BARCODE1D

typedef struct _tagBarCode1D 
{ 
   L_UINT uStructSize; 
   L_BOOL bOutShowText; 
   L_INT nDirection; 
   L_BOOL bErrorCheck; 
   L_INT nGranularity; 
   L_INT nMinLength; 
   L_INT nMaxLength; 
   L_INT nWhiteLines; 
   L_UINT uStd1DFlags; 
   L_UINT uAdvancedFlags; 
   L_INT nXModule; 
} BARCODE1D,* pBARCODE1D; 

This structure contains linear (1D) barcode information for reading or writing 1D barcodes.

Comments

This structure is used with L_BarCodeRead and L_BarCodeWrite functions only for linear barcodes.

pBARCODE1D is a pointer to an BARCODE1D structure. Where the function parameter type is pBARCODE1D, you can declare a BARCODE1D variable, update the structure's fields, and pass the variable's address in the parameter. Declaring a pBARCODE1D variable is necessary only if your program requires a pointer.

The Linear barcodes are not supported in UNICODE.

A barcode is composed of start mark, data, and end mark. Reading barcodes from left to right (passing BARCODE_DIR_LEFT_TO_RIGHT value to the nDirection member) or from right to left (passing BARCODE_DIR_RIGHT_TO_LEFT value to the nDirection member) will produce the same result in most cases, because the barcode reader engine recognizes the start and end marks, and handles the data accordingly.

For example, if BARCODE_DIR_LEFT_TO_RIGHT is passed and the user reads barcodes from left to right (the barcode is not rotated), the engine will recognize the start mark first, then the data, and finally the end mark.

But if the user reads barcodes from right to left (the barcode is rotated 180 degrees), the engine will first recognize the end mark, then read the (reverse-order) data, and then recognize the start mark. In this case, the engine will flip the data to normal (start/data/end) order.

Some  GS1 Databar (formerly RSS14) Expanded Stacked strings have a fixed number of symbols. L_BarCodeWrite returns ERROR_BARCODE_STRING if the number of rows does not fit.

For a table containing information for writing linear 1D barcodes, refer to: https://www.leadtools.com/sdk/barcode/1d-chart.

NOTE: Type RSS14 has been renamed GS1 Databar. All references to RSS14 now refer to GS1 Databar.