Reference Guide
GdPicture14 Namespace / GdPictureImaging Class / PatchCodeReaderGetCodeY4 Method
Patch Code index. Must be between 1 and PatchCodeReaderGetCodeCount returned value.
Example





In This Topic
    PatchCodeReaderGetCodeY4 Method (GdPictureImaging)
    In This Topic
    Returns the Y position (in pixels) of the bottom-left corner of a Patch Code detected by the PatchCodeReaderDoScan method.
    Syntax
    'Declaration
     
    
    Public Function PatchCodeReaderGetCodeY4( _
       ByVal PatchCodeNo As Integer _
    ) As Integer
    public int PatchCodeReaderGetCodeY4( 
       int PatchCodeNo
    )
    public function PatchCodeReaderGetCodeY4( 
        PatchCodeNo: Integer
    ): Integer; 
    public function PatchCodeReaderGetCodeY4( 
       PatchCodeNo : int
    ) : int;
    public: int PatchCodeReaderGetCodeY4( 
       int PatchCodeNo
    ) 
    public:
    int PatchCodeReaderGetCodeY4( 
       int PatchCodeNo
    ) 

    Parameters

    PatchCodeNo
    Patch Code index. Must be between 1 and PatchCodeReaderGetCodeCount returned value.

    Return Value

    The Patch Code Y position of the bottom-left corner.
    Remarks

    This method is used in the "Barcode Recognition" Demo.

    Example
    Finding patchcodes in an image and writing complete barcodes info into a file.
    using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
    {
        int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg", false);
     
        // Start the patchcodes scanning process and write complete infos into a text file.
        gdpictureImaging.PatchCodeReaderDoScan(imageID);
     
        using (System.IO.StreamWriter file = new System.IO.StreamWriter("pathcodes.txt"))
        {
            int pathcodesFound = gdpictureImaging.PatchCodeReaderGetCodeCount();
     
            for (int i = 1; i <= pathcodesFound; i++)
            {
                // Patchcodes type, possible values are 1, 2, 4, 8, 16 or 32.
                PatchCodeType type = gdpictureImaging.PatchCodeReaderGetCodeType(i);
                file.WriteLine("Patchcode type = " + type.ToString());
     
                // The pathcode position, given by the coordinates of the corners.
                file.WriteLine("Position =  Top-Left=["
                    + gdpictureImaging.PatchCodeReaderGetCodeX1(i) + ", " + gdpictureImaging.PatchCodeReaderGetCodeY1(i)
                    + "] Top-Right=[" + gdpictureImaging.PatchCodeReaderGetCodeX2(i) + ", " + gdpictureImaging.PatchCodeReaderGetCodeY2(i)
                    + "] Bottom-Right=[" + gdpictureImaging.PatchCodeReaderGetCodeX3(i) + ", " + gdpictureImaging.PatchCodeReaderGetCodeY3(i)
                    + "] Bottom-Left=[" + gdpictureImaging.PatchCodeReaderGetCodeX3(i) + ", " + gdpictureImaging.PatchCodeReaderGetCodeY4(i) + "]");
            }
        }
     
        // Release used resources.
        gdpictureImaging.PatchCodeReaderClear();
        gdpictureImaging.ReleaseGdPictureImage(imageID);
    }
    See Also