• Api Documentation
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  • pdftron
    • PDFNet
    • PDFNet.CharacterOrdering
    • PDFNet.CMSType
    • PDFNet.ConnectionErrorHandlingMode
    • PDFNet.ConnectionErrorProcDelegate
  • pdftron.Common
    • ByteRange
    • Matrix2D
    • PDFNetException
    • PDFNetException.ErrorCodes
    • ProgressMonitor
  • pdftron.Crypto
    • AlgorithmIdentifier
    • AlgorithmParams
    • DigestAlgorithm
    • DigestAlgorithm.Type
    • ObjectIdentifier
    • ObjectIdentifier.Predefined
    • RSASSAPSSParams
    • X501AttributeTypeAndValue
    • X501DistinguishedName
    • X509Certificate
    • X509Extension
  • pdftron.FDF
    • FDFDoc
    • FDFField
    • FDFFieldIterator
    • XFDFExportOptions
  • pdftron.Filters
    • ASCII85Encode
    • Filter
    • Filter.ReferencePos
    • FilterReader
    • FilterWriter
    • FlateEncode
    • MappedFile
    • MappedFile.OpenMode
    • MemoryFilter
    • StreamAdapterFilter
  • pdftron.Layout
    • ContentElement
    • ContentNode
    • ContentNodeIterator
    • FlowDocument
    • List
    • List.NumberFormat
    • ListItem
    • Paragraph
    • Paragraph.TextJustification
    • Table
    • TableCell
    • TableCell.CellAlignmentHorizontal
    • TableCell.CellAlignmentVertical
    • TableRow
    • TextRun
    • TextStyledElement
  • pdftron.PDF
    • Action
    • Action.FormActionFlag
    • Action.Type
    • ActionParameter
    • AdvancedImagingConvertOptions
    • AdvancedImagingModule
    • Annot
    • Annot.AnnotationState
    • Annot.BorderStyle
    • Annot.BorderStyle.Style
    • Annot.EventType
    • Annot.Flag
    • Annot.Type
    • Bookmark
    • CADConvertOptions
    • CADConvertOptions.LayoutSortOrder
    • CADModule
    • CancelRequestRenderThread
    • CharData
    • CharIterator
    • CMSSignatureOptions
    • ColorPt
    • ColorSpace
    • ColorSpace.Type
    • ContentReplacer
    • ConversionOptions
    • Convert
    • Convert.EPUBOutputOptions
    • Convert.ExcelOutputOptions
    • Convert.ExcelOutputOptions.SearchableImageSetting
    • Convert.FlattenFlag
    • Convert.FlattenThresholdFlag
    • Convert.HTMLOutputOptions
    • Convert.HTMLOutputOptions.ContentReflowSetting
    • Convert.HTMLOutputOptions.SearchableImageSetting
    • Convert.OutputOptionsOCR
    • Convert.OutputOptionsOCR.LanguageChoice
    • Convert.OutputOptionsOCR.PreferredOCREngine
    • Convert.PowerPointOutputOptions
    • Convert.PowerPointOutputOptions.SearchableImageSetting
    • Convert.Printer
    • Convert.Printer.Mode
    • Convert.SVGOutputOptions
    • Convert.TiffOutputOptions
    • Convert.WordOutputOptions
    • Convert.WordOutputOptions.SearchableImageSetting
    • Convert.WordOutputOptions.WordOutputFormat
    • Convert.WPFConverterOptions
    • Convert.WPFConverterOptions.DrawHeaderFooter
    • Convert.XODOutputOptions
    • Convert.XODOutputOptions.AnnotationOutputFlag
    • Convert.XPSOutputCommonOptions
    • Convert.XPSOutputOptions
    • CubicCurveBuilder
    • DataExtractionModule
    • DataExtractionModule.DataExtractionEngine
    • DataExtractionOptions
    • Date
    • Destination
    • Destination.FitType
    • DiffOptions
    • DigitalSignatureField
    • DigitalSignatureField.DocumentPermissions
    • DigitalSignatureField.FieldPermissions
    • DigitalSignatureField.SubFilterType
    • DigitalSignatureFieldIterator
    • DisallowedChange
    • DisallowedChange.Type
    • DocumentConversion
    • DocumentConversionResult
    • DownloadedType
    • Element
    • Element.Type
    • ElementBuilder
    • ElementReader
    • ElementWriter
    • ElementWriter.WriteMode
