OutputQuality 枚举

定义

命名空间:

System.Printing

程序集:

ReachFramework.dll

指定打印设备输出质量的类型。

public enum class OutputQuality

public enum OutputQuality

type OutputQuality = 

Public Enum OutputQuality

继承

Object

ValueType

Enum

OutputQuality

字段

Automatic	1	根据打印作业的内容自动选择质量类型。
Draft	2	草稿质量。
Fax	3	传真质量。
High	4	高于正常质量。
Normal	5	正常质量。
Photographic	6	照片质量。 有关详细信息，请参阅“备注”部分中的 OutputQuality.Photographic 相关说明。
Text	7	文本质量。
Unknown	0	该功能（其选项由此枚举表示）设置为未在 打印架构中定义的选项。

示例

以下示例演示如何测试打印机的功能，以及如何配置打印作业以利用它们。 .

// ---------------------- GetPrintTicketFromPrinter -----------------------
/// <summary>
///   Returns a PrintTicket based on the current default printer.</summary>
/// <returns>
///   A PrintTicket for the current local default printer.</returns>
PrintTicket^ GetPrintTicketFromPrinter ()
{
   PrintQueue^ printQueue = nullptr;

   LocalPrintServer^ localPrintServer = gcnew LocalPrintServer();

   // Retrieving collection of local printer on user machine
   PrintQueueCollection^ localPrinterCollection = localPrintServer->GetPrintQueues();

   System::Collections::IEnumerator^ localPrinterEnumerator = localPrinterCollection->GetEnumerator();

   if (localPrinterEnumerator->MoveNext())
   {
      // Get PrintQueue from first available printer
      printQueue = ((PrintQueue^)localPrinterEnumerator->Current);
   } else
   {
      return nullptr;
   }
   // Get default PrintTicket from printer
   PrintTicket^ printTicket = printQueue->DefaultPrintTicket;

   PrintCapabilities^ printCapabilities = printQueue->GetPrintCapabilities();

   // Modify PrintTicket
   if (printCapabilities->CollationCapability->Contains(Collation::Collated))
   {
      printTicket->Collation = Collation::Collated;
   }
   if (printCapabilities->DuplexingCapability->Contains(Duplexing::TwoSidedLongEdge))
   {
      printTicket->Duplexing = Duplexing::TwoSidedLongEdge;
   }
   if (printCapabilities->StaplingCapability->Contains(Stapling::StapleDualLeft))
   {
      printTicket->Stapling = Stapling::StapleDualLeft;
   }
   return printTicket;
};// end:GetPrintTicketFromPrinter()

// ---------------------- GetPrintTicketFromPrinter -----------------------
/// <summary>
///   Returns a PrintTicket based on the current default printer.</summary>
/// <returns>
///   A PrintTicket for the current local default printer.</returns>
private PrintTicket GetPrintTicketFromPrinter()
{
    PrintQueue printQueue = null;

    LocalPrintServer localPrintServer = new LocalPrintServer();

    // Retrieving collection of local printer on user machine
    PrintQueueCollection localPrinterCollection =
        localPrintServer.GetPrintQueues();

    System.Collections.IEnumerator localPrinterEnumerator =
        localPrinterCollection.GetEnumerator();

    if (localPrinterEnumerator.MoveNext())
    {
        // Get PrintQueue from first available printer
        printQueue = (PrintQueue)localPrinterEnumerator.Current;
    }
    else
    {
        // No printer exist, return null PrintTicket
        return null;
    }

    // Get default PrintTicket from printer
    PrintTicket printTicket = printQueue.DefaultPrintTicket;

    PrintCapabilities printCapabilities = printQueue.GetPrintCapabilities();

    // Modify PrintTicket
    if (printCapabilities.CollationCapability.Contains(Collation.Collated))
    {
        printTicket.Collation = Collation.Collated;
    }

    if ( printCapabilities.DuplexingCapability.Contains(
            Duplexing.TwoSidedLongEdge) )
    {
        printTicket.Duplexing = Duplexing.TwoSidedLongEdge;
    }

    if (printCapabilities.StaplingCapability.Contains(Stapling.StapleDualLeft))
    {
        printTicket.Stapling = Stapling.StapleDualLeft;
    }

    return printTicket;
}// end:GetPrintTicketFromPrinter()

' ---------------------- GetPrintTicketFromPrinter -----------------------
''' <summary>
'''   Returns a PrintTicket based on the current default printer.</summary>
''' <returns>
'''   A PrintTicket for the current local default printer.</returns>
Private Function GetPrintTicketFromPrinter() As PrintTicket
    Dim printQueue As PrintQueue = Nothing

    Dim localPrintServer As New LocalPrintServer()

    ' Retrieving collection of local printer on user machine
    Dim localPrinterCollection As PrintQueueCollection = localPrintServer.GetPrintQueues()

    Dim localPrinterEnumerator As System.Collections.IEnumerator = localPrinterCollection.GetEnumerator()

    If localPrinterEnumerator.MoveNext() Then
        ' Get PrintQueue from first available printer
        printQueue = CType(localPrinterEnumerator.Current, PrintQueue)
    Else
        ' No printer exist, return null PrintTicket
        Return Nothing
    End If

    ' Get default PrintTicket from printer
    Dim printTicket As PrintTicket = printQueue.DefaultPrintTicket

    Dim printCapabilities As PrintCapabilities = printQueue.GetPrintCapabilities()

    ' Modify PrintTicket
    If printCapabilities.CollationCapability.Contains(Collation.Collated) Then
        printTicket.Collation = Collation.Collated
    End If

    If printCapabilities.DuplexingCapability.Contains(Duplexing.TwoSidedLongEdge) Then
        printTicket.Duplexing = Duplexing.TwoSidedLongEdge
    End If

    If printCapabilities.StaplingCapability.Contains(Stapling.StapleDualLeft) Then
        printTicket.Stapling = Stapling.StapleDualLeft
    End If

    Return printTicket
End Function ' end:GetPrintTicketFromPrinter()

注解

使用此类型的值主要用于以下目的：

• 作为 集合的成员 OutputQualityCapability （是 的 PrintCapabilities属性），这些值指示打印机支持的输出质量类型。

• 作为 的 属性PrintTicket的值OutputQuality，它们指示打印机生成特定质量。

该值 Unknown 永远不会在 对象的属性 PrintCapabilities 中使用。

切勿将 PrintTicket 属性设置为 Unknown。 如果其他 PrintTicket 某个生成应用程序创建了一个 PrintTicket 文档 ，该文档将输出质量功能设置为无法识别的选项 (即 打印架构) 中未定义的选项，则 PrintTicket 应用程序中使用该文档构造的对象将具有 Unknown 作为 属性的值 OutputQuality 。

PrintTicket尽管 无法继承 和 PrintCapabilities 类，但可以扩展打印架构以识别 在 或 PrintCapabilities 类中PrintTicket未考虑的打印设备功能。 有关详细信息，请参阅 如何：扩展打印架构和创建新的打印系统类。

Notes on OutputQuality.Photographic

摄影值生成输出质量较高的文档。 生成输出质量更好的文档需要更大的打印后台处理程序文件和更长的等待时间。 如果这些副作用是不可取的，则可以改用高值。

另请参阅

• PrintCapabilities
• PrintTicket