[sane-devel] Are options consistent across all backends?

[Mark Pemburn]

Hi All,

    The marvels of the SANE standard are starting to become clearer to 
me and I'm making good progress in getting and setting the various 
device options in my OS X interface project.  However, since I have only 
the one Canon N670U scanner to play with (at the moment, anyhow -- I'm 
borrowing a Fujitsu fi5110c from a client), I have no way to compare how 
options are treated from one device to another.  Should I be able to 
assume that say, the "resolution" option will _always_ have a constraint 
type of SANE_CONSTRAINT_RANGE with a "min", "max" and a "quant" showing 
the steps between or that "mode" will consistently provide a string list 
of supported modes?  If not, are there any guidelines that would help 
the interface programmer work around such things?

Thanks,

Mark