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@dynarithmic dynarithmic released this 06 Sep 00:21
· 37 commits to master since this release
v5.5.0
0751d81
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Version 5.5.0

  • Add support for Big TIFF files when calling DTWAIN_AcquireFile() and DTWAIN_AcquireFileEx().
    For more information, see the new file type constants (DTWAIN_BIGTIFFNONE, DTWAIN_BIGTIFFLZW, etc.)
    Big TIFF files are TIFF files that are allowed to be greater than 4 Gigabytes in size.

  • Update twaininfo.txt to add the new Big TIFF file type information.

  • Update the DTWDEMO.exe demo program, as well as the C# and Visual Basic full
    demo programs to display the TWAIN Source's custom data when displaying the Source Properties dialog box.

  • Optimize DTWAIN_AcquireFile() and DTWAIN_AcquireFileEx() when an unsupported file type is
    specified.

  • Optimize DTWAIN_IsTwainAvailable() when determining whether TWAIN is installed. The
    optimization is for the case where DTWAIN_IsTwainAvailable() is called before
    DTWAIN_SysInitialize().

  • Add function DTWAIN_IsTwainAvailableEx() to return a pipe-delimited string denoting
    the full TWAIN paths of both TWAIN 1.x and TWAIN 2.x Data Source managers.

  • Optimize DTWAIN_OpenSource() in these scenarios:
    a) if called more than once on a TWAIN Source
    b) When initially opening a TWAIN Source by not checking for the status of the feeder
    c) Capability processing has been minimized when calling DTWAIN_OpenSource().

  • Optimize DTWAIN_GetCapValues() and DTWAIN_SetCapValues() if a capability is not supported
    by the TWAIN Source.

  • Fixed an issue with DTWAIN_GetCapValuesEx2(), where the passed-in TWAIN data type was not
    being processed correctly for all scenarios.

  • Fixed issue with DTWAIN_TN_UIOPENING not being sent during DTWAIN notification processing.

  • Fixed issue with DTWAIN_EnumCameras() not returning all of the camera information (only top
    and bottom cameras were returned). Please note that "camera" in this context does not mean
    "digital camera", but instead the mechanism that scans the image. Only TWAIN devices that
    support an internal file system (DTWAIN_IsFileSystemSupported()) will have the ability to
    enumerate camera types.

  • Fixed minor issue with DTWAIN_EnumCameras() and logging, where unsupported TWAIN drivers that
    do not have an internal file system would log an exception instead of returning an error.

  • Added DTWAIN_EnumCamerasEx() that allows the application to enumerate any of the (currently)
    9 specific camera types defined by TWAIN. The camera types are described by the TWAIN
    constants:

    DTWAIN_FT_CAMERA         
DTWAIN_FT_CAMERATOP      
DTWAIN_FT_CAMERABOTTOM   
DTWAIN_FT_CAMERAPREVIEW  
DTWAIN_FT_DOMAIN         
DTWAIN_FT_HOST           
DTWAIN_FT_DIRECTORY      
DTWAIN_FT_IMAGE          
DTWAIN_FT_UNKNOWN

  • Ensure that DTWAIN_GetCapValues() and other internal functions that call DTWAIN_GetCapValues()
    clears the returned user array of values if the TWAIN capability being tested is not supported
    by the device.

  • Adjust twaininfo.txt to properly reflect the new TWAIN 2.x capability information.
    Note: This new version of twaininfo.txt must be used with the current DTWAIN 5.5.x.
    The older version of twaininfo.txt can only be used with DTWAIN version 5.4.x or below.

  • Updated the various language bindings (C#, Delphi, Visual Basic, etc.) to reflect the new
    additions of the Big TIFF file type.

  • Updated the C/C++ "No import library" method of using DTWAIN to reflect the new functions,
    plus added missing DTWAIN API functions to dtwainx2.h and dtwimpl.cpp(.c).

  • Added the function DTWAIN_TestGetCap() that allows testing of a TWAIN Source's capability's
    MSG_GET functionality for all containers and data types. This function basically calls
    DTWAIN_GetCapValues(), checking for successful retrieval of information from the TWAIN
    device for each container type and data type supported by TWAIN. The DTWAIN_TestGetCap()
    function can be useful to determine a custom capability's container and data type if this
    information is not known by the programmer.

    The return value for DTWAIN_TestGetCap() is a DTWAIN_ARRAY, where the array consists of LONG (32-bit) values.
    The upper 16 bits of each value in the array denotes the successful data type, and the lower 16 bits
    denote the successful data type. The container type can be DTWAIN_CONTONEVALUE, DTWAIN_CONTRANGE,
    DTWAIN_CONTENUMERATION, and DTWAIN_CONTRANGE, while the data type will be one of the types defined
    in twain.h, i.e. TWTY_BOOL, TWTY_FRAME, TWTY_UINT16, etc.

    Note: Use DTWAIN_TestGetCap() with caution, as DTWAIN will attempt to test every container type and
    data type combination for the passed-in capability value.

  • Other minor bug fixes and enhancements.

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