    • EmbeddedTimestampVerificationResult
    • Field
    • Field.EventType
    • Field.Flag
    • Field.TextJustification
    • Field.Type
    • FieldIterator
    • FileSpec
    • Flattener
    • Flattener.FlattenMode
    • Flattener.Threshold
    • Font
    • Font.Encoding
    • Font.StandardType1Font
    • Font.Type
    • FontCharCodeIterator
    • Function
    • Function.Type
    • GeometryCollection
    • GeometryCollectionSnappingMode
    • GSChangesIterator
    • GState
    • GState.BlendMode
    • GState.GStateAttribute
    • GState.LineCap
    • GState.LineJoin
    • GState.RenderingIntent
    • GState.TextRenderingMode
    • Highlights
    • HTML2PDF
    • HTML2PDF.Proxy
    • HTML2PDF.Proxy.Type
    • HTML2PDF.TOCSettings
    • HTML2PDF.WebPageSettings
    • HTML2PDF.WebPageSettings.ErrorHandling
    • HTTPRequestOptions
    • Image
    • Image.InputFilter
    • Image2RGB
    • KeyStrokeActionResult
    • KeyStrokeEventData
    • MergeXFDFOptions
    • OCRModule
    • OCROptions
    • OfficeToPDFOptions
    • OfficeToPDFOptions.StructureTagLevel
    • Optimizer
    • Optimizer.ImageSettings
    • Optimizer.ImageSettings.CompressionMode
    • Optimizer.ImageSettings.DownsampleMode
    • Optimizer.MonoImageSettings
    • Optimizer.MonoImageSettings.CompressionMode
    • Optimizer.MonoImageSettings.DownsampleMode
    • Optimizer.OptimizerSettings
    • Optimizer.TextSettings
    • OptionsBase
    • Page
    • Page.Box
    • Page.EventType
    • Page.Rotate
    • PageIterator
    • PageLabel
    • PageLabel.Style
    • PageSet
    • PageSet.Filter
    • PathData
    • PathData.PathSegmentType
    • PatternColor
    • PatternColor.TilingType
    • PatternColor.Type
    • PDF2HtmlReflowParagraphsModule
    • PDF2WordModule
    • PDFDC
    • PDFDCEX
    • PDFDoc
    • PDFDoc.EventType
    • PDFDoc.ExtractFlag
    • PDFDoc.InsertFlag
    • PDFDoc.SignaturesVerificationStatus
    • PDFDocInfo
    • PDFDocViewPrefs
    • PDFDocViewPrefs.PageLayout
    • PDFDocViewPrefs.PageMode
    • PDFDocViewPrefs.ViewerPref
    • PDFDraw
    • PDFNetInternalTools
    • PDFNetInternalToolsLogBackend
    • PDFNetInternalToolsLogLevel
    • PDFRasterizer
    • PDFRasterizer.ColorPostProcessMode
    • PDFRasterizer.OverprintPreviewMode
    • PDFRasterizer.Type
    • PDFViewAnnotationEditPermissionDelegate
    • PDFViewCtrl
    • PDFViewCtrl.LinkInfo
    • PDFViewCtrl.PagePresentationMode
    • PDFViewCtrl.PageViewMode
    • PDFViewCtrl.PanelType
    • PDFViewCtrl.PDFViewCtrlWindowType
    • PDFViewCtrl.PDFViewFindTextAsyncDelegate
    • PDFViewCtrl.PDFViewRenderWorkerDelegate
    • PDFViewCtrl.Selection
    • PDFViewCtrl.TextSelectionMode
    • PDFViewCtrl.ToolMode
    • PDFViewCurrentPageDelegate
    • PDFViewDownloadDelegate
    • PDFViewErrorDelegate
    • PDFViewThumbAsyncDelegate
    • PDFViewWPF
    • PDFViewWPF.ActionEventArgs
    • PDFViewWPF.CurrentPageNumberChangedHandler
    • PDFViewWPF.CurrentScrollChangedHandler
    • PDFViewWPF.CurrentZoomChangedHandler
    • PDFViewWPF.FindTextFinsihedHandler
    • PDFViewWPF.LayoutChangedHandler
    • PDFViewWPF.LinkInfo
    • PDFViewWPF.OnActionEventHandler
    • PDFViewWPF.OnConversionEventHandler
    • PDFViewWPF.OnRenderFinishedEventHandler
    • PDFViewWPF.OnSetdocHandler
    • PDFViewWPF.OnThumbnailGeneratedEventHandler
    • PDFViewWPF.OverprintPreviewMode
    • PDFViewWPF.PagePresentationMode
    • PDFViewWPF.PageViewMode
    • PDFViewWPF.PDFViewWPFConversionType
    • PDFViewWPF.Selection
    • PDFViewWPF.TextSelectionMode
    • Point
    • Print
    • PrinterMode
    • PrinterMode.DuplexMode
    • PrinterMode.NUp
