PrintDialog.ShowHelp PrintDialog.ShowHelp PrintDialog.ShowHelp PrintDialog.ShowHelp Property

Definición

Obtiene o establece un valor que indica si se muestra el botón Ayuda.Gets or sets a value indicating whether the Help button is displayed.

public:
 property bool ShowHelp { bool get(); void set(bool value); };
public bool ShowHelp { get; set; }
member this.ShowHelp : bool with get, set
Public Property ShowHelp As Boolean

Valor de propiedad

true Si el ayuda botón se muestra; en caso contrario, false.true if the Help button is displayed; otherwise, false. De manera predeterminada, es false.The default is false.

Ejemplos

En el ejemplo de código siguiente se muestra el uso de la PrintDialog controlar la configuración de la AllowSomePages, ShowHelp, y Document propiedades.The following code example demonstrates the use of the PrintDialog control setting the AllowSomePages, ShowHelp, and Document properties. Para ejecutar este ejemplo pegue el siguiente código en un formulario que contenga un PrintDialog control denominado PrintDialog1 y un botón denominado Button1.To run this example paste the following code in a form that contains a PrintDialog control named PrintDialog1 and a button named Button1. Este ejemplo requiere que el botón Click eventos y el PrintPage eventos de docToPrint se han conectado a los métodos definidos en este ejemplo de control de eventos.This example requires that the button's Click event and the PrintPage event of docToPrint have been connected to the event handling methods defined in this example.

// Declare the PrintDocument object.
System::Drawing::Printing::PrintDocument^ docToPrint;

// This method will set properties on the PrintDialog object and
// then display the dialog.
void Button1_Click( System::Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
   // Allow the user to choose the page range he or she would
   // like to print.
   PrintDialog1->AllowSomePages = true;
   
   // Show the help button.
   PrintDialog1->ShowHelp = true;
   
   // Set the Document property to the PrintDocument for 
   // which the PrintPage Event has been handled. To display the
   // dialog, either this property or the PrinterSettings property 
   // must be set 
   PrintDialog1->Document = docToPrint;
   if ( docToPrint == nullptr )
         System::Windows::Forms::MessageBox::Show(  "null" );

   ;
   ;
   if ( PrintDialog1 == nullptr )
         System::Windows::Forms::MessageBox::Show(  "pnull" );

   ;
   ;
   System::Windows::Forms::DialogResult result = PrintDialog1->ShowDialog();
   System::Windows::Forms::MessageBox::Show( result.ToString() );
   ;
   ;
   
   // If the result is OK then print the document.
   if ( result == ::DialogResult::OK )
   {
      docToPrint->Print();
   }

}

// The PrintDialog will print the document
// by handling the document's PrintPage event.
void document_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 printed document.
   String^ text = "In document_PrintPage method.";
   System::Drawing::Font^ printFont = gcnew System::Drawing::Font( "Arial",35,System::Drawing::FontStyle::Regular );
   
   // Draw the content.
   e->Graphics->DrawString( text, printFont, System::Drawing::Brushes::Black, 10, 10 );
}

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

// This method will set properties on the PrintDialog object and
// then display the dialog.
private void Button1_Click(System.Object sender, 
	System.EventArgs e)
{

	// Allow the user to choose the page range he or she would
	// like to print.
	PrintDialog1.AllowSomePages = true;

	// Show the help button.
	PrintDialog1.ShowHelp = true;

	// Set the Document property to the PrintDocument for 
	// which the PrintPage Event has been handled. To display the
	// dialog, either this property or the PrinterSettings property 
	// must be set 
	PrintDialog1.Document = docToPrint;

	DialogResult result = PrintDialog1.ShowDialog();

	// If the result is OK then print the document.
	if (result==DialogResult.OK)
	{
		docToPrint.Print();
	}
       
}

// The PrintDialog will print the document
// by handling the document's PrintPage event.
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 control is drawn.

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

	// Draw the content.
	e.Graphics.DrawString(text, printFont, 
		System.Drawing.Brushes.Black, 10, 10);
}

' Declare the PrintDocument object.
Private WithEvents docToPrint As New Printing.PrintDocument

' This method will set properties on the PrintDialog object and
' then display the dialog.
Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click

    ' Allow the user to choose the page range he or she would
    ' like to print.
    PrintDialog1.AllowSomePages = True

    ' Show the help button.
    PrintDialog1.ShowHelp = True

    ' Set the Document property to the PrintDocument for 
    ' which the PrintPage Event has been handled. To display the
    ' dialog, either this property or the PrinterSettings property 
    ' must be set 
    PrintDialog1.Document = docToPrint

    Dim result As DialogResult = PrintDialog1.ShowDialog()

    ' If the result is OK then print the document.
    If (result = DialogResult.OK) Then
        docToPrint.Print()
    End If

End Sub

' The PrintDialog will print the document
' by handling the document's PrintPage event.
Private Sub document_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 printed document.
    Dim text As String = "In document_PrintPage method."
    Dim printFont As New System.Drawing.Font _
        ("Arial", 35, System.Drawing.FontStyle.Regular)

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

Comentarios

Esta propiedad se ha marcado como obsoleta en Windows 2000 y no afecta a esto y versiones posteriores de Windows.This property was marked obsolete in Windows 2000 and does not affect this and later versions of Windows.

Se aplica a

Consulte también: