Read Failed at cupsBackChannelRead

Zebra kavinsivakumar at yahoo.co.in
Mon Nov 16 00:57:24 PST 2009


Hi,


    I written following code to read the printer response,

 char buff[256] = {0};
 memset(buff,0,sizeof(buff));
 fputs("\033!RIBLEN\r",stdout);

 memset(buff,0,sizeof(buff));
 fputs("\033E 2\r",stdout);
 fputs("\033V\r",stdout);

 memset(buff,0,sizeof(buff));
 ssize_t retv=cupsBackChannelRead(buff,sizeof(buff),0.0);

Finaly buff contains nothing and return value also -1.pls point out where is error.


Thanking You




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