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ERROR in twain specs

Forums › TWAIN Classic › ERROR in twain specs

  • This topic has 1 reply, 2 voices, and was last updated 14 years ago by gabe.
Viewing 2 posts - 1 through 2 (of 2 total)
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    Posts
  • January 15, 2007 at 4:04 pm #22078 Reply
    PandeleFlorin
    Participant
    • Topics - 1
    • Replies - 2
    • Total Posts - 3

    I have downloaded the latest twain specs and it has an misleading error in it,in page 3-62:


    TWAIN 1.9 Sources must support all TWAIN 1.8 required features and the following:
    Operations
    DG_CONTROL / DAT_USERINTERFACE / MSG_ENABLEDSUIONLY – this operation is
    only required for mid- and high-volume scanners. It is strongly recommended for other
    devices since it allows a way for an application to create predefined session setups for devices
    that also include settings for custom features. Note that applications that support this
    operation must also support DAT_CUSTOMDSDATA.

    DG_CONTROL / DAT_CAPABILITY / MSG_QUERYSUPPORTED


    in page 5-124 one can read:


    Requirements to be a TWAIN-Compliant Source
    Requirements
    TWAIN-compliant Sources must support the following:
    Operations
    DG_CONTROL / DAT_CAPABILITY / MSG_GET
    <...many operations listed>


    Many operations are listed there except
    DG_CONTROL / DAT_CAPABILITY / MSG_QUERYSUPPORTED
    In other words, an app developer can count on MSG_QUERYSUPPORTED
    but an driver (source) developer is not required to implement it…
    😥

    March 30, 2007 at 11:24 am #23609 Reply
    gabe
    Participant
    • Topics - 9
    • Replies - 583
    • Total Posts - 592

    ha. keep reading, there are more

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    Posts
Viewing 2 posts - 1 through 2 (of 2 total)
Reply To: ERROR in twain specs
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