Multiple Barcodes

Functions for drawing multiple barcodes which are necessary if a large amount of information should be encoded. More...

Functions for drawing multiple barcodes which are necessary if a large amount of information should be encoded.

Multiple Barcodes Mode

If Multiple Barcodes mode is enabled, multiple barcodes are generated automatically if the given data is too much for one barcode.
Additionally multiple barcodes are generated automatically if the provided space (bounding rectangle is too small for a single large barcode. In this case TBarCode will try to encode the data into several smaller barcodes which fit into the given area.

Supported barcodes

Normally, linear barcodes are inadequate to support large amounts of data. Multiple Barcodes mode should only be used with following 2D barcodes: Data Matrix, PDF417, PDF417 Truncated, MicroPDF or QR-Code.

Supported API functions

Some API functions are not supported when drawing multiple barcodes. Following functions should NOT be used if Multiple Barcodes mode is used:

• Barcode Data: BCCheck()
  
• Barcode Appearance: BCSetMirror(), BCSetRotation()
  
• Check-Digits: BCCalcCD(), BCGetCheckDigits()
  
• Size Queries: Size query functions are not supported for Multiple Barcode mode.
  
• Module Width and Barcode Quality: BCGetQuality()
  
• Customized Drawing (Callbacks): Customized Drawing (Callback) functions are not supported for Multiple Barcode mode.
• 2D Barcodes: Structured Append and Macro PDF417 functions (for example BCSet_DM_Append()) should not be used. When drawing multiple barcodes, Structured Append can be controlled with BCSet_MultiBC_StructApp().
  
• 2D Barcodes - PDF417:: BCGet_PDF417_CodeWords()
  
• Error handling: BCGetInvalidDataPos()