GetAnnotationType Method (GdPicturePDF)

In This Topic

Returns the type of a required annotation object specified by its index related to the currently selected page of the loaded PDF document. It is always "Annot" for properly defined annotation object. Please use the GdPicturePDF.GetAnnotationSubType method to find out the specific subtype of the required annotation object, as it is shown in the example below.

Syntax

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

'Declaration
 
Public Function GetAnnotationType( _
   ByVal AnnotationIdx As Integer _
) As String

public string GetAnnotationType( 
   int AnnotationIdx
)

public function GetAnnotationType( 
    AnnotationIdx: Integer
): String;

public function GetAnnotationType( 
   AnnotationIdx : int
) : String;

public: string* GetAnnotationType( 
   int AnnotationIdx
)

public:
String^ GetAnnotationType( 
   int AnnotationIdx
)

Parameters

AnnotationIdx: The 0-based index of the required annotation within the current page. It must be a value from 0 to GdPicturePDF.GetAnnotationCount-1.

Return Value

The type of the specified annotation object, if defined properly, must be "Annot". Specifically, the correct return value should be always "Annot". 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.

Please always ensure that you have selected the correct page using the GdPicturePDF.SelectPage method before applying an annotation index.

Just to remind you, that you need to use the GdPicturePDF.GetAnnotationSubType method to find out the specific subtype of the required annotation object, as it is shown in the example below.

Example

How to find out the type and the subtype of all annotations included in the PDF document.

VB.NET
C#

Dim caption As String = "Example: GetAnnotationType"
Dim gdpicturePDF As New GdPicturePDF()
Dim status As GdPictureStatus = gdpicturePDF.LoadFromFile("test.pdf", False)
If status = GdPictureStatus.OK Then
    Dim message As String = ""
    Dim pageCount As Integer = gdpicturePDF.GetPageCount()
    For i As Integer = 1 To pageCount
        status = gdpicturePDF.SelectPage(i)
        If status <> GdPictureStatus.OK Then
            message = message + "The SelectPage(" + i.ToString() + ") method has failed with the status: " + status.ToString() + vbCrLf
        Else
            message = message + "Page nr." + i.ToString() + ":" + vbCrLf
            Dim annotCount As Integer = gdpicturePDF.GetAnnotationCount()
            status = gdpicturePDF.GetStat()
            If status <> GdPictureStatus.OK Then
                message = message + "The GetAnnotationCount() method has failed with the status: " + status.ToString() + vbCrLf
            Else
                If annotCount = 0 Then
                    message = message + "This page does not contain any annotations." + vbCrLf
                Else
                    Dim annotType As String = ""
                    Dim annotSubType As String = ""
                    For j As Integer = 0 To annotCount - 1
                        annotType = gdpicturePDF.GetAnnotationType(j)
                        annotSubType = gdpicturePDF.GetAnnotationSubType(j)
                        message = message + "Annot nr." + j.ToString() + ": Type = " + annotType + "    Subtype = " + annotSubType + vbCrLf
                    Next
                End If
            End If
        End If
    Next
    MessageBox.Show(message, caption)
Else
    MessageBox.Show("The file can't be loaded.", caption)
End If
gdpicturePDF.Dispose()

string caption = "Example: GetAnnotationType";
GdPicturePDF gdpicturePDF = new GdPicturePDF();
GdPictureStatus status = gdpicturePDF.LoadFromFile("test.pdf", false);
if (status == GdPictureStatus.OK)
{
    string message = "";
    int pageCount = gdpicturePDF.GetPageCount();
    for (int i = 1; i <= pageCount; i++)
    {
        status = gdpicturePDF.SelectPage(i);
        if (status != GdPictureStatus.OK)
        {
            message = message + "The SelectPage(" + i.ToString() + ") method has failed with the status: " + status.ToString() + "\n";
        }
        else
        {
            message = message + "Page nr." + i.ToString() + ":\n";
            int annotCount = gdpicturePDF.GetAnnotationCount();
            status = gdpicturePDF.GetStat();
            if (status != GdPictureStatus.OK)
            {
                message = message + "The GetAnnotationCount() method has failed with the status: " + status.ToString() + "\n";
            }
            else
            {
                if (annotCount == 0)
                {
                    message = message + "This page does not contain any annotations." + "\n";
                }
                else
                {
                    string annotType = "";
                    string annotSubType = "";
                    for (int j = 0; j < annotCount; j++)
                    {
                        annotType = gdpicturePDF.GetAnnotationType(j);
                        annotSubType = gdpicturePDF.GetAnnotationSubType(j);
                        message = message + "Annot nr." + j.ToString() + ": Type = " + annotType + "    Subtype = " + annotSubType + "\n";
                    }
                }
            }
        }
    }
    MessageBox.Show(message, caption);
}
else
{
    MessageBox.Show("The file can't be loaded.", caption);
}
gdpicturePDF.Dispose();

Reference

GdPicturePDF Class
GdPicturePDF Members
GetAnnotationCount Method
GetAnnotationSubType Method
GetAnnotationContents Method