Downloads

DynaRithmic TWAIN Library version (DTWAIN) 4.3 (Demo Version)

• 32-bit ANSI and 32-bit Unicode versions of DTWAIN are included in the Demo package, giving you up to 60 days of trial usage (30 days for 32-bit DTWAIN ANSI Version, 30 days for DTWAIN Unicode usage).  After the trial period, you must purchase a license to continue usage.  Included in the retail version are 64-bit ANSI and Unicode versions of DTWAIN.

• If acquiring to files, the following file types are supported:
  
  Windows BMP
  TIFF (no compression)
  TIFF (Group 4 compression)
  JPEG
  Adobe PDF

• Job control is not available.

All other features are enabled in the trial version.

DynaRithmic TWAIN Library (DTWAIN) 3.3 (Free Version)

The Free version of DTWAIN is a stripped down version of the retail version of DTWAIN.  There is no time-limit on the free version of DTWAIN.

The DTWAIN free version has the following limitations.

• DTWAIN DLL Free Version cannot be used in a commercial, shareware, or public domain. Usage is limited to personal or in-house use.

• When the DTWAIN DLL is initially loaded, a message box appears reminding you or your users that they are using a version of DTWAIN that is for personal or in-house use only. The same message box appears once an acquisition starts.

• Acquisitions are limited to single pages (no multi-page support).

• TWAIN Data Source is closed after each acquisition.

• Native Mode acquisitions are supported. Buffered mode is not supported. File mode is supported, but only BMP files can be generated.

• Default TWAIN source capability values are supported (the application cannot set capabilities). The only settings that are changeable are resolution, contrast, and brightness.

• A source can only be selected using the TWAIN Select Source dialog.

• The Source User Interface must be used when acquiring images.

• TWAIN Message Loop Interception is not supported (must use DTWAIN Modal loop acquisitions)

• Imprinter and Duplex options are not supported.

To summarize, you can acquire only single pages, and only to BMP files if acquiring to a file. If you call a function that is not supported, or call a function with unsupported options, a message box will appear stating that the function is not supported.

For the DTWAIN_AcquireFile or DTWAIN_AcquireFileEx functions, the only type that is accepted in the Personal Edition is the DTWAIN_BMP (a Windows BMP) file type. If another type is specified, DTWAIN_AcquireFile(Ex) will return 0 and no acquisition will occur.