Backward Compatibility


How to port an application, which was using FREngine of an older version, to the newest version of FREngine.


Different versions of ABBYY FineReader Engine are not binary compatible. Applications that were compiled using the older version of ABBYY FineReader Engine should be recompiled using the headers and the library of the newer version.

Some changes of the source code may be necessary because of the ABBYY FineReader Engine API improvements. The full list of changes can be found in Help → Specifications →API Backward Compatibility.

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