''' <summary>
''' Returns word of PDF page.
''' </summary>
''' <param name="page">PDF page.</param>
''' <param name="imageViewer">Image viewer.</param>
''' <param name="location">Point on image viewer.</param>
''' <returns>Word of PDF page.</returns>
Public Shared Function GetWordPage(page As Vintasoft.Imaging.Pdf.Tree.PdfPage, imageViewer As Vintasoft.Imaging.UI.ImageViewer, location As System.Drawing.Point) As String
    ' convert the point from the control coordinates to the image coordinates
    Dim imageCoordinateSystemPoint As System.Drawing.Point = imageViewer.PointToImage(location)

    Dim pdfPageCoordinateSystemPoint As System.Drawing.PointF = imageCoordinateSystemPoint
    ' get resolution of the image
    Dim resolution As Vintasoft.Imaging.Resolution = imageViewer.Image.Resolution
    ' convert point from the image coordinate space to the page coordinate space
    page.PointToUnit(pdfPageCoordinateSystemPoint, resolution)

    ' get word of the page
    Dim textRegion As Vintasoft.Imaging.Text.TextRegion = page.TextRegion.GetWordSubregion(pdfPageCoordinateSystemPoint)

    Dim textContent As String = String.Empty
    ' if word is searched
    If textRegion IsNot Nothing Then
        textContent = textRegion.TextContent
    End If

    Return textContent
End Function

/// <summary>
/// Returns word of PDF page.
/// </summary>
/// <param name="page">PDF page.</param>
/// <param name="imageViewer">Image viewer.</param>
/// <param name="location">Point on image viewer.</param>
/// <returns>Word of PDF page.</returns>
public static string GetWordPage(
    Vintasoft.Imaging.Pdf.Tree.PdfPage page, 
    Vintasoft.Imaging.UI.ImageViewer imageViewer, 
    System.Drawing.Point location)
{
    // convert the point from the control coordinates to the image coordinates
    System.Drawing.Point imageCoordinateSystemPoint = imageViewer.PointToImage(location);

    System.Drawing.PointF pdfPageCoordinateSystemPoint = imageCoordinateSystemPoint;
    // get resolution of the image
    Vintasoft.Imaging.Resolution resolution = imageViewer.Image.Resolution;
    // convert point from the image coordinate space to the page coordinate space
    page.PointToUnit(ref pdfPageCoordinateSystemPoint, resolution);

    // get word of the page
    Vintasoft.Imaging.Text.TextRegion textRegion = 
        page.TextRegion.GetWordSubregion(pdfPageCoordinateSystemPoint);

    string textContent = string.Empty;
    // if word is searched
    if (textRegion != null)
        textContent = textRegion.TextContent;

    return textContent;
}