无法在Windows 8（WPF、.NET 4.0）下打印横向文档
我有一些简单的WPF（.NET 4.0）应用程序，它们在Windows 7和Windows 8.1上的工作方式不同。如果我打印文档并在打印对话框或代码中选择横向，如下图所示，Windows 8.1会将其（在打印机上）截断为纵向。（我以前在Windows7下没有见过这种效果）无法在Windows 8（WPF、.NET 4.0）下打印横向文档,wpf,windows,Wpf,Windows,我有一些简单的WPF（.NET 4.0）应用程序，它们在Windows 7和Windows 8.1上的工作方式不同。如果我打印文档并在打印对话框或代码中选择横向，如下图所示，Windows 8.1会将其（在打印机上）截断为纵向。（我以前在Windows7下没有见过这种效果） 任何想法，Windows中发生了什么变化？实现此功能的诀窍是使用新创建的PageMediaSize实例设置PrintTicket.PageMediaSize属性，该实例指定PageMediaSizeName以及宽度和高度，转
任何想法，Windows中发生了什么变化？实现此功能的诀窍是使用新创建的PageMediaSize实例设置PrintTicket.PageMediaSize属性，该实例指定PageMediaSizeName以及宽度和高度，转换尺寸以匹配方向
PageMediaSizeName mediaSzNm = printDialog.PrintTicket.PageMediaSize.PageMediaSizeName.Value;
System.Windows.Size size = mediaSzNm.SizeInDips(printDialog.PrintTicket.PageOrientation.Value);
printDialog.PrintTicket.PageMediaSize = new PageMediaSize(mediaSzNm, size.Width, size.Height);
static public class PrintingHelper
{
public const int Dpi = 96;
// Get the page size, translated for page orientation
public static Size SizeInDips(this PageMediaSizeName name, PageOrientation orientation)
{
if (orientation == PageOrientation.Landscape)
return new Size(HeightInDips(name), WidthInDips(name));
return new Size(WidthInDips(name), HeightInDips(name));
}
public static double WidthInDips(this PageMediaSizeName name)
{
return WidthInInches(name) * Dpi;
}
public static double HeightInDips(this PageMediaSizeName name)
{
return HeightInInches(name) * Dpi;
}
public static double WidthInInches(this PageMediaSizeName name)
{
if ((name == PageMediaSizeName.NorthAmericaLegal) || (name == PageMediaSizeName.NorthAmericaLetter))
return 8.5;
return 0;
}
public static double HeightInInches(this PageMediaSizeName name)
{
if (name == PageMediaSizeName.NorthAmericaLegal)
return 14.0;
else if (name == PageMediaSizeName.NorthAmericaLetter)
return 11.0;
return 0;
}
}
奇怪的解决方案，但有效 获取
PrintDialogShowDialogusing System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Printing;
using System.Security;
using System.Security.Permissions;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Interop;
using System.Windows.Media;
using System.Windows.Shapes;
using System.Windows.Xps;
using System.Xml;
using MS.Internal.Printing;
using System.Windows.Xps.Serialization;
using System.Windows.Documents;
using System.Windows.Documents.Serialization; // WritingCompletedEventArgs
using MS.Internal.PresentationFramework;
namespace System.Windows.Controls
{
public class CustomPrintDialog
{
#region Constructors
[SecurityCritical]
public
CustomPrintDialog(
)
{
_dialogInvoked = false;
_printQueue = null;
_printTicket = null;
_isPrintableAreaWidthUpdated = false;
_isPrintableAreaHeightUpdated = false;
_pageRangeSelection = PageRangeSelection.AllPages;
_minPage = 1;
_maxPage = 9999;
_userPageRangeEnabled = false;
}
#endregion Constructors
#region Public properties
public PageRangeSelection PageRangeSelection
{
get
{
return _pageRangeSelection;
}
set
{
_pageRangeSelection = value;
}
}
public PageRange PageRange
{
get
{
return _pageRange;
}
set
{
if ((value.PageTo <= 0) || (value.PageFrom <= 0))
{
}
_pageRange = value;
if (_pageRange.PageFrom > _pageRange.PageTo)
{
int temp = _pageRange.PageFrom;
_pageRange.PageFrom = _pageRange.PageTo;
_pageRange.PageTo = temp;
}
}
}
public bool UserPageRangeEnabled
{
get
{
return _userPageRangeEnabled;
}
set
{
_userPageRangeEnabled = value;
}
}
public UInt32 MinPage
{
get
{
return _minPage;
}
set
{
