PrintQueue.GetPrintCapabilities Methode

Definition

Namespace:

System.Printing

Assembly:

System.Printing.dll

Ruft ein PrintCapabilities-Objekt ab, das die Fähigkeiten des Druckers oder Geräts angibt, wie z. B. Unterstützung für Farbdruck oder doppelseitigen Druck.

Überlädt

GetPrintCapabilities()	Ruft ein PrintCapabilities-Objekt ab, das die Fähigkeiten des Druckers angibt.
GetPrintCapabilities(PrintTicket)	Ruft ein PrintCapabilities-Objekt ab, das die Fähigkeiten des Druckers angibt.

GetPrintCapabilities()

Ruft ein PrintCapabilities-Objekt ab, das die Fähigkeiten des Druckers angibt.

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

public System.Printing.PrintCapabilities GetPrintCapabilities ();

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

Public Function GetPrintCapabilities () As PrintCapabilities

Gibt zurück

PrintCapabilities

Ein PrintCapabilities-Objekt, das die vom Drucker unterstützten Features angibt, wie z. B. doppelseitiger Druck oder automatisches Heften.

Ausnahmen

PrintQueueException

Das PrintCapabilities-Objekt konnte nicht abgerufen werden.

Beispiele

Im folgenden Beispiel wird gezeigt, wie Sie diese Methode beim Zusammenführen von zwei Drucktickets verwenden.

/// <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)

Ruft ein PrintCapabilities-Objekt ab, das die Fähigkeiten des Druckers angibt.

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

Parameter

printTicket

PrintTicket

Ein Druckticket, das als Grundlage dafür dient, welche Druckfähigkeiten zurückgegeben werden.

Gibt zurück

PrintCapabilities

Ein PrintCapabilities-Objekt, das die vom Drucker unterstützten Features angibt, wie z. B. doppelseitiger Druck oder automatisches Heften.

Ausnahmen

PrintQueueException

Das PrintCapabilities-Objekt konnte nicht abgerufen werden.

ArgumentException

printTicket ist nicht wohlgeformt.

Hinweise

Der PrintTicket -Parameter wird als Grundlage zum Erstellen des PrintCapabilities Objekts verwendet. Angenommen, der Drucker unterstützt nur die Medientypen A und B aus eingabe bin 1 und unterstützt nur den Medientyp C aus eingabe bin 2. Wenn der printTicket Parameter Eingabe bin 1 angegeben hat, würde das PrintCapabilities zurückgegebene Objekt alle drei Medientypen enthalten, aber Typ C als "eingeschränkt" melden. Wenn der printTicket Parameter Eingabe bin 2 angegeben hat, würde das PrintCapabilities zurückgegebene Objekt alle drei Medientypen enthalten, aber es würde die Typen A und B als "eingeschränkt" melden. Weitere Informationen zu Einschränkungen finden Sie im Druckschema .

Wenn printTicket ist null, wird verwendet UserPrintTicket .