AddPolygonAnnot Method (AnnotationManager)

In This Topic

Adds a new GdPicture/XMP polygon annotation on the selected page of the document currently handled by this AnnotationManager object according to the parameters you have specified. This annotation represents a filled and bordered polygon drawn with the specified colors.

The type of the newly added annotation object is GdPictureAnnotationType.AnnotationTypePolygon. You can change the annotation properties directly using the GdPicture14.Annotations.AnnotationPolygon class right after the successful creation of the annotation object.

Be aware that annotations are always treated relative to the currently selected page.

Adds a new GdPicture/XMP polygon annotation on the selected page of the document currently handled by this AnnotationManager object.

Syntax

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

'Declaration
 
Public Function AddPolygonAnnot( _
   ByVal BorderColor As GdPictureColor, _
   ByVal BackColor As GdPictureColor, _
   ByVal Points() As GdPicturePointF _
) As AnnotationPolygon

public AnnotationPolygon AddPolygonAnnot( 
   GdPictureColor BorderColor,
   GdPictureColor BackColor,
   GdPicturePointF[] Points
)

public function AddPolygonAnnot( 
    BorderColor: GdPictureColor;
    BackColor: GdPictureColor;
    Points: GdPicturePointFarray of
): AnnotationPolygon;

public function AddPolygonAnnot( 
   BorderColor : GdPictureColor,
   BackColor : GdPictureColor,
   Points : GdPicturePointF[]
) : AnnotationPolygon;

public: AnnotationPolygon* AddPolygonAnnot( 
   GdPictureColor BorderColor,
   GdPictureColor BackColor,
   GdPicturePointF[]* Points
)

public:
AnnotationPolygon^ AddPolygonAnnot( 
   GdPictureColor BorderColor,
   GdPictureColor BackColor,
   array<GdPicturePointF>^ Points
)

Parameters

BorderColor: A color object that defines the required border color of the newly added polygon annotation.
BackColor: A color object that defines the required background color of the newly added polygon annotation.
Points: An array of points, in inches, which determines the polygon vertices.

Return Value

A GdPicture/XMP AnnotationPolygon object. The newly added GdPicture/XMP polygon annotation.

Remarks

Please ensure that you have selected the proper page before starting any annotation related action with the handled document. Annotations are always treated relative to the currently selected page.

You can regularly apply the AnnotationManager.GetStat method to determine if this method has been successful.

Example

How to add a polygon annotation to a newly created image.

VB.NET
C#

Dim status As GdPictureStatus = GdPictureStatus.OK
Using image As GdPictureImaging = New GdPictureImaging()
    Dim imageID As Integer = image.CreateNewGdPictureImage(1000, 1600, CShort(32), Color.White)
    status = image.GetStat()
    If (status = GdPictureStatus.OK) AndAlso (imageID <> 0) Then
        Using annotMgr As AnnotationManager = New AnnotationManager()
            If (annotMgr.InitFromGdPictureImage(imageID) = GdPictureStatus.OK) AndAlso (annotMgr.SelectPage(1) = GdPictureStatus.OK) Then
                Dim px As Single = 5, py As Single = 1, dx As Single = 2, dy As Single = 2
                Dim points1 As PointF() = New PointF(4) { New PointF(px, py), New PointF(px + dx, py), New PointF(px + dx / 2, py + dy / 2),
                                                          New PointF(px + 3 * dx / 2, py + dy), New PointF(px - dx, py + dy) }
                Dim annot As GdPicture14.Annotations.AnnotationPolygon = annotMgr.AddPolygonAnnot(Color.LightBlue, Color.SteelBlue, points1)
                If (annotMgr.GetStat() = GdPictureStatus.OK) AndAlso (annot IsNot Nothing) Then
                    annot.Author = "GdPicture"
                    annot.BorderWidth = 0.2F
                    annot.Opacity = 0.8F
                End If
                annot.Dispose()
                If annotMgr.SaveAnnotationsToPage() = GdPictureStatus.OK Then
                    annotMgr.SaveDocumentToJPEG("polygon.jpeg", 75)
                End If
            End If
            status = annotMgr.GetStat()
            annotMgr.Close()
        End Using
        image.ReleaseGdPictureImage(imageID)
    End If
End Using
'We assume that the GdViewer1 control has been integrated into your application.
If status = GdPictureStatus.OK Then
    GdViewer1.DisplayFromFile("polygon.jpeg")
Else
    MessageBox.Show("Error!   Status: " + status.ToString(), "AnnotationManager.AddPolygonAnnot")
End If

GdPictureStatus status = GdPictureStatus.OK;
using (GdPictureImaging image = new GdPictureImaging())
{
    int imageID = image.CreateNewGdPictureImage(1000, 1600, 32, Color.White);
    status = image.GetStat();
    if ((status == GdPictureStatus.OK) && (imageID != 0))
    {
        using (AnnotationManager annotMgr = new AnnotationManager())
        {
            if ((annotMgr.InitFromGdPictureImage(imageID) == GdPictureStatus.OK) &&
                (annotMgr.SelectPage(1) == GdPictureStatus.OK))
            {
                float px = 5, py = 1, dx = 2, dy = 2;
                PointF[] points1 = new PointF[5] { new PointF(px, py), new PointF(px+dx, py), new PointF(px+dx/2, py+dy/2),
                                                   new PointF(px+3*dx/2, py+dy), new PointF(px-dx, py+dy) };
                GdPicture14.Annotations.AnnotationPolygon annot = annotMgr.AddPolygonAnnot(Color.LightBlue, Color.SteelBlue, points1);
                if ((annotMgr.GetStat() == GdPictureStatus.OK) && (annot != null))
                {
                    annot.Author = "GdPicture";
                    annot.BorderWidth = 0.2f;
                    annot.Opacity = 0.8f;
                }
                annot.Dispose();
                if (annotMgr.SaveAnnotationsToPage() == GdPictureStatus.OK)
                    annotMgr.SaveDocumentToJPEG("polygon.jpeg", 75);
            }
            status = annotMgr.GetStat();
            annotMgr.Close();
        }
        image.ReleaseGdPictureImage(imageID);
    }
}
//We assume that the GdViewer1 control has been integrated into your application.
if (status == GdPictureStatus.OK)
    GdViewer1.DisplayFromFile("polygon.jpeg");
else
    MessageBox.Show("Error!   Status: " + status.ToString(), "AnnotationManager.AddPolygonAnnot");

Reference

AnnotationManager Class
AnnotationManager Members
SelectPage Method
SaveAnnotationsToPage Method
GetAnnotationCount Method
GetAnnotationIdx Method
GetAnnotationType Method
DeleteAnnotation Method