if (_minPage <= 0)
{
}
_minPage = value;
}
}
public UInt32 MaxPage
{
get
{
return _maxPage;
}
set
{
if (_maxPage <= 0)
{
}
_maxPage = value;
}
}
#pragma warning restore 3003
public PrintQueue PrintQueue
{
[SecurityCritical]
get
{
if (_printQueue == null)
{
_printQueue = AcquireDefaultPrintQueue();
}
return _printQueue;
}
[SecurityCritical]
set
{
_printQueue = value;
}
}
public PrintTicket PrintTicket
{
[SecurityCritical]
get
{
if (_printTicket == null)
{
_printTicket = AcquireDefaultPrintTicket(this.PrintQueue);
}
return _printTicket;
}
[SecurityCritical]
set
{
_printTicket = value;
}
}
public
double
PrintableAreaWidth
{
get
{
if (((_isPrintableAreaWidthUpdated == false) && (_isPrintableAreaHeightUpdated == false)) ||
((_isPrintableAreaWidthUpdated == true) && (_isPrintableAreaHeightUpdated == false)))
{
_isPrintableAreaWidthUpdated = true;
_isPrintableAreaHeightUpdated = false;
UpdatePrintableAreaSize();
}
return _printableAreaWidth;
}
}
public
double
PrintableAreaHeight
{
get
{
if (((_isPrintableAreaWidthUpdated == false) && (_isPrintableAreaHeightUpdated == false)) ||
((_isPrintableAreaWidthUpdated == false) && (_isPrintableAreaHeightUpdated == true)))
{
_isPrintableAreaWidthUpdated = false;
_isPrintableAreaHeightUpdated = true;
UpdatePrintableAreaSize();
}
return _printableAreaHeight;
}
}
#endregion Public properties
#region Public methods
[SecurityCritical]
public
void
PrintVisual(
Visual visual,
String description
)
{
if (visual == null)
{
throw new ArgumentNullException("visual");
}
XpsDocumentWriter writer = CreateWriter(description);
writer.Write(visual);
_printableAreaWidth = 0;
_printableAreaHeight = 0;
_isPrintableAreaWidthUpdated = false;
_isPrintableAreaHeightUpdated = false;
_dialogInvoked = false;
}
[SecurityCritical]
public
void
PrintDocument(
DocumentPaginator documentPaginator,
String description
)
{
if (documentPaginator == null)
{
throw new ArgumentNullException("documentPaginator");
}
XpsDocumentWriter writer = CreateWriter(description);
writer.Write(documentPaginator);
_printableAreaWidth = 0;
_printableAreaHeight = 0;
_isPrintableAreaWidthUpdated = false;
_isPrintableAreaHeightUpdated = false;
_dialogInvoked = false;
}
#endregion Public methods
[SecurityCritical]
private
PrintQueue
AcquireDefaultPrintQueue()
{
PrintQueue printQueue = null;
try
{
try
{
LocalPrintServer server = new LocalPrintServer();
printQueue = server.DefaultPrintQueue;
}
catch (PrintSystemException)
{
//
// It is entirely possible for there to be no "default" printer. In this case,
// the printing system throws an exception. We do not want this to propagate
// up. Instead, returning null is fine.
//
printQueue = null;
}
}
finally
{
}
return printQueue;
}
[SecurityCritical]
private
PrintTicket
AcquireDefaultPrintTicket(
PrintQueue printQueue
)
{
PrintTicket printTicket = null;
try
{
try
{
if (printQueue != null)
{
printTicket = printQueue.UserPrintTicket;
if (printTicket == null)
{
printTicket = printQueue.DefaultPrintTicket;
}
}
}
catch (PrintSystemException)
{
//
// The printing subsystem can throw an exception in certain cases when
// the print ticket is unavailable. If it does we will handle this
// below. There is no real need to bubble this up to the application.
//
printTicket = null;
}
}
finally
{
}
//
// If the printing subsystem could not give us a print ticket either due to
// a failure or because a user/system default was not available, then just
// create a blank/empty one.
//
if (printTicket == null)
{
printTicket = new PrintTicket();
}
return printTicket;
}
[SecurityCritical, SecurityTreatAsSafe]
private
void
UpdatePrintableAreaSize(
)
{
PrintQueue printQueue = null;
PrintTicket printTicket = null;
PickCorrectPrintingEnvironment(ref printQueue, ref printTicket);
PrintCapabilities printCap = null;
if (printQueue != null)
{
printCap = printQueue.GetPrintCapabilities(printTicket);
}
// PrintCapabilities OrientedPageMediaWidth/Height are Nullable
if ((printCap != null) &&
(printCap.OrientedPageMediaWidth != null) &&
(printCap.OrientedPageMediaHeight != null))
{
_printableAreaWidth = (double)printCap.OrientedPageMediaWidth;
_printableAreaHeight = (double)printCap.OrientedPageMediaHeight;
}
else
{
// Initialize page size to portrait Letter size.
// This is our fallback if PrintTicket doesn't specify the page size.
_printableAreaWidth = 816;
_printableAreaHeight = 1056;
// PrintTicket's PageMediaSize could be null and PageMediaSize Width/Height are Nullable
if ((printTicket.PageMediaSize != null) &&
(printTicket.PageMediaSize.Width != null) &&
(printTicket.PageMediaSize.Height != null))
{
_printableAreaWidth = (double)printTicket.PageMediaSize.Width;
_printableAreaHeight = (double)printTicket.PageMediaSize.Height;
}
// If we are using PrintTicket's PageMediaSize dimensions to populate the widht/height values,
// we need to adjust them based on current orientation. PrintTicket's PageOrientation is Nullable.
if (printTicket.PageOrientation != null)
{
PageOrientation orientation = (PageOrientation)printTicket.PageOrientation;
// need to swap width/height in landscape orientation
if ((orientation == PageOrientation.Landscape) ||
(orientation == PageOrientation.ReverseLandscape))
{
double t = _printableAreaWidth;
_printableAreaWidth = _printableAreaHeight;
_printableAreaHeight = t;
}
}
}
}
[SecurityCritical, SecurityTreatAsSafe]
private
XpsDocumentWriter
CreateWriter(
String description
)
{
PrintQueue printQueue = null;
PrintTicket printTicket = null;
XpsDocumentWriter writer = null;
PickCorrectPrintingEnvironment(ref printQueue, ref printTicket);
try
{
if (printQueue != null)
{
printQueue.CurrentJobSettings.Description = description;
}
writer = PrintQueue.CreateXpsDocumentWriter(printQueue);
PrintDlgPrintTicketEventHandler eventHandler = new PrintDlgPrintTicketEventHandler(printTicket);
writer.WritingPrintTicketRequired +=
new WritingPrintTicketRequiredEventHandler(eventHandler.SetPrintTicket);
}
finally
{
}
return writer;
}
[SecurityCritical]
private
void
PickCorrectPrintingEnvironment(
ref PrintQueue printQueue,
ref PrintTicket printTicket
)
{
if (_dialogInvoked == false)
{
//
// If the dialog has not been invoked then the user needs printing permissions.
// If the demand succeeds then they can print. If the demand fails, then we
// tell them that the print dialog must be displayed first by throwing a dialog
// exception.
//
try
{
}
catch (SecurityException)
{
}
}
//
// If the default print queue and print ticket have not already
// been selected then update them now since we need them.
//
// NOTE: If this code gets called then we know the dialog has never
// been invoked but the above demand was satisfied. In this
// case we want to just pickup the user defaults.
//
if (_printQueue == null)
{
_printQueue = AcquireDefaultPrintQueue();
}
if (_printTicket == null)
{
_printTicket = AcquireDefaultPrintTicket(_printQueue);
}
//
// We should have valid print queue and print ticket objects to
// return now. As a note, a null PrintQueue is valid for this
// since the dialog will automatically pick up the user default
// printer for us.
//
printQueue = _printQueue;
printTicket = _printTicket;
}
#region Private data
/// <SecurityNote>
/// The PrintTicket is critical and not obtainable from a partial
/// trust application unless they can satisfy a printing permission
/// demand.
