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 BARCODE(3)                          GNU                          BARCODE(3)
 GNU barcode                                                     GNU barcode

                                October 1999



 NAME
      barcode - a library to create and print bar codes

 SYNOPSIS
      #include <barcode.h>

      struct Barcode_Item *Barcode_Create(char *text);
      int Barcode_Delete(struct Barcode_Item *bc);
      int Barcode_Encode(struct Barcode_Item *bc, int flags);
      int Barcode_Print(struct Barcode_Item *bc, FILE *f, int flags
      int Barcode_Position(struct Barcode_Item *bc, int wid, int hei
      int Barcode_Encode_and_Print(char *text, FILE *f, int wid
      int Barcode_Version(char *versionname);

 DESCRIPTION
      The barcode family of library functions is meant to ease creation of
      bar-code printouts.  The information below is extracted from the
      texinfo file, which is the preferred source of information.

      The functions included in the barcode library are declared in the
      header file barcode.h.  They perform the following tasks:

      struct Barcode_Item *Barcode_Create(char *text);
           The function creates a new barcode object to deal with a
           specified text string.  It returns NULL in case of failure and a
           pointer to a barcode data structure in case of success.

      int Barcode_Delete(struct Barcode_Item *bc);
           Destroy a barcode object. Always returns 0 (success)

      int Barcode_Encode(struct Barcode_Item *bc, int flags);
           Encode the text included in the bc object. Valid flags are the
           encoding type (other flags are ignored) and BARCODE_NO_CHECKSUM
           (other flags are silently ignored); if the flag argument is zero,
           bc->flags will apply. The function returns 0 on success and -1 in
           case of error. After successful termination the data structure
           will host the description of the bar code and its textual
           representation, after a failure the error field will include the
           reason of the failure.

      int Barcode_Print(struct Barcode_Item *bc, FILE *f, int flags);
           Print the bar code described by bc to the specified file.  Valid
           flags are the output type, BARCODE_NO_ASCII and
           BARCODE_OUT_NOHEADERS, other flags are ignored. If any of these
           flags is zero, it will be inherited from bc->flags which
           therefore takes precedence. The function returns 0 on success and
           -1 in case of error (with bc->error set accordingly). In case of
           success, the bar code is printed to the specified file, which
           won't be closed after use.



                                    - 1 -           Formatted:  July 1, 2022






 BARCODE(3)                          GNU                          BARCODE(3)
 GNU barcode                                                     GNU barcode

                                October 1999



 int yoff, double scalef);
      int Barcode_Position(struct Barcode_Item *bc, int wid, int hei, int xoff,
           The function is a shortcut to assign values to the data
           structure.

 xoff, int yoff, int flags);
      int Barcode_Encode_and_Print(char *text, FILE *f, int wid, int hei, int
           The function deals with the whole life of the barcode object by
           calling the other functions; it uses all the specified flags.

      int Barcode_Version(char *versionname);
           Returns the current version as an integer number of the form
           major * 10000 + minor * 100 + release. Therefore, version 1.03.5
           will be returned as 10305 and version 0.53 as 5300.  If the
           argument is non-null, it will be used to return the version
           number as a string. Note that the same information is available
           from two preprocessor macros: BARCODE_VERSION (the string) and
           BARCODE_VERSION_INT (the integer number).


































                                    - 2 -           Formatted:  July 1, 2022