Reference Guide
GdPicture14 Namespace / GdViewer Class / VerticalResolution Property
Example





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    VerticalResolution Property (GdViewer)
    In This Topic
    Gets the vertical resolution in DPI (dots per inch) of the current page of the document displayed in the GdViewer control.
    Syntax
    'Declaration
     
    
    Public ReadOnly Property VerticalResolution As Single
    public float VerticalResolution {get;}
    public read-only property VerticalResolution: Single; 
    public function get VerticalResolution : float
    public: __property float get_VerticalResolution();
    public:
    property float VerticalResolution {
       float get();
    }

    Property Value

    The current page vertical resolution, in DPI.
    Remarks
    Please note that the resulting value also depends on the currently set zoom factor.
    Example
    How to locate the clicked point.
    'We assume that the GdViewer1 control has been properly integrated.
    Sub GdViewer1_MouseClick(ByVal sender As Object, ByVal e As MouseEventArgs)
        Dim message As String = "This point is inside the document area."
        Dim ViewerLeft As Integer = e.X, ViewerTop As Integer = e.Y
        Dim DocumentLeft As Double = 0, DocumentTop As Double = 0
        GdViewer1.CoordViewerPixelToDocumentInch(ViewerLeft, ViewerTop, DocumentLeft, DocumentTop)
        If DocumentLeft < 0 OrElse DocumentTop < 0 Then
            message = "This point is outside the document area."
        Else
            Dim widthInches As Double = 0, heightInches As Double = 0
            If GdViewer1.GetDocumentType() = DocumentType.DocumentTypePDF Then
                widthInches = GdViewer1.PdfGetPageWidth() / 72
                heightInches = GdViewer1.PdfGetPageHeight() / 72
            Else
                widthInches = GdViewer1.PageWidth / GdViewer1.HorizontalResolution
                heightInches = GdViewer1.PageHeight / GdViewer1.VerticalResolution
            End If
            If DocumentLeft >= widthInches OrElse DocumentTop >= heightInches Then
                message = "This point is outside the document area."
            End If
        End If
        MessageBox.Show(message, "GdViewer.VerticalResolution")
    End Sub
    //We assume that the GdViewer1 control has been properly integrated.
    void GdViewer1_MouseClick(object sender, MouseEventArgs e)
    {
        string message = "This point is inside the document area.";
        int ViewerLeft = e.X, ViewerTop = e.Y;
        double DocumentLeft = 0, DocumentTop = 0;
        GdViewer1.CoordViewerPixelToDocumentInch(ViewerLeft, ViewerTop, ref DocumentLeft, ref DocumentTop);
        if (DocumentLeft < 0 || DocumentTop < 0)
        {
            message = "This point is outside the document area.";
        }
        else
        {
            double widthInches = 0, heightInches = 0;
            if (GdViewer1.GetDocumentType() == DocumentType.DocumentTypePDF)
            {
                widthInches = GdViewer1.PdfGetPageWidth() / 72;
                heightInches = GdViewer1.PdfGetPageHeight() / 72;
            }
            else
            {
                widthInches = GdViewer1.PageWidth / GdViewer1.HorizontalResolution;
                heightInches = GdViewer1.PageHeight / GdViewer1.VerticalResolution;
            }
            if (DocumentLeft >= widthInches || DocumentTop >= heightInches)
            {
                message = "This point is outside the document area.";
            }
        }
        MessageBox.Show(message, "GdViewer.VerticalResolution");
    }
    See Also