/// </SecurityNote>
[SecurityCritical]
private
PrintTicket _printTicket;
/// <SecurityNote>
/// The PrintQueue is critical and not obtainable from a partial
/// trust application unless they can satisfy a printing permission
/// demand.
/// </SecurityNote>
[SecurityCritical]
private
PrintQueue _printQueue;
/// <SecurityNote>
/// This variable is used to determine whether a user actually invoked
/// and dismissed the dialog prior to printing. In a partial trust app,
/// we can safely perform the necessary asserts to print as long as the
/// user said printing was okay.
/// </SecurityNote>
[SecurityCritical]
private
bool _dialogInvoked;
private
PageRangeSelection _pageRangeSelection;
private
PageRange _pageRange;
private
bool _userPageRangeEnabled;
private
UInt32 _minPage;
private
UInt32 _maxPage;
private
double _printableAreaWidth;
private
double _printableAreaHeight;
private
bool _isPrintableAreaWidthUpdated;
private
bool _isPrintableAreaHeightUpdated;
#endregion Private data
#region Internal classes
internal class PrintDlgPrintTicketEventHandler
{
#region Constructor
/// <SecurityNote>
/// Critical - PrintTicket argument is critical because it is defined in the none APTCA assembly ReachFramework.dll
/// TreatAsSafe - PrintTicket type is safe
/// </SecurityNote>
[SecurityCritical, SecurityTreatAsSafe]
public
PrintDlgPrintTicketEventHandler(
PrintTicket printTicket
)
{
_printTicket = printTicket;
}
#endregion Constructor
#region Public Methods
/// <SecurityNote>
/// Critical - Makes use of PrintTicket type which is critical because it is defined in the none APTCA assembly ReachFramework.dll
/// - Makes use of PrintTicketLevel type which is critical because it is defined in the none APTCA assembly ReachFramework.dll
/// TreatAsSafe - PrintTicket type is safe
/// </SecurityNote>
[SecurityCritical, SecurityTreatAsSafe]
public
void
SetPrintTicket(
Object sender,
WritingPrintTicketRequiredEventArgs args
)
{
if (args.CurrentPrintTicketLevel == PrintTicketLevel.FixedDocumentSequencePrintTicket)
{
args.CurrentPrintTicket = _printTicket;
}
}
#endregion Public Methods
#region Private Data
private
PrintTicket _printTicket;
#endregion Private Data
};
#endregion Internal classes
}
}
有人能解释一下它是如何工作的吗？有什么想法吗？这是一个非常恼人的情况：）我尝试了这个代码，但它没有帮助。size的计算值等于PrintTicket.PageMediaSize的初始值，即{NorthAmericaLetter（816 x 1056）}。请再次调试代码。在设置printDialog.PrintTicket.PageMediaSize之前，您应该看到printDialog.PrintTicket.PageMediaSize.Height=1056和printDialog.PrintTicket.PageMediaSize.Width=816，即使页面方向设置为横向。设置printDialog.PrintTicket.PageMediaSize后，您应该会看到printDialog.PrintTicket.PageMediaSize.Height为816，printDialog.PrintTicket.PageMediaSize.Width为1056。是的，您是对的，我没有注意到宽度和高度开关的位置，但在printDialog中按“确定”后，它们被覆盖，因此，在调用printDialog.PrintTicket.PageMediaSize（…）之前，我尝试分配printDialog.PrintTicket.PageMediaSize=new PageMediaSize（mediaSzNm，1122.14173228346794.07874015748），但也没有帮助。。。也许我需要做一些进一步的实验。文档仍在我的真实打印机上，在XPS打印机上是纵向的。（mediaSzNm==“ISOA4”此处）查看我的打印对话框看起来像这样，我没有注意到您在显示打印对话框之前设置了这些值。对话框几乎肯定会覆盖您的选择，因此在对话框之后设置PageMediaSize（可能还有PageOrientation）应该会有所帮助。还有许多不同的PrintTicket实例（PrintQueue.DefaultPrintTicket、PrintQueue.UserPrintTicket、PrintQueue.CurrentJobSettings.CurrentPrintTicket）-您可以尝试在PrintDocument（）之前设置PrintQueue.CurrentJobSettings.CurrentPrintTicket属性，看看这是否有什么不同。
using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Printing;
using System.Security;
using System.Security.Permissions;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Interop;
using System.Windows.Media;
using System.Windows.Shapes;
using System.Windows.Xps;
using System.Xml;
using MS.Internal.Printing;
using System.Windows.Xps.Serialization;
using System.Windows.Documents;
using System.Windows.Documents.Serialization; // WritingCompletedEventArgs
