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Weird Printer Command Syntax Error
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Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Titre:
Weird Printer Command Syntax Error
Versions des environnements
Visual FoxPro:
VFP 9 SP1
OS:
Windows XP SP3
Network:
Windows 2003 Server
Database:
Visual FoxPro
Application:
Desktop
Divers
Thread ID:
01581421
Message ID:
01581421
Vues:
68
Hi Gang!

My fellow worker has this problem.....

They have code which creates a string of data to send to a LaserPrinter using PCl commands.
??? ESC + lcStringToPrint
lcStringtoPrint is a string of data which has in it the NDC of a drug, the Rx number and the Quantity. The values are converted to ASCII codes to send to printer, so they won't be simple strings of just numbers.

If the Quantity is 50, it prints the barcode.

When it is 60, it throws up a Syntax Error

Normally, about 98% of the time, the barcode prints just fine. But about 2 % of the time, given certain combonations of NDC, Rx and quantity, the barcdode will give a syntax error.


Here is a sample of the string in the VFP Debugger....

bad - quantiy of 60
“Š 6s M |$z \{‹”

good - quantity of 50
"Š 6s M Nsb >]‹"

Anything look amiss? Any thoughts ??


Thanks!
Tommy Tillman A+ NetWork+ MCP
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