PrintDocument.QueryPageSettings 事件

定义

命名空间:

System.Drawing.Printing

程序集:

System.Drawing.Common.dll

包:

System.Drawing.Common v8.0.0

Source:

PrintDocument.cs

在 PrintPage 事件的紧面前发生。

public:
 event System::Drawing::Printing::QueryPageSettingsEventHandler ^ QueryPageSettings;

public event System.Drawing.Printing.QueryPageSettingsEventHandler QueryPageSettings;

member this.QueryPageSettings : System.Drawing.Printing.QueryPageSettingsEventHandler 

Public Custom Event QueryPageSettings As QueryPageSettingsEventHandler 

事件类型

QueryPageSettingsEventHandler

示例

如果打印机支持该文档，则下面的代码示例将打印具有第一页颜色的文档。 该示例要求已创建名为 PrintDocument 的 printDoc 变量，并 PrintPage 处理 和 QueryPageSettings 事件。 在 事件中PrintPage打印每个页面后，变量currentPageNumber将递增，该事件不显示。

对于此示例， System.Drawing 请使用 和 System.Drawing.Printing 命名空间。

private:
   void MyButtonPrint_OnClick( Object^ sender, System::EventArgs^ e )
   {
      // Set the printer name and ensure it is valid. If not, provide a message to the user.
      printDoc->PrinterSettings->PrinterName = "\\mynetworkprinter";
      if ( printDoc->PrinterSettings->IsValid )
      {
         // If the printer supports printing in color, then override the printer's default behavior.
         if ( printDoc->PrinterSettings->SupportsColor )
         {
            // Set the page default's to not print in color.
            printDoc->DefaultPageSettings->Color = false;
         }

         // Provide a friendly name, set the page number, and print the document.
         printDoc->DocumentName = "My Presentation";
         currentPageNumber = 1;
         printDoc->Print();
      }
      else
      {
         MessageBox::Show( "Printer is not valid" );
      }
   }

   void MyPrintQueryPageSettingsEvent( Object^ sender, QueryPageSettingsEventArgs^ e )
   {
      // Determines if the printer supports printing in color.
      if ( printDoc->PrinterSettings->SupportsColor )
      {
         // If the printer supports color printing, use color.
         if ( currentPageNumber == 1 )
         {
            e->PageSettings->Color = true;
         }
      }
   }

private void MyButtonPrint_OnClick(object sender, System.EventArgs e)
{
    
    // Set the printer name and ensure it is valid. If not, provide a message to the user.
    printDoc.PrinterSettings.PrinterName = "\\mynetworkprinter";

    if (printDoc.PrinterSettings.IsValid) {
    
        // If the printer supports printing in color, then override the printer's default behavior.
        if (printDoc.PrinterSettings.SupportsColor) {

            // Set the page default's to not print in color.
            printDoc.DefaultPageSettings.Color = false;
        }

        // Provide a friendly name, set the page number, and print the document.
        printDoc.DocumentName = "My Presentation";
        currentPageNumber = 1;
        printDoc.Print();
    }
    else {
        MessageBox.Show("Printer is not valid");
    }
}

private void MyPrintQueryPageSettingsEvent(object sender, QueryPageSettingsEventArgs e)
{
    // Determines if the printer supports printing in color.
    if (printDoc.PrinterSettings.SupportsColor) {

        // If the printer supports color printing, use color.
        if (currentPageNumber == 1 ) {

            e.PageSettings.Color = true;
        }
    }    
}

Private Sub MyButtonPrint_OnClick(ByVal sender As Object, ByVal e As System.EventArgs)

    ' Set the printer name and ensure it is valid. If not, provide a message to the user.
    printDoc.PrinterSettings.PrinterName = "\\mynetworkprinter"

    If printDoc.PrinterSettings.IsValid Then

        ' If the printer supports printing in color, then override the printer's default behavior.
        if printDoc.PrinterSettings.SupportsColor then

            ' Set the page default's to not print in color.
            printDoc.DefaultPageSettings.Color = False
        End If

        ' Provide a friendly name, set the page number, and print the document.
        printDoc.DocumentName = "My Presentation"
        currentPageNumber = 1
        printDoc.Print()
    Else
        MessageBox.Show("Printer is not valid")
    End If
End Sub

Private Sub MyPrintQueryPageSettingsEvent(ByVal sender As Object, ByVal e As QueryPageSettingsEventArgs)

    ' Determines if the printer supports printing in color.
    If printDoc.PrinterSettings.SupportsColor Then

        ' If the printer supports color printing, use color.
        If currentPageNumber = 1 Then

            e.PageSettings.Color = True
        End If

    End If
End Sub

注解

可以使用不同的页面设置打印文档的每一页。 可以通过修改 属性的各个属性 QueryPageSettingsEventArgs.PageSettings 或将 属性设置为 PageSettings来设置页面设置。 对 PageSettings 所做的更改仅影响当前页，而不会影响文档的默认页面设置。 还可以通过将 的 QueryPageSettingsEventArgs属性设置为 Canceltrue 来取消打印作业。

若要将事件与事件处理程序相关联，请将 委托的 QueryPageSettingsEventHandler 实例添加到 事件。 每当事件发生时，将调用事件处理程序。 有关使用委托处理事件的详细信息，请参阅 处理和引发事件。

如果使用 QueryPageSettings 事件修改打印机设置，PrintPreviewDialog 控件的性能将不会提高，即使设置了优化配置开关也是如此。 有关详细信息，请参阅 PrintPreviewDialog 控件概述。

另请参阅

• QueryPageSettingsEventHandler
• PrintPageEventArgs
• BeginPrint
• EndPrint
• PrintPage