OCR SDK Knowledge Base


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Backward Compatibility

My application was written using FREngine of an older version than I want to use. How to port my application to the newest version of FREngine?

Suspicious Symbols

How to work with suspicious symbols?

The number of Engine objects

How many Engine objects can exist in an application?

Read-only properties in raw C++

How can I edit read-only object properties in raw C++?

Standard Return Codes

It is a list of the standard return codes of ABBYY FineReader Engine functions and properties.

Error Handling

All ABBYY FineReader Engine interface methods and properties return a value of the HRESULT type. The HRESULT (for result handle) is a way of returning success, warning, and error values. HRESULTs are really not handles to anything; they are only 32-bit values with several fields e...

Working with simple properties

How to work with simple properties (Boolean, Long, Double)?

Saving images

How to save an image in an external format?

API, C#

Working with string properties

This article provides several code snippets for working with string properties.

Leaked objects

Why does this error message occur in the FREngine log? Are there objects leaked?

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