Description
The ReadAllQRsOnImage method searches and decodes all QR barcodes within the region of the input image specified in the parameters and returns a QRStruct HANDLE. This method works for only monochrome, 8 bit per pixel and 24 bit per pixel images. (The 8 bit per pixel and 24 bit per pixel images are converted into monochrome, using adaptive thresholding method.) Use GetQRStructElements method to receive the struct elements, and ReleaseQRStruct method to free the allocated memory. Number of detected QR barcodes can be retrieved by the method GetBarcodeNum. This function will use the Reed-Solomon algorithm to repair damaged codewords.
Syntax RetVal = [BiBrQR] ReadAllQRBarcodesOnImage hDIB
Returns RetVal LONGLONG A pointer to a QR Barcodestruct.
Remarks hDib LONGLONG Device independent bitmap.
See Also GetBarcodeNum