een exemplaar van PrintPreviewDialogmaakt, wordt de Document eigenschap geïnitialiseerd naar null. U kunt de waarde voor deze eigenschap tijdens runtime wijzigen.

Zie ook

• PrintDocument
• PrintPreviewControl