PrintQueue.GetPrintCapabilities Méthode

Définition

Espace de noms:

System.Printing

Assembly:

System.Printing.dll

Obtient un objet PrintCapabilities qui identifie les fonctionnalités de l'imprimante ou du périphérique, telles que l'impression en couleur ou la fonction d'impression recto-verso.

Surcharges

GetPrintCapabilities()	Obtient un objet PrintCapabilities qui identifie les fonctionnalités de l'imprimante.
GetPrintCapabilities(PrintTicket)	Obtient un objet PrintCapabilities qui identifie les fonctionnalités de l'imprimante.

GetPrintCapabilities()

Obtient un objet PrintCapabilities qui identifie les fonctionnalités de l'imprimante.

public:
 System::Printing::PrintCapabilities ^ GetPrintCapabilities();

public System.Printing.PrintCapabilities GetPrintCapabilities ();

member this.GetPrintCapabilities : unit -> System.Printing.PrintCapabilities

Public Function GetPrintCapabilities () As PrintCapabilities

Retours

PrintCapabilities

Objet PrintCapabilities qui spécifie ce que l'imprimante peut et ne peut pas faire, tel que la copie recto-verso ou l'agrafage automatique.

Exceptions

PrintQueueException

Un objet PrintCapabilities n'a pas pu être récupéré.

Exemples

L’exemple suivant montre comment utiliser cette méthode lors de la fusion de deux tickets d’impression.

/// <summary>
/// Changes the user-default PrintTicket setting of the specified print queue.
/// </summary>
/// <param name="queue">the printer whose user-default PrintTicket setting needs to be changed</param>
static private void ChangePrintTicketSetting(PrintQueue queue)
{
    //
    // Obtain the printer's PrintCapabilities so we can determine whether or not
    // duplexing printing is supported by the printer.
    //
    PrintCapabilities printcap = queue.GetPrintCapabilities();

    //
    // The printer's duplexing capability is returned as a read-only collection of duplexing options
    // that can be supported by the printer. If the collection returned contains the duplexing
    // option we want to set, it means the duplexing option we want to set is supported by the printer,
    // so we can make the user-default PrintTicket setting change.
    //
    if (printcap.DuplexingCapability.Contains(Duplexing.TwoSidedLongEdge))
    {
        //
        // To change the user-default PrintTicket, we can first create a delta PrintTicket with
        // the new duplexing setting.
        //
        PrintTicket deltaTicket = new PrintTicket();
        deltaTicket.Duplexing = Duplexing.TwoSidedLongEdge;

        //
        // Then merge the delta PrintTicket onto the printer's current user-default PrintTicket,
        // and validate the merged PrintTicket to get the new PrintTicket we want to set as the
        // printer's new user-default PrintTicket.
        //
        ValidationResult result = queue.MergeAndValidatePrintTicket(queue.UserPrintTicket, deltaTicket);

        //
        // The duplexing option we want to set could be constrained by other PrintTicket settings
        // or device settings. We can check the validated merged PrintTicket to see whether the
        // the validation process has kept the duplexing option we want to set unchanged.
        //
        if (result.ValidatedPrintTicket.Duplexing == Duplexing.TwoSidedLongEdge)
        {
            //
            // Set the printer's user-default PrintTicket and commit the set operation.
            //
            queue.UserPrintTicket = result.ValidatedPrintTicket;
            queue.Commit();
            Console.WriteLine("PrintTicket new duplexing setting is set on '{0}'.", queue.FullName);
        }
        else
        {
            //
            // The duplexing option we want to set has been changed by the validation process
            // when it was resolving setting constraints.
            //
            Console.WriteLine("PrintTicket new duplexing setting is constrained on '{0}'.", queue.FullName);
        }
    }
    else
    {
        //
        // If the printer doesn't support the duplexing option we want to set, skip it.
        //
        Console.WriteLine("PrintTicket new duplexing setting is not supported on '{0}'.", queue.FullName);
    }
}

''' <summary>
''' Changes the user-default PrintTicket setting of the specified print queue.
''' </summary>
''' <param name="queue">the printer whose user-default PrintTicket setting needs to be changed</param>
Private Shared Sub ChangePrintTicketSetting(ByVal queue As PrintQueue)
    '
    ' Obtain the printer's PrintCapabilities so we can determine whether or not
    ' duplexing printing is supported by the printer.
    '
    Dim printcap As PrintCapabilities = queue.GetPrintCapabilities()

