[sane-devel] scanner buttons

[Rene Rebe]

Hi,

On: Fri, 9 Jul 2004 09:45:03 -0400 (EDT),
    "m. allan noah" <anoah@pfeiffer.edu> wrote:

> > In my last mail I already wrote that the HP 74xx have buttons to
> > change the scan mode and copy count - this are also use cases where=

> > the "option changed" callbacks come handy.
> > =

> =

> can you think of a case where a call-back is required? (i want to avo=
id =

> them, if possible.)

Gerhard introduced the idea in his last mail. I do not thing they are
neccessary, but for buttons that could change the mode option - and so
many other related options they can make life easier. But of course
you can set some option auto-poll - and when the button press is
detected return a RELOAD to reload all the changes options ...

Sincerely yours,
  Ren=E9 Rebe
    - ROCK Linux stable release maintainer

--  =

Ren=E9 Rebe - Europe/Germany/Berlin
  rene@rocklinux.org rene@rocklinux-consulting.de
http://www.rocklinux.org http://www.rocklinux-consulting.de