Re: SANE Api question: SANE_INFO_RELOAD_OPTIONS

From: Jochen Eisinger (jochen.eisinger@gno.de)
Date: Thu Sep 07 2000 - 07:55:29 PDT

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    Hi!

    The definition of sane_get_option_descriptor says:

    "... The returned option descriptor is guaranteed to remain valid (and
    at the returned address) until the device is closed." (SANE Standard
    Version 1.01, page 26, 4.3.6 sane_get_option_descriptor)

    Since the constraint range is part of the option descriptor it may not
    change during runtime.

    -- jochen

    [mh]
    >
    > Hi,
    > when a frontend sets an option by calling sane_control_option
    > and this action results in a SANE_INFO_RELOAD_OPTIONS,
    > does this mean that *only* the value or availability of one or more
    > other options is affected?
    > Or is it also possible, that e.g. the constraint range of another
    > option is affected? (e.g. the brightness is adjustable from -100 to
    > 100 in color mode, and from -50 to 50 in gray mode)
    >
    > Can someone please explain this?
    >
    > Thanks a lot,
    > Michael
    > 

    --
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