BARCODEWRITEDM

typedef struct _tagBARCODEWRITEDM 
{ 
   L_UINT uStructSize; 
   L_UINT32 ulFlags; 
   L_CHAR cGroupNumber; 
   L_CHAR cGroupTotal; 
   L_UCHAR cFileIDLo; 
   L_UCHAR cFileIDHi; 
   L_INT nXModule; 
} BARCODEWRITEDM,* pBARCODEWRITEDM; 

The BARCODEWRITEDM structure contains information used to write ECC 200 Data Matrix.

Members

uStructSize

Size of BARCODEWRITEDM structure in bytes. Use the sizeof operator to calculate this value.

ulFlags

Flags that indicate how to configure the engine. You can combine values when appropriate, by using a bitwise OR (|). Possible values are:

cGroupNumber

Specifies a group of Data Matrix symbols. The maximum number of symbols in a group is 16. Use this member to specify the order of each barcode in a group so that when you read each barcode's data, you can put the large piece of data back together in the correct order.

cGroupTotal

Specifies the total number of Data Matrix symbols in the group specified by the cGroupNumber member. The maximum number of symbols in a group is 16.

cFileIDLo

Specifies the low byte of the file ID number. The number must range from 1 to 254. Use this as an ID for the group since an image can have multiple groups.

cFileIDHi

Specifies the high byte of the file ID number. The number must range from 1 to 254. Use this as an ID for the group since an image can have multiple groups.

nXModule

The size of the written Data Matrix barcode, specified in 0.001 inch. If the value is too small, a minimum of 5 pixels will be used.

Comments

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

This structure is used by the L_BarCodeWrite function.

Use the cGroupNumber, CGroupTotal, CFileIDLo, cFileIDHi members whenever it is necessary to split up the information that needs to be encoded into different barcodes.

The following table contains information for writing ECC 200 Data Matrix barcodes: