GetOCGIntentView Method (GdPicturePDF)

In This Topic

Returns, if the value of the Intent setting of an optional content group, specified by its unique identifier, is View.

The Intent setting provides a way to distinguish between different intended uses of optional content. PDF 1.5 defines two names, View and Design, to indicate the intended use of the graphics in the optional content group.

Syntax

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

'Declaration
 
Public Function GetOCGIntentView( _
   ByVal OCGId As Integer _
) As Boolean

public bool GetOCGIntentView( 
   int OCGId
)

public function GetOCGIntentView( 
    OCGId: Integer
): Boolean;

public function GetOCGIntentView( 
   OCGId : int
) : boolean;

public: bool GetOCGIntentView( 
   int OCGId
)

public:
bool GetOCGIntentView( 
   int OCGId
)

Parameters

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

Return Value

true if the value of the Intent setting is View, otherwise returns false, means if the Intent setting is Design. The GdPicturePDF.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 GdPicturePDF.GetStat method to identify the specific reason for the method's failure, if any.

Example

How to find out the Intent option of the specified layer in the PDF document.

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 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
            
                onOff = gdpicturePDF.GetOCGIntentView(OcgId)
                status = gdpicturePDF.GetStat()
                If status = GdPictureStatus.OK Then
                    If onOff Then
                        output = output + "    Intent = View"
                    Else
                        output = output + "    Intent = Design"
                    End If
                Else
                    output = output + "    Intent = 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: GetOCGIntentView")
    Else
        MessageBox.Show("The GetOCGCount() method has failed with the status: " + status.ToString(), "Example: GetOCGIntentView")
    End If
Else
    MessageBox.Show("The file can't be loaded.", "Example: GetOCGIntentView")
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 = "";
        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() + ")";
            
                onOff = gdpicturePDF.GetOCGIntentView(OcgId);
                status = gdpicturePDF.GetStat();
                if (status == GdPictureStatus.OK)
                {
                    if (onOff)
                        output = output + "    Intent = View";
                    else
                        output = output + "    Intent = Design";
                }
                else
                    output = output + "    Intent = Error (" + status.ToString() + ")";
            }
            else
                output = output + "The GetOCG() method has failed with the status: " + status.ToString();
        }
        MessageBox.Show(output, "Example: GetOCGIntentView");
    }
    else
    {
        MessageBox.Show("The GetOCGCount() method has failed with the status: " + status.ToString(), "Example: GetOCGIntentView");
    }
}
else
{
    MessageBox.Show("The file can't be loaded.", "Example: GetOCGIntentView");
}
gdpicturePDF.Dispose();

Reference

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