References ▼
typedef struct tagBarCodeReadPDF{L_UINT uStructSize;L_INT nDirection;} BARCODEREADPDF, * pBARCODEREADPDF;
This structure contains information for reading PDF symbols.
| Member | Description | |
| uStructSize | Size of the BARCODEREADPDF structure, in bytes, for versioning. Use the sizeof() macro to calculate the value. | |
| nDirection | Flag that indicates the orientation and direction for reading barcodes. You can combine values when appropriate, by using a bitwise OR ( | ). Possible values are: | |
| Value | Meaning | |
| BARCODE_DIR_LEFT_TO_RIGHT | [0x001] To read from left to right across the bitmap. | |
| BARCODE_DIR_RIGHT_TO_LEFT | [0x002] To read from right to left across the bitmap. | |
| BARCODE_DIR_TOP_TO_BOTTOM | [0x004] To read from top to bottom across the bitmap. | |
| BARCODE_DIR_BOTTOM_TO_TOP | [0x008] To read from bottom to top across the bitmap. | |
| BARCODE_DIR_SKEW | [0x010] To read in a skewed or diagonal direction. | |
| BARCODE_DIR_HORIZONTAL | [0x020] To read horizontally (left to right and right to left). | |
| BARCODE_DIR_VERTICAL | [0x040] To read vertically (top to bottom and bottom to top). | |
| BARCODE_DIR_DIAGONAL | [0x080] To read in a diagonal or skewed direction. | |
pBARCODEREADPDF is a pointer to an BARCODEREADPDF structure. Where the function parameter type is pBARCODEREADPDF, you can declare a BARCODEREADPDF variable, update the structure's fields, and pass the variable's address in the parameter. Declaring a pBARCODEREADPDF variable is necessary only if your program requires a pointer.