GdPictureImaging.BarcodeDataMatrixReaderDoScan Method (Integer, BarcodeDataMatrixReaderScanMode)

Starts a barcode recognition process on a GdPicture image or on an area of a GdPicture image defined by SetROI() function.

This function accepts a parameter to specify the scanning mode (quality vs speed).

public GdPictureStatus BarcodeDataMatrixReaderDoScan(
    int ImageID, 
    BarcodeDataMatrixReaderScanMode ScanMode
);

Visual Basic

Public Function BarcodeDataMatrixReaderDoScan(
    ByVal ImageID As Integer, 
    ByVal ScanMode As BarcodeDataMatrixReaderScanMode
) As GdPictureStatus

Parameters

Parameters	Description
ImageID	GdPicture Image Identifier.
ScanMode	A member of the BarcodeDataMatrixReaderScanMode enumeration.

Returns

A member of the GdPictureStatus enumeration.

Remarks

This function requires the optional GdPicture DataMatrix Barcode Recognition Plugin. This Plugin must be unlocked with the SetLicenseNumberDataMatrixBarcodeRecognition() function.

Example

Detecting all DataMatrix barcode of an image

Copy Code

   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
       Dim oGdPictureImaging As New GdPicture.GdPictureImaging
       Dim ImageID As Integer

       oGdPictureImaging.SetLicenseNumber("XXX") 'Unlocking GdPicture.NET -> Replace XXX by a valid license KEY
       oGdPictureImaging.SetLicenseNumberDataMatrixBarcodeRecognition("XXX") 'Unlocking the optional GdPicture DataMatrix Barcode Recognition Plugin -> Replace XXX by a valid license KEY

       ImageID = oGdPictureImaging.CreateGdPictureImageFromFile("") 'Prompt the user to select an image

       If ImageID <> 0 Then
           If oGdPictureImaging.BarcodeDataMatrixReaderDoScan(ImageID) = GdPictureStatus.OK Then 'Start DataMatrix barcode scanning process
               Dim BarcodeCount As Integer = oGdPictureImaging.BarcodeDataMatrixReaderGetBarcodeCount

               If BarcodeCount > 0 Then
                   For i As Integer = 1 To BarcodeCount
                       MsgBox("Barcode No: " & Str(i))
                       MsgBox("Value: " & oGdPictureImaging.BarcodeDataMatrixReaderGetBarcodeValue(i))
                       MsgBox("Rows: " & Str(oGdPictureImaging.BarcodeDataMatrixReaderGetBarcodeRows(i)))
                       MsgBox("Columns: " & Str(oGdPictureImaging.BarcodeDataMatrixReaderGetBarcodeColumns(i)))
                   Next
               Else
                   MsgBox("No barcode detected !")
               End If

               oGdPictureImaging.BarcodeDataMatrixReaderClear() 'Release detection info from memory
           End If
           oGdPictureImaging.ReleaseGdPictureImage(ImageID)
       End If
   End Sub