    • PrinterMode.NUpPageOrder
    • PrinterMode.Orientation
    • PrinterMode.OutputColor
    • PrinterMode.OutputQuality
    • PrinterMode.PaperSize
    • PrinterMode.PrintContentTypes
    • PrinterMode.ScaleType
    • PrintToPdfModule
    • PrintToPdfOptions
    • QuadPoint
    • Rect
    • RectCollection
    • Redactor
    • Redactor.Appearance
    • Redactor.Redaction
    • Reflow
    • RefreshOptions
    • Separation
    • Shading
    • Shading.Type
    • ShapedText
    • ShapedText.FailureReason
    • ShapedText.ShapingStatus
    • Stamper
    • Stamper.HorizontalAlignment
    • Stamper.SizeType
    • Stamper.TextAlignment
    • Stamper.VerticalAlignment
    • StructuredOutputModule
    • SVGConvertOptions
    • SVGParser
    • TemplateDocument
    • TemplateDocumentResult
    • TextDiffOptions
    • TextExtractor
    • TextExtractor.CharRange
    • TextExtractor.Line
    • TextExtractor.ProcessingFlags
    • TextExtractor.Style
    • TextExtractor.Word
    • TextExtractor.XMLOutputFlags
    • TextRange
    • TextSearch
    • TextSearch.ResultCode
    • TextSearch.SearchMode
    • TileInTransit
    • TimestampingConfiguration
    • TimestampingResult
    • TrustVerificationResult
    • VerificationOptions
    • VerificationOptions.CertificateTrustFlag
    • VerificationOptions.SignatureVerificationSecurityLevel
    • VerificationOptions.TimeMode
    • VerificationResult
    • VerificationResult.DigestStatus
    • VerificationResult.DocumentStatus
    • VerificationResult.ModificationPermissionsStatus
    • VerificationResult.TrustStatus
    • ViewChangeCollection
    • ViewerOptimizedOptions
    • WordToPDFOptions
  • pdftron.PDF.Annots
    • Caret
    • CheckBoxWidget
    • Circle
    • ComboBoxWidget
    • FileAttachment
    • FileAttachment.Icon
    • FreeText
    • FreeText.IntentName
    • Highlight
    • Ink
    • Line
    • Line.CapPos
    • Line.EndingStyle
    • Line.IntentType
    • Link
    • Link.HighlightingMode
    • ListBoxWidget
    • Markup
    • Markup.BorderEffect
    • Movie
    • Polygon
    • PolyLine
    • PolyLine.IntentType
    • Popup
    • PushButtonWidget
    • RadioButtonGroup
    • RadioButtonWidget
    • Redaction
    • Redaction.QuadForm
    • RubberStamp
    • RubberStamp.Icon
    • Screen
    • Screen.IconCaptionRelation
    • Screen.ScaleCondition
    • Screen.ScaleType
    • SignatureWidget
    • Sound
    • Sound.Icon
    • Square
    • Squiggly
    • StrikeOut
    • Text
    • Text.Icon
    • TextMarkup
    • TextWidget
    • Underline
    • Watermark
    • Widget
    • Widget.HighlightingMode
    • Widget.IconCaptionRelation
    • Widget.ScaleCondition
    • Widget.ScaleType
  • pdftron.PDF.Details
    • AnnotManager
    • AnnotTile
    • BlendEffect
  • pdftron.PDF.OCG
    • Config
    • Context
    • Context.OCDrawMode
    • Group
    • OCMD
    • OCMD.VisibilityPolicyType
  • pdftron.PDF.PDFA
    • PDFACompliance
    • PDFACompliance.Conformance
    • PDFACompliance.ErrorCode
    • PDFAOptions
  • pdftron.PDF.Struct
    • ContentItem
    • ContentItem.Type
    • SElement
    • STree
  • pdftron.SDF
    • CreateDelegate
    • DictIterator
    • DocSnapshot
    • NameTree
    • NameTreeIterator
    • NumberTreeIterator
    • Obj
    • Obj.ObjType
    • ObjSet
    • PDFTronCustomSecurityHandler
    • ResultSnapshot
    • SDFDoc
    • SDFDoc.SaveOptions
    • SecurityDescriptor
    • SecurityHandler
    • SecurityHandler.Permission
    • SecurityManager
    • SecurityManagerSingleton
    • SignatureHandler
    • SignatureHandlerId
    • StdSecurityHandler
    • StdSecurityHandler.AlgorithmType
    • UndoManager

