BARCODEWRITEDM - Barcode C++ Class Library Help

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 symbols.

Members

uStructSize

Size of the BARCODEWRITEDM structure, in bytes, for versioning. Use the sizeof() operator to calculate the value.

ulFlags

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

Value Meaning
BARCODE_JUSTIFY_RIGHT [0x1000] Justify the Data Matrix symbol to the right side of the bitmap.
BARCODE_JUSTIFY_H_CENTER [0x2000] Justify the Data Matrix symbol in the horizontal center of the bitmap.
BARCODE_JUSTIFY_BOTTOM [0x4000] Justify the Data Matrix symbol to the bottom side of the bitmap.
BARCODE_JUSTIFY_V_CENTER [0x8000] Justify the Data Matrix symbol in the vertical center of the bitmap.

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 you can put the barcodes back in the correct order after they have been split up..

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

File ID high byte. 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. Where 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 LBarCode::Write functions.

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:

Data Matrix type Maximum Numeric Length Maximum Alphanumeric Length Maximum Binary Length Maximum Correctable Error / Erasure
10 x 10 6 3 1 2
12 x 12 10 6 3 3
14 x 14 16 10 6 5/7
16 x 16 24 16 10 6/9
18 x 18 36 25 16 7/11
20 x 20 44 31 20 9/15
22 x 22 60 43 28 10/17
24 x 24 72 52 34 12/21
26 x 26 88 64 42 14/25
32 x 32 124 91 60 18/33
36 x 36 172 127 84 21/39
40 x 40 228 169 112 24/45
44 x 44 288 214 142 28/53
48 x 48 348 259 172 34/65
52 x 52 408 304 202 42/78
64 x 64 560 418 278 56/106
72 x 72 736 550 366 72/132
80 x 80 912 682 454 96/180
88 x 88 1152 862 574 112/212
96 x 96 1392 1042 694 136/260
104 x 104 1632 1222 814 168/318
120 x 120 2100 1573 1048 204/390
132 x 132 2608 1954 1302 248/472
144 x 144 3116 2335 1556 310/590
8 x 18 10 6 3 3
8 x 32 20 13 8 5
12 x 26 32 22 14 7/11
12 x 36 44 31 20 9/15
16 x 36 64 46 30 12/21
16 x 48 98 72 47 14/25
Help Version 20.0.2018.6.21
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