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Technical Information

Application Development Manual | Reading bar code data from buffer

Reading bar code data from buffer


Read data from the bar code buffer.


Detailed Description

The BHT stores bar code data from its scans in the bar code buffer. The user application program must first read this data from the buffer before processing it.
The INPUT$ function reads the specified number of bytes from the bar code buffer.

Set fileno to the value specified when opening the bar code device file.

We recommend using the LOC function to check the number of bytes in the bar code buffer before reading bar code data.

Read and display bar codes
  private bardata$[100]           ' declare variable for bar code data
private barlen%                 ' declare variable for bar code length
open "bar:" as #1 code "K"
wait 0,&h03                     ' wait for bar code or key input
barlen% = loc(#1)
if barlen% > 0 then             ' check buffer for data
bardata$ = input$(barlen%, #1)' read bar code data
print bardata$
close #1

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