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Sending hex printer commands from a program
Message
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Divers
Thread ID:
00666878
Message ID:
00666881
Vues:
17
>Hi all,
>
>I need to send hexidecimal commands to an Epson LQ-570e dotmatrix printer in order to print a barcode on a document. Just trying to send the commands with
?? 0x1B 0x28 0x42 && command to print a barcode
gives a syntax error. Do I need to set up ASCII variables and use
TRANSFORM(variable, format)
to get VFP to send hex codes? Will just assigning a hex value to a variable
local lnPrintBarCodeCmd
>lnPrintBarCodeCmd = '0x1B 0x28 0x42'
>??  lnPrintBarCodeCmd
give me what I need?
>
>Hacking away....TIA

Try
??? CHR(0x1B) + CHR(0x28) + CHR(0x42)
Remember, that it wouldn't work if you print thru Windows driver because it will discard all none printable characters.
--sb--
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