Class Context

Begin processing a page.

Inheritance
object
Context
Implements
IDisposable
Inherited Members
object.ToString()
object.Equals(object)
object.Equals(object, object)
object.ReferenceEquals(object, object)
object.GetHashCode()
object.GetType()
object.MemberwiseClone()
Namespace: pdftron.PDF.OCG
Assembly: PDFNet.dll
Syntax
public class Context : IDisposable
Remarks

When page processing is completed, make sure to call ElementReader.End().

Constructors

Context(Config)

Create a context object that represents an optional-content state of the document from a given configuration.

Declaration
public Context(Config config)
Parameters
Type Name Description
Config config

A configuration from which to take initial OCG states.

Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

Context(Context)

Copy constructor.

Declaration
public Context(Context context)
Parameters
Type Name Description
Context context

Another context from which to take initial OCG states.

Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

Methods

Dispose()

Releases all resources used by the Context

Declaration
public override sealed void Dispose()
Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

PDFNetException

PDFNetException the PDFNet exception

PDFNetException

PDFNetException the PDFNet exception

PDFNetException

PDFNetException the PDFNet exception

Dispose(bool)

Declaration
[HandleProcessCorruptedStateExceptions]
protected virtual void Dispose(bool A_0)
Parameters
Type Name Description
bool A_0
Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

PDFNetException

PDFNetException the PDFNet exception

PDFNetException

PDFNetException the PDFNet exception

PDFNetException

PDFNetException the PDFNet exception

~Context()

Declaration
protected ~Context()
Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

PDFNetException

PDFNetException the PDFNet exception

PDFNetException

PDFNetException the PDFNet exception

PDFNetException

PDFNetException the PDFNet exception

GetNonOCDrawing()

Gets the non oc drawing.

Declaration
public bool GetNonOCDrawing()
Returns
Type Description
bool

the non-OC status for this context. The flag indicates whether the content that is not marked as optional should be treated as visible. For more information, please see SetNonOCDrawing().

Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

GetOCMode()

Gets OC drawing mode

Declaration
public Context.OCDrawMode GetOCMode()
Returns
Type Description
Context.OCDrawMode

OC drawing mode

Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

PDFNetException

PDFNetException the PDFNet exception

PDFNetException

PDFNetException the PDFNet exception

PDFNetException

PDFNetException the PDFNet exception

GetState(Group)

Gets the state.

Declaration
public bool GetState(Group group)
Parameters
Type Name Description
Group group

The optional-content group (OCG) that is queried.

Returns
Type Description
bool

the ON-OFF states (true or false) for the given optional-content group (OCG) in this OC context.

Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

ResetStates(bool)

Sets the sates of all OCGs in the context to ON or OFF.

Declaration
public void ResetStates(bool all_on)
Parameters
Type Name Description
bool all_on

A flag used to specify whether the OCG states should be set to ON (if true), or OFF (if false).

Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

SetNonOCDrawing(bool)

Sets the non-OC status for this context. Content that is not marked as optional content is drawn (or element.IsOCVisible()) when 'draw_non_OC' is true, and not drawn/visible otherwise.

Declaration
public void SetNonOCDrawing(bool draw_non_OC)
Parameters
Type Name Description
bool draw_non_OC

draw_non_OC A flag specifying whether the content that is not marked as optional should be treated as visible.

Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

SetOCDrawMode(OCDrawMode)

Sets the drawing and enumeration type for this context. This type, together with the visibility determined by the OCG and OCMD states, controls whether content that is marked as optional content is drawn or enumerated.

Declaration
public void SetOCDrawMode(Context.OCDrawMode oc_draw_mode)
Parameters
Type Name Description
Context.OCDrawMode oc_draw_mode

A flag specifying the visibility of optional content.

Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

SetState(Group, bool)

Sets the ON-OFF states for the given optional-content group (OCG) in this context.

Declaration
public void SetState(Group group, bool state)
Parameters
Type Name Description
Group group

The optional-content group (OCG) that is queried.

bool state

true for 'ON' and false for 'OFF'.

Exceptions
Type Condition
PDFNetException

PDFNetException the PDFNet exception

Implements

IDisposable
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