''' <summary>
''' Creates the PDF documenet with free text annotation.
''' </summary>
''' <param name="outputPdfFilename">The output PDF filename.</param>
Public Shared Sub CreatePdfFreeTextAnnotation(outputPdfFilename As String)
    Using document As New Vintasoft.Imaging.Pdf.PdfDocument(outputPdfFilename, Vintasoft.Imaging.Pdf.PdfFormat.Pdf_14)
        Dim page As Vintasoft.Imaging.Pdf.Tree.PdfPage

        ' Add new page
        page = document.Pages.Add(Vintasoft.Imaging.PaperSizeKind.A4)
        page.Annotations = New Vintasoft.Imaging.Pdf.Tree.Annotations.PdfAnnotationList(document)
        Dim annotationRectangle As System.Drawing.RectangleF = page.MediaBox
        annotationRectangle.Inflate(-200, -300)

        ' Free text annotation (without line)
        Dim freeText As New Vintasoft.Imaging.Pdf.Tree.Annotations.PdfFreeTextAnnotation(page)
        freeText.Rectangle = annotationRectangle
        freeText.BorderWidth = 3
        freeText.Color = System.Drawing.Color.Green
        freeText.TextPadding = New Vintasoft.Imaging.PaddingF(freeText.BorderWidth)
        freeText.SetTextDefaultAppearance(document.FontManager.GetStandardFont(Vintasoft.Imaging.Pdf.Tree.Fonts.PdfStandardFontType.TimesRoman), 20, System.Drawing.Color.Red)
        freeText.Contents = "Free text annotation (without line)"
        page.Annotations.Add(freeText)
        freeText.UpdateAppearance()

        ' Add new page
        page = document.Pages.Add(Vintasoft.Imaging.PaperSizeKind.A4)
        page.Annotations = New Vintasoft.Imaging.Pdf.Tree.Annotations.PdfAnnotationList(document)

        ' Free text annotation (with line)
        freeText = New Vintasoft.Imaging.Pdf.Tree.Annotations.PdfFreeTextAnnotation(page)
        freeText.Rectangle = System.Drawing.RectangleF.Inflate(annotationRectangle, 30, 30)
        freeText.BorderWidth = 3
        freeText.Color = System.Drawing.Color.Green
        freeText.TextPadding = New Vintasoft.Imaging.PaddingF(30 + freeText.BorderWidth, 30 + annotationRectangle.Height / 2, 30 + freeText.BorderWidth, 30 + freeText.BorderWidth)
        freeText.SetTextDefaultAppearance(document.FontManager.GetStandardFont(Vintasoft.Imaging.Pdf.Tree.Fonts.PdfStandardFontType.TimesRoman), 20, System.Drawing.Color.Red)
        freeText.LineEndingStyle = Vintasoft.Imaging.Pdf.Tree.Annotations.PdfAnnotationLineEndingStyle.OpenArrow
        freeText.CalloutLinePoints = New System.Drawing.PointF() {New System.Drawing.PointF(annotationRectangle.X, annotationRectangle.Y + annotationRectangle.Height), New System.Drawing.PointF(annotationRectangle.X + annotationRectangle.Width / 2, annotationRectangle.Y + annotationRectangle.Height / 3F * 2F), New System.Drawing.PointF(annotationRectangle.X + annotationRectangle.Width / 2, annotationRectangle.Y + annotationRectangle.Height / 2)}
        freeText.Contents = "Free text annotation  (with line)"
        freeText.UpdateAppearance()
        page.Annotations.Add(freeText)

        document.SaveChanges()
    End Using
End Sub

/// <summary>
/// Creates the PDF documenet with free text annotation.
/// </summary>
/// <param name="outputPdfFilename">The output PDF filename.</param>
public static void CreatePdfFreeTextAnnotation(string outputPdfFilename)
{
    using (Vintasoft.Imaging.Pdf.PdfDocument document = new Vintasoft.Imaging.Pdf.PdfDocument(
        outputPdfFilename, Vintasoft.Imaging.Pdf.PdfFormat.Pdf_14))
    {
        Vintasoft.Imaging.Pdf.Tree.PdfPage page;

        // Add new page
        page = document.Pages.Add(Vintasoft.Imaging.PaperSizeKind.A4);
        page.Annotations = new Vintasoft.Imaging.Pdf.Tree.Annotations.PdfAnnotationList(document);
        System.Drawing.RectangleF annotationRectangle = page.MediaBox;
        annotationRectangle.Inflate(-200, -300);

        // Free text annotation (without line)
        Vintasoft.Imaging.Pdf.Tree.Annotations.PdfFreeTextAnnotation freeText = 
            new Vintasoft.Imaging.Pdf.Tree.Annotations.PdfFreeTextAnnotation(page);
        freeText.Rectangle = annotationRectangle;
        freeText.BorderWidth = 3;
        freeText.Color = System.Drawing.Color.Green;
        freeText.TextPadding = new Vintasoft.Imaging.PaddingF(freeText.BorderWidth);
        freeText.SetTextDefaultAppearance(
            document.FontManager.GetStandardFont(Vintasoft.Imaging.Pdf.Tree.Fonts.PdfStandardFontType.TimesRoman),
            20,
            System.Drawing.Color.Red);
        freeText.Contents = "Free text annotation (without line)";
        page.Annotations.Add(freeText);
        freeText.UpdateAppearance();

        // Add new page
        page = document.Pages.Add(Vintasoft.Imaging.PaperSizeKind.A4);
        page.Annotations = new Vintasoft.Imaging.Pdf.Tree.Annotations.PdfAnnotationList(document);

        // Free text annotation (with line)
        freeText = new Vintasoft.Imaging.Pdf.Tree.Annotations.PdfFreeTextAnnotation(page);
        freeText.Rectangle = System.Drawing.RectangleF.Inflate(annotationRectangle, 30, 30);
        freeText.BorderWidth = 3;
        freeText.Color = System.Drawing.Color.Green;
        freeText.TextPadding = new Vintasoft.Imaging.PaddingF(
            30 + freeText.BorderWidth,
            30 + annotationRectangle.Height / 2,
            30 + freeText.BorderWidth,
            30 + freeText.BorderWidth);
        freeText.SetTextDefaultAppearance(
            document.FontManager.GetStandardFont(Vintasoft.Imaging.Pdf.Tree.Fonts.PdfStandardFontType.TimesRoman),
            20,
            System.Drawing.Color.Red);
        freeText.LineEndingStyle = Vintasoft.Imaging.Pdf.Tree.Annotations.PdfAnnotationLineEndingStyle.OpenArrow;
        freeText.CalloutLinePoints = new System.Drawing.PointF[] { 
            new System.Drawing.PointF(
                annotationRectangle.X, 
                annotationRectangle.Y+annotationRectangle.Height),
            new System.Drawing.PointF(
                annotationRectangle.X+annotationRectangle.Width / 2, 
                annotationRectangle.Y+annotationRectangle.Height / 3f * 2f),
            new System.Drawing.PointF(
                annotationRectangle.X+annotationRectangle.Width / 2, 
                annotationRectangle.Y+annotationRectangle.Height / 2),
        };
        freeText.Contents = "Free text annotation  (with line)";
        freeText.UpdateAppearance();
        page.Annotations.Add(freeText);

        document.SaveChanges();
    }
}