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Using ABBYY FineReader Engine in C (Objective-C)
This section provides the description of loading and unloading ABBYY FineReader Engine in C (Objective-C).
- Include this code when importing the FREngine.h header file:
/* C */ #define __RPC__deref_out #define COBJMACROS #include <FREngine.h> /* Objective-C */ #define interface _COM_interface #define __RPC__deref_out #define COBJMACROS #import <FREngine.h> #undef interface
- Use the following code for loading and unloading FREngine.dll:
typedef HRESULT (*initializeEngine_ptr) (BSTR, BSTR, BSTR, BSTR, BSTR, VARIANT_BOOL, IEngine **); typedef HRESULT (*DeinitializeEngine_ptr) (void); static IEngine* FREngine; static HMODULE FREngineDll; int main(int argc, char *argv[]) { initializeEngine InitializeEngine=NULL; DeinitializeEngine_ptr DeinitializeEngine=NULL; // provide your Customer Project ID here, and if applicable, the Online License information wchar_t *customerProjectId = L""; wchar_t *licensePath = L""; wchar_t *licensePassword = L""; FREngineDll = LoadLibraryEx("<path to FREngine.dll>", 0, LOAD_WITH_ALTERED_SEARCH_PATH); if(FREngineDll) { InitializeEngine = (InitializeEngine_ptr) GetProcAddress(FREngineDll,"InitializeEngine"); if(InitializeEngine) InitializeEngine(customerProjectId, licensePath, licensePassword, "", "", FALSE, &FREngine); } ProcessImage(); IEngine_Release( FREngine ); DeinitializeEngine = (DeinitializeEngine_ptr) GetProcAddress(FREngineDll,"DeinitializeEngine"); DeinitializeEngine(); }
- All other calls to ABBYY FineReader Engine can use the C macros defined in the FREngine.h header file.
void ProcessImage() { IFRDocument* frDocument = NULL; IEngine_CreateFRDocument( FREngine, &frDocument ); IFRDocument_AddImageFile( frDocument, L"<path to a source image>", NULL, NULL ); IFRDocument_Process( frDocument, NULL, NULL, NULL ); IFRDocument_Export( frDocument, L"<path to an output file>", FEF_PDF, NULL ); IFRDocument_Release( frDocument ); }
See also
24.03.2023 8:51:52