VintaSoft Imaging .NET SDK v9.1 for .NET
Vintasoft.Imaging.Pdf.Tree Namespace / PdfPage Class / ClearImages Method
The array of rectangles, in PDF page space (user units).
Example



In This Topic
    ClearImages Method
    In This Topic
    Clears image regions that intersect with specified rectangles on PDF page.
    Syntax
    'Declaration
     
    Public Sub ClearImages( _
       ByVal ParamArray rects() As RectangleF _
    ) 
    public void ClearImages( 
       params RectangleF[] rects
    )
    public: void ClearImages( 
       params RectangleF[]* rects
    ) 
    public:
    void ClearImages( 
       ... array<RectangleF>^ rects
    ) 

    Parameters

    rects
    The array of rectangles, in PDF page space (user units).
    Example
    Here is an example that shows how to clear the images in the specified rectangle of PDF page:
    Public Shared Sub TestCrearImagesOnAllPages(inputPdfFilename As String, outputPdfFilename As String)
    	' open document
    	Using document As New Vintasoft.Imaging.Pdf.PdfDocument(inputPdfFilename)
    		' for all pages
    		For Each page As Vintasoft.Imaging.Pdf.Tree.PdfPage In document.Pages
    			Dim rect As System.Drawing.RectangleF = page.MediaBox
    			rect.Inflate(New System.Drawing.SizeF(-rect.Width / 4, -rect.Height / 4))
    			' clear images in specified rect on PDF page
    			page.ClearImages(rect)
    		Next
    		' pack document
    		If inputPdfFilename = outputPdfFilename Then
    			document.Pack()
    		Else
    			document.Pack(outputPdfFilename)
    		End If
    	End Using
    End Sub
    public static void TestCrearImagesOnAllPages(string inputPdfFilename, string outputPdfFilename)
    {
        // open document
        using (Vintasoft.Imaging.Pdf.PdfDocument document = new Vintasoft.Imaging.Pdf.PdfDocument(inputPdfFilename))
        {
            // for all pages
            foreach (Vintasoft.Imaging.Pdf.Tree.PdfPage page in document.Pages)
            {
                System.Drawing.RectangleF rect = page.MediaBox;
                rect.Inflate(new System.Drawing.SizeF(-rect.Width / 4, -rect.Height / 4));
                // clear images in specified rect on PDF page
                page.ClearImages(rect);
            }
            // pack document
            if (inputPdfFilename == outputPdfFilename)
                document.Pack();
            else
                document.Pack(outputPdfFilename);
        }
    }
    Requirements

    Target Platforms: .NET 5 Preview 7; .NET Core 3.1; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

    See Also