GetOCGLockedState Method (GdPicturePDF)

In This Topic

Returns the value of the Locked state setting of an optional content group specified by its unique identifier.

The Locked state indicates, if this group is for information only. Producers can use this state to prevent the visibility of this group from being changed by users.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration

 

Public Function GetOCGLockedState( _

   ByVal OCGId As Integer _

) As Boolean

public bool GetOCGLockedState( 

   int OCGId

)

public function GetOCGLockedState( 

    OCGId: Integer

): Boolean;

public function GetOCGLockedState( 

   OCGId : int

) : boolean;

public: bool GetOCGLockedState( 

   int OCGId

)

public:

bool GetOCGLockedState( 

   int OCGId

)

Parameters

OCGId: The unique identifier of the required OCG entry. You can obtain this identifier using the GetOCG method.

Return Value

The value of the Locked state setting. The GetStat method can be subsequently used to determine if this method has been successful.

Remarks

This method is only allowed for use with non-encrypted documents.

It is recommend to use the GetStat method to identify the specific reason for the method's failure, if any.

Example

How to find out the Locked state of the specified layer and some other layer's properties.

VB.NET
C#

Dim gdpicturePDF As New GdPicturePDF()

Dim status As GdPictureStatus = gdpicturePDF.LoadFromFile("test.pdf", False)

If status = GdPictureStatus.OK Then

    Dim output As String = ""

    Dim ocgCount As Integer = gdpicturePDF.GetOCGCount()

    status = gdpicturePDF.GetStat()

    If status = GdPictureStatus.OK Then

        output = "The number of OCG layers: " + ocgCount.ToString()

        Dim OcgId As Integer = 0

        Dim title As String = ""

        Dim state As PdfOcgState = PdfOcgState.Undefined

        Dim onOff As Boolean = False

        For i As Integer = 0 To ocgCount - 1

            output = output + vbCrLf + "Nr." + (i + 1).ToString() + ": "

            OcgId = gdpicturePDF.GetOCG(i)

            status = gdpicturePDF.GetStat()

            If status = GdPictureStatus.OK Then

                title = gdpicturePDF.GetOCGTitle(OcgId)

                status = gdpicturePDF.GetStat()

                If status = GdPictureStatus.OK Then

                    output = output + "Title = " + title.ToString()

                Else

                    output = output + "Title = Error (" + status.ToString() + ")"

                End If

            

                state = gdpicturePDF.GetOCGViewState(OcgId)

                status = gdpicturePDF.GetStat()

                If status = GdPictureStatus.OK Then

                    output = output + " ; View = " + state.ToString()

                Else

                    output = output + " ; View = Error (" + status.ToString() + ")"

                End If

            

                state = gdpicturePDF.GetOCGExportState(OcgId)

                status = gdpicturePDF.GetStat()

                If status = GdPictureStatus.OK Then

                    output = output + " ; Export = " + state.ToString()

                Else

                    output = output + " ; Export = Error (" + status.ToString() + ")"

                End If

            

                state = gdpicturePDF.GetOCGPrintState(OcgId)

                status = gdpicturePDF.GetStat()

                If status = GdPictureStatus.OK Then

                    output = output + " ; Print = " + state.ToString()

                Else

                    output = output + " ; Print = Error (" + status.ToString() + ")"

                End If

            

                onOff = gdpicturePDF.GetOCGLockedState(OcgId)

                status = gdpicturePDF.GetStat()

                If status = GdPictureStatus.OK Then

                    output = output + " ; Locked = " + onOff.ToString()

                Else

                    output = output + " ; Locked = Error (" + status.ToString() + ")"

                End If

            Else

                output = output + "The GetOCG() method has failed with the status: " + status.ToString()

            End If

        Next

        MessageBox.Show(output, "Example: GetOCGLockedState")

    Else

        MessageBox.Show("The GetOCGCount() method has failed with the status: " + status.ToString(), "Example: GetOCGLockedState")

    End If

Else

    MessageBox.Show("The file can't be loaded.", "Example: GetOCGLockedState")

End If

gdpicturePDF.Dispose()

GdPicturePDF gdpicturePDF = new GdPicturePDF();

GdPictureStatus status = gdpicturePDF.LoadFromFile("test.pdf", false);

if (status == GdPictureStatus.OK)

{

    string output = "";

    int ocgCount = gdpicturePDF.GetOCGCount();

    status = gdpicturePDF.GetStat();

    if (status == GdPictureStatus.OK)

    {

        output = "The number of OCG layers: " + ocgCount.ToString();

        int OcgId = 0;

        string title = "";

        PdfOcgState state = PdfOcgState.Undefined;

        bool onOff = false;

        for (int i = 0; i < ocgCount; i++)

        {

            output = output + "\nNr." + (i + 1).ToString() + ": ";

            OcgId = gdpicturePDF.GetOCG(i);

            status = gdpicturePDF.GetStat();

            if (status == GdPictureStatus.OK)

            {

                title = gdpicturePDF.GetOCGTitle(OcgId);

                status = gdpicturePDF.GetStat();

                if (status == GdPictureStatus.OK)

                    output = output + "Title = " + title.ToString();

                else

                    output = output + "Title = Error (" + status.ToString() + ")";

            

                state = gdpicturePDF.GetOCGViewState(OcgId);

                status = gdpicturePDF.GetStat();

                if (status == GdPictureStatus.OK)

                    output = output + " ; View = " + state.ToString();

                else

                    output = output + " ; View = Error (" + status.ToString() + ")";

            

                state = gdpicturePDF.GetOCGExportState(OcgId);

                status = gdpicturePDF.GetStat();

                if (status == GdPictureStatus.OK)

                    output = output + " ; Export = " + state.ToString();

                else

                    output = output + " ; Export = Error (" + status.ToString() + ")";

            

                state = gdpicturePDF.GetOCGPrintState(OcgId);

                status = gdpicturePDF.GetStat();

                if (status == GdPictureStatus.OK)

                    output = output + " ; Print = " + state.ToString();

                else

                    output = output + " ; Print = Error (" + status.ToString() + ")";

            

                onOff = gdpicturePDF.GetOCGLockedState(OcgId);

                status = gdpicturePDF.GetStat();

                if (status == GdPictureStatus.OK)

                    output = output + " ; Locked = " + onOff.ToString();

                else

                    output = output + " ; Locked = Error (" + status.ToString() + ")";

            }

            else

                output = output + "The GetOCG() method has failed with the status: " + status.ToString();

        }

        MessageBox.Show(output, "Example: GetOCGLockedState");

    }

    else

    {

        MessageBox.Show("The GetOCGCount() method has failed with the status: " + status.ToString(), "Example: GetOCGLockedState");

    }

}

else

{

    MessageBox.Show("The file can't be loaded.", "Example: GetOCGLockedState");

}

gdpicturePDF.Dispose();

Reference

GdPicturePDF Class
GdPicturePDF Members
GetOCGCount Method
GetOCG Method
GetOCGTitle Method
GetOCGExportState Method
GetOCGIntentView Method
GetOCGPrintState Method
GetOCGViewState Method
NewOCG Method