using MS.Internal.PresentationFramework;
namespace System.Windows.Controls
{
public class CustomPrintDialog
{
#region Constructors
[SecurityCritical]
public
CustomPrintDialog(
)
{
_dialogInvoked = false;
_printQueue = null;
_printTicket = null;
_isPrintableAreaWidthUpdated = false;
_isPrintableAreaHeightUpdated = false;
_pageRangeSelection = PageRangeSelection.AllPages;
_minPage = 1;
_maxPage = 9999;
_userPageRangeEnabled = false;
}
#endregion Constructors
#region Public properties
public PageRangeSelection PageRangeSelection
{
get
{
return _pageRangeSelection;
}
set
{
_pageRangeSelection = value;
}
}
public PageRange PageRange
{
get
{
return _pageRange;
}
set
{
if ((value.PageTo <= 0) || (value.PageFrom <= 0))
{
}
_pageRange = value;
if (_pageRange.PageFrom > _pageRange.PageTo)
{
int temp = _pageRange.PageFrom;
_pageRange.PageFrom = _pageRange.PageTo;
_pageRange.PageTo = temp;
}
}
}
public bool UserPageRangeEnabled
{
get
{
return _userPageRangeEnabled;
}
set
{
_userPageRangeEnabled = value;
}
}
public UInt32 MinPage
{
get
{
return _minPage;
}
set
{
if (_minPage <= 0)
{
}
_minPage = value;
}
}
public UInt32 MaxPage
{
get
{
return _maxPage;
}
set
{
if (_maxPage <= 0)
{
}
_maxPage = value;
}
}
#pragma warning restore 3003
public PrintQueue PrintQueue
{
[SecurityCritical]
get
{
if (_printQueue == null)
{
_printQueue = AcquireDefaultPrintQueue();
}
return _printQueue;
}
[SecurityCritical]
set
{
_printQueue = value;
}
}
public PrintTicket PrintTicket
{
[SecurityCritical]
get
{
if (_printTicket == null)
{
_printTicket = AcquireDefaultPrintTicket(this.PrintQueue);
}
return _printTicket;
}
[SecurityCritical]
set
{
_printTicket = value;
}
}
public
double
PrintableAreaWidth
{
get
{
if (((_isPrintableAreaWidthUpdated == false) && (_isPrintableAreaHeightUpdated == false)) ||
((_isPrintableAreaWidthUpdated == true) && (_isPrintableAreaHeightUpdated == false)))
{
_isPrintableAreaWidthUpdated = true;
_isPrintableAreaHeightUpdated = false;
UpdatePrintableAreaSize();
}
return _printableAreaWidth;
}
}
public
double
PrintableAreaHeight
{
get
{
if (((_isPrintableAreaWidthUpdated == false) && (_isPrintableAreaHeightUpdated == false)) ||
((_isPrintableAreaWidthUpdated == false) && (_isPrintableAreaHeightUpdated == true)))
{
_isPrintableAreaWidthUpdated = false;
_isPrintableAreaHeightUpdated = true;
UpdatePrintableAreaSize();
}
return _printableAreaHeight;
}
}
#endregion Public properties
#region Public methods
[SecurityCritical]
public
void
PrintVisual(
Visual visual,
String description
)
{
if (visual == null)
{
throw new ArgumentNullException("visual");
}
XpsDocumentWriter writer = CreateWriter(description);
writer.Write(visual);
_printableAreaWidth = 0;
_printableAreaHeight = 0;
_isPrintableAreaWidthUpdated = false;
_isPrintableAreaHeightUpdated = false;
_dialogInvoked = false;
}
[SecurityCritical]
public
void
PrintDocument(
DocumentPaginator documentPaginator,
String description
)
{
if (documentPaginator == null)
{
throw new ArgumentNullException("documentPaginator");
}
XpsDocumentWriter writer = CreateWriter(description);
writer.Write(documentPaginator);
_printableAreaWidth = 0;
_printableAreaHeight = 0;
_isPrintableAreaWidthUpdated = false;
_isPrintableAreaHeightUpdated = false;
_dialogInvoked = false;
}
#endregion Public methods
[SecurityCritical]
private
PrintQueue
AcquireDefaultPrintQueue()
{
PrintQueue printQueue = null;
try
{
try
{
LocalPrintServer server = new LocalPrintServer();
printQueue = server.DefaultPrintQueue;
}
catch (PrintSystemException)
{
//
// It is entirely possible for there to be no "default" printer. In this case,
// the printing system throws an exception. We do not want this to propagate
// up. Instead, returning null is fine.
