GdPicture.NET Reference Guide
BarcodeQRReaderGetBarcodeSkewAngle Method (GdPictureImaging)
Example 





GdPicture14 Namespace > GdPictureImaging Class : BarcodeQRReaderGetBarcodeSkewAngle Method
Barcode index. Must be between 1 and BarcodeQRReaderGetBarcodeCount returned value.
Returns the angle of a barcode detected by the BarcodeQRReaderDoScan method.
Syntax
'Declaration
 
Public Function BarcodeQRReaderGetBarcodeSkewAngle( _
   ByVal BarcodeNo As Integer _
) As Double
public double BarcodeQRReaderGetBarcodeSkewAngle( 
   int BarcodeNo
)
public function BarcodeQRReaderGetBarcodeSkewAngle( 
    BarcodeNo: Integer
): Double; 
public function BarcodeQRReaderGetBarcodeSkewAngle( 
   BarcodeNo : int
) : double;
public: double BarcodeQRReaderGetBarcodeSkewAngle( 
   int BarcodeNo
) 
public:
double BarcodeQRReaderGetBarcodeSkewAngle( 
   int BarcodeNo
) 

Parameters

BarcodeNo
Barcode index. Must be between 1 and BarcodeQRReaderGetBarcodeCount returned value.

Return Value

The barcode angle in degrees. The angle is measured clockwise relative to the horizontal axis of the image.
Remarks

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

Example
Detecting all QR barcodes in an image.
Dim oGdPictureImaging As New GdPicture.GdPictureImaging
Dim ImageID As Integer = oGdPictureImaging.CreateGdPictureImageFromFile("") 'Prompt the user to select an image
If imageId <> 0 Then
   If oGdPictureImaging.BarcodeQRReaderDoScan(ImageID) = GdPictureStatus.OK Then
      'Start QR barcode scanning process
      Dim BarcodeCount As Integer = oGdPictureImaging.BarcodeQRReaderGetBarcodeCount
      If BarcodeCount > 0 Then
         For i As Integer = 1 To BarcodeCount
            MessageBox.show("Barcode No: " & Str(i))
            MessageBox.show("Value: " & oGdPictureImaging.BarcodeQRReaderGetBarcodeValue(i))
            MessageBox.show("Angle: " & oGdPictureImaging.BarcodeQRReaderGetBarcodeSkewAngle(i).ToString())
         Next
      Else
         MessageBox.show("No barcode detected !")
      End If
      oGdPictureImaging.BarcodeQRReaderClear() 'Release detection info from memory
   End If
   oGdPictureImaging.ReleaseGdPictureImage(ImageID)
End If
See Also

Reference

GdPictureImaging Class
GdPictureImaging Members