    '
    ' The printer's duplexing capability is returned as a read-only collection of duplexing options
    ' that can be supported by the printer. If the collection returned contains the duplexing
    ' option we want to set, it means the duplexing option we want to set is supported by the printer,
    ' so we can make the user-default PrintTicket setting change.
    '
    If printcap.DuplexingCapability.Contains(Duplexing.TwoSidedLongEdge) Then
        '
        ' To change the user-default PrintTicket, we can first create a delta PrintTicket with
        ' the new duplexing setting.
        '
        Dim deltaTicket As New PrintTicket()
        deltaTicket.Duplexing = Duplexing.TwoSidedLongEdge

        '
        ' Then merge the delta PrintTicket onto the printer's current user-default PrintTicket,
        ' and validate the merged PrintTicket to get the new PrintTicket we want to set as the
        ' printer's new user-default PrintTicket.
        '
        Dim result As ValidationResult = queue.MergeAndValidatePrintTicket(queue.UserPrintTicket, deltaTicket)

        '
        ' The duplexing option we want to set could be constrained by other PrintTicket settings
        ' or device settings. We can check the validated merged PrintTicket to see whether the
        ' the validation process has kept the duplexing option we want to set unchanged.
        '
        If result.ValidatedPrintTicket.Duplexing = Duplexing.TwoSidedLongEdge Then
            '
            ' Set the printer's user-default PrintTicket and commit the set operation.
            '
            queue.UserPrintTicket = result.ValidatedPrintTicket
            queue.Commit()
            Console.WriteLine("PrintTicket new duplexing setting is set on '{0}'.", queue.FullName)
        Else
            '
            ' The duplexing option we want to set has been changed by the validation process
            ' when it was resolving setting constraints.
            '
            Console.WriteLine("PrintTicket new duplexing setting is constrained on '{0}'.", queue.FullName)
        End If
    Else
        '
        ' If the printer doesn't support the duplexing option we want to set, skip it.
        '
        Console.WriteLine("PrintTicket new duplexing setting is not supported on '{0}'.", queue.FullName)
    End If
End Sub

GetPrintCapabilities(PrintTicket)

Obtient un objet PrintCapabilities qui identifie les fonctionnalités de l'imprimante.

public:
 System::Printing::PrintCapabilities ^ GetPrintCapabilities(System::Printing::PrintTicket ^ printTicket);

public System.Printing.PrintCapabilities GetPrintCapabilities (System.Printing.PrintTicket printTicket);

member this.GetPrintCapabilities : System.Printing.PrintTicket -> System.Printing.PrintCapabilities

Public Function GetPrintCapabilities (printTicket As PrintTicket) As PrintCapabilities

Paramètres

printTicket

PrintTicket

Ticket d'impression qui fournit la base sur laquelle les fonctionnalités de l'imprimante sont signalées.

Retours

PrintCapabilities

Objet PrintCapabilities qui spécifie ce que l'imprimante peut et ne peut pas faire, tel que la copie recto-verso ou l'agrafage automatique.

Exceptions

PrintQueueException

Un objet PrintCapabilities n'a pas pu être récupéré.

ArgumentException

printTicket n'est pas de forme correcte.

Remarques

Le PrintTicket paramètre est utilisé comme base sur laquelle construire l’objet PrintCapabilities . Par exemple, supposons que l’imprimante ne prenait en charge que les types de média A et B à partir du bac d’entrée 1, et qu’elle prenait uniquement en charge le type de média C de la classe d’entrée 2. Si le printTicket paramètre a spécifié le bac d’entrée 1, l’objet PrintCapabilities retourné inclut les trois types de média, mais il signale le type C comme « contraint ». Si le paramètre a spécifié le printTicket bac d’entrée 2, l’objet PrintCapabilities retourné inclut les trois types de média, mais signale les types A et B comme « contraints ». Pour plus d’informations sur les contraintes, consultez Le schéma d’impression.

Si printTicket a la valeur null, le UserPrintTicket est utilisé.