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





In This Topic
GdPicture14 Namespace / GdPicturePDF Class / GetAnnotationColor Method

GetAnnotationColor Method (GdPicturePDF)

In This Topic
Returns the color of a required annotation object specified by its index related to the currently selected page of the loaded PDF document.

This color is used for the following purposes:

  • The background of the annotation's icon when closed.
  • The title bar of the annotation's pop-up window.
  • The border of a link annotation.
Syntax
'Declaration
 
Public Function GetAnnotationColor( _
   ByVal AnnotationIdx As Integer _
) As GdPictureColor
public GdPictureColor GetAnnotationColor( 
   int AnnotationIdx
)
public function GetAnnotationColor( 
    AnnotationIdx: Integer
): GdPictureColor; 
public function GetAnnotationColor( 
   AnnotationIdx : int
) : GdPictureColor;
public: GdPictureColor GetAnnotationColor( 
   int AnnotationIdx
) 
public:
GdPictureColor GetAnnotationColor( 
   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 color of the specified annotation object. 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.

Example
How to retrieve the color and some other properties of all stamp annotation objects within the PDF document.
Dim caption As String = "Example: GetAnnotationColor"
Dim gdpicturePDF As GdPicturePDF = 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 page nr." + i.ToString()
            Dim annotCount As Integer = gdpicturePDF.GetAnnotationCount()
            status = gdpicturePDF.GetStat()
            If status = GdPictureStatus.OK Then
                If annotCount = 0 Then
                    message = message + " does not contain any annotations."
                Else
                    Dim annotSubType As String = ""
                    Dim color As Color = Color.Black, fillColor As Color = Color.Black
                    Dim opacity As Byte = 0
                    Dim l As Single = 0, t As Single = 0, w As Single = 0, h As Single = 0
                    For j As Integer = 0 To annotCount - 1
                        annotSubType = gdpicturePDF.GetAnnotationSubType(j)
                        If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
                            If annotSubType.Equals("Stamp") Then
                                message = message + vbCrLf + "AnnotID: " + j.ToString()
                                message = message + vbCrLf + "    color: "
                                color = gdpicturePDF.GetAnnotationColor(j)
                                status = gdpicturePDF.GetStat()
                                If status = GdPictureStatus.OK Then message = message + color.ToString() Else message = message + status.ToString()
                                message = message + "    fill color: "
                                fillColor = gdpicturePDF.GetAnnotationFillColor(j)
                                status = gdpicturePDF.GetStat()
                                If status = GdPictureStatus.OK Then message = message + fillColor.ToString() Else message = message + status.ToString()
                                message = message + "    opacity: "
                                opacity = gdpicturePDF.GetAnnotationOpacity(j)
                                status = gdpicturePDF.GetStat()
                                If status = GdPictureStatus.OK Then message = message + opacity.ToString() Else message = message + status.ToString()
                                message = message + "    rectangle: "
                                status = gdpicturePDF.GetAnnotationRect(j, l, t, w, h)
                                If status = GdPictureStatus.OK Then message = message + "[" + l.ToString() + "," + t.ToString() + " ; w:" + w.ToString() + " h:" + h.ToString() + "]" Else message = message + status.ToString()
                            End If
                        Else
                            message = message + vbCrLf + "The GetAnnotationSubType() method has failed with the status: " + status.ToString()
                        End If
                    Next
                End If
            Else
                message = message + ": the GetAnnotationCount() method has failed with the status: " + status.ToString()
            End If
            message = message + vbCrLf
        Else
            message = message + "The SelectPage(" + i.ToString() + ") method has failed with the status: " + status.ToString() + vbCrLf
        End If
    Next
    MessageBox.Show(message, caption)
Else
    MessageBox.Show("The file can't be loaded.", caption)
End If
gdpicturePDF.Dispose()
string caption = "Example: GetAnnotationColor";
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 page nr." + i.ToString();
            int annotCount = gdpicturePDF.GetAnnotationCount();
            status = gdpicturePDF.GetStat();
            if (status == GdPictureStatus.OK)
            {
                if (annotCount == 0)
                {
                    message = message + " does not contain any annotations.";
                }
                else
                {
                    string annotSubType = "";
                    Color color = Color.Black, fillColor = Color.Black;
                    byte opacity = 0;
                    float l = 0, t = 0, w = 0, h = 0;
                    for (int j = 0; j < annotCount; j++)
                    {
                        annotSubType = gdpicturePDF.GetAnnotationSubType(j);
                        if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
                        {
                            if (annotSubType.Equals("Stamp"))
                            {
                                message = message + "\nAnnotID: " + j.ToString();
            
                                message = message + "\n    color: ";
                                color = gdpicturePDF.GetAnnotationColor(j);
                                status = gdpicturePDF.GetStat();
                                if (status == GdPictureStatus.OK) message = message + color;
                                else message = message + status.ToString();
            
                                message = message + "    fill color: ";
                                fillColor = gdpicturePDF.GetAnnotationFillColor(j);
                                status = gdpicturePDF.GetStat();
                                if (status == GdPictureStatus.OK) message = message + fillColor;
                                else message = message + status.ToString();
            
                                message = message + "    opacity: ";
                                opacity = gdpicturePDF.GetAnnotationOpacity(j);
                                status = gdpicturePDF.GetStat();
                                if (status == GdPictureStatus.OK) message = message + opacity.ToString();
                                else message = message + status.ToString();
            
                                message = message + "    rectangle: ";
                                status = gdpicturePDF.GetAnnotationRect(j, ref l, ref t, ref w, ref h);
                                if (status == GdPictureStatus.OK) message = message + "[" + l.ToString() + "," + t.ToString() + " ; w:" + w.ToString() + " h:" + h.ToString() + "]";
                                else message = message + status.ToString();
                            }
                        }
                        else
                        {
                            message = message + "\nThe GetAnnotationSubType() method has failed with the status: " + status.ToString();
                        }
                    }
                }
            }
            else
                message = message + ": the GetAnnotationCount() method has failed with the status: " + status.ToString();
            
            message = message + "\n";
        }
        else
            message = message + "The SelectPage(" + i.ToString() + ") method has failed with the status: " + status.ToString() + "\n";
    }
    MessageBox.Show(message, caption);
}
else
{
    MessageBox.Show("The file can't be loaded.", caption);
}
gdpicturePDF.Dispose();
See Also