BARCODEWRITEPDF

typedef struct tagBarCodeWritePDF 
{ 
   L_UINT uStructSize; 
   L_UINT16 wEccPerc; 
   L_UINT16 wEccLevel; 
   L_UINT16 wAspectHeight; 
   L_UINT16 wAspectWidth; 
   L_UINT16 wModAspectRatio; 
   L_UINT16 wColumns; 
   L_UINT16 wRows; 
   L_UINT16 wModule; 
   L_INT nJustify; 
} BARCODEWRITEPDF,* pBARCODEWRITEPDF; 

This structure contains PDF417/MicroPDF417 symbol information.

Comments

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

A PDF417 barcode size is dependent on the following values:

Number of Columns

Number of Rows

X Module Size

Module Aspect Ratio

To calculate barcode Width use the following equation:

Width= ((Number of Columns * 17) + 73) * (X Module Size)

This includes the Quiet Zone, Indicators, Start and Stop patterns.

To calculate barcode Height use the following equation:

Height=(Number of Rows + 4) * (X Module Size) * (Module Aspect Ratio)

The 4 added to Number of Rows is to account for the Quiet Zone.

If the number of columns and rows are not specified the default behavior is to find the minimum number of columns that the data requires to fit in its rows.

The Quiet Zone for a barcode is a minimum required white space before the start of the barcode symbols. The purpose is to delineate non-barcode information from the barcode data to prevent a reader from picking up information that doesnt pertain to the barcode. For a PDF417 the Quiet Zone is 2 Modules on each side.

AspectHeight and AspectWidth properties are needed in special case when the number of barcode codewords equal to 4 (i.e. small barcodes).

If there isnt a valid row column combination available to fit the encoded data or if the number of the specified columns and rows cannot fit the data. The function will return "Function Not Successful".

For a table containing information useful when writing PDF417 barcode data see https://www.leadtools.com/sdk/barcode/pdf417-chart

MicroPDF417 may only be printed in certain defined combinations of rows and columns. Possible values are (wColumns x wRows):

• 0 x 0 (Default)

• 1 x 11

• 1 x 14

• 1 x 17

• 1 x 20

• 1 x 24

• 1 x 28

• 2 x 8

• 2 x 11

• 2 x 14

• 2 x 17

• 2 x 20

• 2 x 23

• 2 x 26

• 3 x 6

• 3 x 8

• 3 x 10

• 3 x 12

• 3 x 15

• 3 x 20

• 3 x 26

• 3 x 32

• 3 x 38

• 3 x 44

• 4 x 4

• 4 x 6

• 4 x 8

• 4 x 10

• 4 x 12

• 4 x 15

• 4 x 20

• 4 x 26

• 4 x 32

• 4 x 38

• 4 x 44

For a table containing information useful when writing PDF barcode data, refer to

https://www.leadtools.com/sdk/barcode/pdf417-chart.