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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?

Read-only properties in raw C++

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

Recognizing CMC-7

How can I recognize the MICR CMC-7 barcode font?

Temporary files

When they should be deleted? And where they are located?  

Using Attachments in FlexiCapture

What is called "Attachment" in the context of FlexiCapture? How can attachments be used? How to add an attachment to a batch/document/page?

OpenImage method does not open an image file

Why does the OpenImage method not open an image file?

How to open one page of a multi-page file?

How to open one page of a multi-page file?

Standard Return Codes

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

[FREngine 10] Read-Only Properties List

Some  get_ properties in FREngine API return readonly objects. If a modification method is called for such object the error ERR_ACCESS_TO_CONST_OBJECT_DENIED is returned. Sometimes such properties allow modification using put_ property. To modify such a propertey one needs to create an new empty object, copy all values from existing object wit...

Message “Attempted to read or write protected memory”

Why does the “System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.” error message appear?

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