We recommend that you release Component Synchronizer before Engine deinitialization.
Supplementary Objects
ComponentSynchronizer Object (IComponentSynchronizer Interface)
ComponentSynchronizer object (IComponentSynchronizer interface) in ABBYY FineReader Engine Visual Components on Windows — The ComponentSynchronizer object allows you to synchronize document processing in different…
The ComponentSynchronizer object allows you to synchronize document processing in different components. This means that all operations will be performed synchronously in all connected Visual Components.
Component Synchronizer does not have a user interface. It does not use any internal features of the Visual Components, it uses only the COM API of the components. To know how the Synchronizer works in this or that situation, see How Component Synchronizer Works.
The information about synchronization is reported through special outgoing interfaces. These interfaces are IComponentSynchronizerEvents (for C++) and a dispinterface DIComponentSynchronizerEvents (for Visual Basic).
It’s worth noting that Visual Basic users should not care for details of event interfaces implementation as this development platform provides easy means for handling them. This object may be declared WithEvents in Visual Basic.
For C++ user this fact means that it supports the IConnectionPointContainer interface. To receive notification events, a C++ user should create an object derived from the IComponentSynchronizerEvents interface, then set up the connection between it and events source implemented in ComponentSynchronizer object by standard COM means.