[sane-devel] sane_set_io_mode and sane_get_select_fd

m. allan noah kitno455 at gmail.com
Mon Sep 8 14:02:21 UTC 2008

i assume this is the test backend? the options control the behaviour
of the backend, so that it can act like either a backend that does, or
does not, support those functions, since they are optional. i am not
sure i understand your problem?


2008/9/8 Jeffrey Ratcliffe <jeffrey.ratcliffe at gmail.com>:
> I attach some sample code calling sane_set_io_mode and
> sane_get_select_fd, but I can't seem to get it to work. Without
> calling sane_start, I get:
> initialising sane... Success
> opening test... Success
> Setting non-blocking option... Success
> Setting non-blocking... Invalid argument
> Setting fd option... Success
> Setting fd... Invalid argument
> If I comment-in the sane_start call (as I understand should be from
> the docs), I get:
> initialising sane... Success
> opening test... Success
> start... Success
> Setting non-blocking option... Invalid argument
> Setting non-blocking... Operation not supported
> Setting fd option... Invalid argument
> Setting fd... Operation not supported
> What am I missing?
> Regards
> Jeff Ratcliffe
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