//
printQueue = null;
}
}
finally
{
}
return printQueue;
}
[SecurityCritical]
private
PrintTicket
AcquireDefaultPrintTicket(
PrintQueue printQueue
)
{
PrintTicket printTicket = null;
try
{
try
{
if (printQueue != null)
{
printTicket = printQueue.UserPrintTicket;
if (printTicket == null)
{
printTicket = printQueue.DefaultPrintTicket;
}
}
}
catch (PrintSystemException)
{
//
// The printing subsystem can throw an exception in certain cases when
// the print ticket is unavailable. If it does we will handle this
// below. There is no real need to bubble this up to the application.
//
printTicket = null;
}
}
finally
{
}
//
// If the printing subsystem could not give us a print ticket either due to
// a failure or because a user/system default was not available, then just
// create a blank/empty one.
//
if (printTicket == null)
{
printTicket = new PrintTicket();
}
return printTicket;
}
[SecurityCritical, SecurityTreatAsSafe]
private
void
UpdatePrintableAreaSize(
)
{
PrintQueue printQueue = null;
PrintTicket printTicket = null;
PickCorrectPrintingEnvironment(ref printQueue, ref printTicket);
PrintCapabilities printCap = null;
if (printQueue != null)
{
printCap = printQueue.GetPrintCapabilities(printTicket);
}
// PrintCapabilities OrientedPageMediaWidth/Height are Nullable
if ((printCap != null) &&
(printCap.OrientedPageMediaWidth != null) &&
(printCap.OrientedPageMediaHeight != null))
{
_printableAreaWidth = (double)printCap.OrientedPageMediaWidth;
_printableAreaHeight = (double)printCap.OrientedPageMediaHeight;
}
else
{
// Initialize page size to portrait Letter size.
// This is our fallback if PrintTicket doesn't specify the page size.
_printableAreaWidth = 816;
_printableAreaHeight = 1056;
// PrintTicket's PageMediaSize could be null and PageMediaSize Width/Height are Nullable
if ((printTicket.PageMediaSize != null) &&
(printTicket.PageMediaSize.Width != null) &&
(printTicket.PageMediaSize.Height != null))
{
_printableAreaWidth = (double)printTicket.PageMediaSize.Width;
_printableAreaHeight = (double)printTicket.PageMediaSize.Height;
}
// If we are using PrintTicket's PageMediaSize dimensions to populate the widht/height values,
// we need to adjust them based on current orientation. PrintTicket's PageOrientation is Nullable.
if (printTicket.PageOrientation != null)
{
PageOrientation orientation = (PageOrientation)printTicket.PageOrientation;
// need to swap width/height in landscape orientation
if ((orientation == PageOrientation.Landscape) ||
(orientation == PageOrientation.ReverseLandscape))
{
double t = _printableAreaWidth;
_printableAreaWidth = _printableAreaHeight;
_printableAreaHeight = t;
}
}
}
}
[SecurityCritical, SecurityTreatAsSafe]
private
XpsDocumentWriter
CreateWriter(
String description
)
{
PrintQueue printQueue = null;
PrintTicket printTicket = null;
XpsDocumentWriter writer = null;
PickCorrectPrintingEnvironment(ref printQueue, ref printTicket);
try
{
if (printQueue != null)
{
printQueue.CurrentJobSettings.Description = description;
}
writer = PrintQueue.CreateXpsDocumentWriter(printQueue);
PrintDlgPrintTicketEventHandler eventHandler = new PrintDlgPrintTicketEventHandler(printTicket);
writer.WritingPrintTicketRequired +=
new WritingPrintTicketRequiredEventHandler(eventHandler.SetPrintTicket);
}
finally
{
}
return writer;
}
[SecurityCritical]
private
void
PickCorrectPrintingEnvironment(
ref PrintQueue printQueue,
ref PrintTicket printTicket
)
{
if (_dialogInvoked == false)
{
//
// If the dialog has not been invoked then the user needs printing permissions.
