[cups.development] POS Printer

[Michael Sweet]

In a print filter use cupsBackChannelRead().  That said, not all backends support the back-channel so you must be prepared to operate without it - use the cupsSideChannelDoRequest function to query for backchannel support:

    http://www.cups.org/documentation.php/doc-1.4/api-filter.html

On May 4, 2010, at 9:18 AM, Cris Di Scla wrote:

> Hello
> i'm trying to write a procedure that queries a ESC/POS printer to get low-paper status ... i send esc sequence to the printer but i don't know how to retrieve printer response.
> Please, can you help me in some way?
> Greetings,
> cris
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________________________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair