[sane-devel] scanner buttons

[David Stevenson]

> ok, here's a crazy idea- why not just reload the entire option array every 
> few seconds? the backend then gets to decide what order to reload them in 
> (i.e. load the 'mode' switch first, then change all the mode params, then 
> load the 'scan' button press).
> 
> is this nuts?
> 
> allan
> 
What sort of response time do we need?
I am thinking of a scan button, having pushed the button when will the 
user see some action? My feeling is less than one second is expected, 
ideally much less. Which implies to me either the polling is very low 
overhead or some sort of event triggered call back is needed.

just a thought...
David