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