AddLinkAnnot Method (AnnotationManager)

In This Topic

Adds a new GdPicture/XMP link annotation on the selected page of the document currently handled by this AnnotationManager object according to the parameters you have specified. A link annotation depicts the defined text, that points to a link destination, that means to a web site or to a page in the current document.

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

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

Syntax

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

'Declaration
 
Public Function AddLinkAnnot( _
   ByVal Left As Single, _
   ByVal Top As Single, _
   ByVal Width As Single, _
   ByVal Height As Single, _
   ByVal Text As String, _
   ByVal Link As String _
) As AnnotationLink

public AnnotationLink AddLinkAnnot( 
   float Left,
   float Top,
   float Width,
   float Height,
   string Text,
   string Link
)

public function AddLinkAnnot( 
    Left: Single;
    Top: Single;
    Width: Single;
    Height: Single;
    Text: String;
    Link: String
): AnnotationLink;

public function AddLinkAnnot( 
   Left : float,
   Top : float,
   Width : float,
   Height : float,
   Text : String,
   Link : String
) : AnnotationLink;

public: AnnotationLink* AddLinkAnnot( 
   float Left,
   float Top,
   float Width,
   float Height,
   string* Text,
   string* Link
)

public:
AnnotationLink^ AddLinkAnnot( 
   float Left,
   float Top,
   float Width,
   float Height,
   String^ Text,
   String^ Link
)

Parameters

Left: The horizontal (X) coordinate of the top left point, in inches, where the annotation bounding box is to be located.
Top: The vertical (Y) coordinate of the top left point, in inches, where the annotation bounding box is to be located.
Width: The width of the annotation bounding box, in inches.
Height: The height of the annotation bounding box, in inches.
Text: The text to render, means the displayed text, of the newly added link annotation.
Link: The destination of the newly added link annotation, for example http://www.gdpicture.com or page:5. It corresponds to the AnnotationLink.Link property.

Return Value

A GdPicture/XMP AnnotationLink object. The newly added GdPicture/XMP link 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 GetStat method to determine if this method has been successful.

Example

How to add a link 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 annot As GdPicture14.Annotations.AnnotationLink = annotMgr.AddLinkAnnot(1, 1, 5, 0.5F, "ORPALIS", "www.orpalis.com")
                If (annotMgr.GetStat() = GdPictureStatus.OK) AndAlso (annot IsNot Nothing) Then
                    annot.Author = "GdPicture"
                    annot.FontStyle = System.Drawing.FontStyle.Italic
                    annot.ForeColor = Color.CadetBlue
                    annot.Opacity = 0.8F
                End If
                annot.Dispose()
                annot = annotMgr.AddLinkAnnot(1, 3, 5, 0.5F, "GdPicture", "www.gdpicture.com")
                If (annotMgr.GetStat() = GdPictureStatus.OK) AndAlso (annot IsNot Nothing) Then
                    annot.Author = "GdPicture"
                    annot.ForeColor = Color.BlueViolet
                    annot.FontStyle = System.Drawing.FontStyle.Regular
                    annot.Opacity = 0.8F
                End If
                annot.Dispose()
                If annotMgr.SaveAnnotationsToPage() = GdPictureStatus.OK Then
                    annotMgr.SaveDocumentToJPEG("linkannot.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("linkannot.jpeg")
Else
    MessageBox.Show("Error!   Status: " + status.ToString(), "AnnotationManager.AddLinkAnnot")
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))
            {
                GdPicture14.Annotations.AnnotationLink annot = annotMgr.AddLinkAnnot(1, 1, 5, 0.5f, "ORPALIS", "www.orpalis.com");
                if ((annotMgr.GetStat() == GdPictureStatus.OK) && (annot != null))
                {
                    annot.Author = "GdPicture";
                    annot.FontStyle = System.Drawing.FontStyle.Italic;
                    annot.ForeColor = Color.CadetBlue;
                    annot.Opacity = 0.8f;
                }
                annot.Dispose();
                annot = annotMgr.AddLinkAnnot(1, 3, 5, 0.5f, "GdPicture", "www.gdpicture.com");
                if ((annotMgr.GetStat() == GdPictureStatus.OK) && (annot != null))
                {
                    annot.Author = "GdPicture";
                    annot.ForeColor = Color.BlueViolet;
                    annot.FontStyle = System.Drawing.FontStyle.Regular;
                    annot.Opacity = 0.8f;
                }
                annot.Dispose();
                if (annotMgr.SaveAnnotationsToPage() == GdPictureStatus.OK)
                    annotMgr.SaveDocumentToJPEG("linkannot.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("linkannot.jpeg");
else
    MessageBox.Show("Error!   Status: " + status.ToString(), "AnnotationManager.AddLinkAnnot");

Reference

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