// If the demand succeeds then they can print. If the demand fails, then we
// tell them that the print dialog must be displayed first by throwing a dialog
// exception.
//
try
{
}
catch (SecurityException)
{
}
}
//
// If the default print queue and print ticket have not already
// been selected then update them now since we need them.
//
// NOTE: If this code gets called then we know the dialog has never
// been invoked but the above demand was satisfied. In this
// case we want to just pickup the user defaults.
//
if (_printQueue == null)
{
_printQueue = AcquireDefaultPrintQueue();
}
if (_printTicket == null)
{
_printTicket = AcquireDefaultPrintTicket(_printQueue);
}
//
// We should have valid print queue and print ticket objects to
// return now. As a note, a null PrintQueue is valid for this
// since the dialog will automatically pick up the user default
// printer for us.
//
printQueue = _printQueue;
printTicket = _printTicket;
}
#region Private data
/// <SecurityNote>
/// The PrintTicket is critical and not obtainable from a partial
/// trust application unless they can satisfy a printing permission
/// demand.
/// </SecurityNote>
[SecurityCritical]
private
PrintTicket _printTicket;
/// <SecurityNote>
/// The PrintQueue is critical and not obtainable from a partial
/// trust application unless they can satisfy a printing permission
/// demand.
/// </SecurityNote>
[SecurityCritical]
private
PrintQueue _printQueue;
/// <SecurityNote>
/// This variable is used to determine whether a user actually invoked
/// and dismissed the dialog prior to printing. In a partial trust app,
/// we can safely perform the necessary asserts to print as long as the
/// user said printing was okay.
/// </SecurityNote>
[SecurityCritical]
private
bool _dialogInvoked;
private
PageRangeSelection _pageRangeSelection;
private
PageRange _pageRange;
private
bool _userPageRangeEnabled;
private
UInt32 _minPage;
private
UInt32 _maxPage;
private
double _printableAreaWidth;
private
double _printableAreaHeight;
private
bool _isPrintableAreaWidthUpdated;
private
bool _isPrintableAreaHeightUpdated;
#endregion Private data
#region Internal classes
internal class PrintDlgPrintTicketEventHandler
{
#region Constructor
/// <SecurityNote>
/// Critical - PrintTicket argument is critical because it is defined in the none APTCA assembly ReachFramework.dll
/// TreatAsSafe - PrintTicket type is safe
/// </SecurityNote>
[SecurityCritical, SecurityTreatAsSafe]
public
PrintDlgPrintTicketEventHandler(
PrintTicket printTicket
)
{
_printTicket = printTicket;
}
#endregion Constructor
#region Public Methods
/// <SecurityNote>
/// Critical - Makes use of PrintTicket type which is critical because it is defined in the none APTCA assembly ReachFramework.dll
/// - Makes use of PrintTicketLevel type which is critical because it is defined in the none APTCA assembly ReachFramework.dll
/// TreatAsSafe - PrintTicket type is safe
/// </SecurityNote>
[SecurityCritical, SecurityTreatAsSafe]
public
void
SetPrintTicket(
Object sender,
WritingPrintTicketRequiredEventArgs args
)
{
if (args.CurrentPrintTicketLevel == PrintTicketLevel.FixedDocumentSequencePrintTicket)
{
args.CurrentPrintTicket = _printTicket;
}
}
#endregion Public Methods
#region Private Data
private
PrintTicket _printTicket;
#endregion Private Data
};
#endregion Internal classes
}
}
var pd = new CustomPrintDialog
{
PrintQueue = new PrintQueue(new PrintServer(), "THERMAL Receipt Printer"),
PrintTicket = { PageOrientation = PageOrientation.Portrait }
};
pd.PrintVisual(this, "asdsa");