Reports start and completion of the auto recognize job. The address of this callback is passed as an argument to the L_OcrAutoRecognizeManager_SetRunJobCallback function.
L_INT pEXT_CALLBACK YourFunction(data, userData)
Pointer to a L_OcrAutoRecognizeRunJobCallbackData structure that contains information about the running job start and completion states.
A void pointer that you can use to access a variable or structure containing data that your callback function needs. This gives you a way to receive data indirectly from the function that uses this callback function. (This is the same pointer that you pass in the userData parameter of the L_OcrAutoRecognizeManager_SetRunJobCallback function.)
Keep in mind that this is a void pointer, which must be cast to the appropriate data type within your callback function.
|SUCCESS||The function was successful.|
|< 1||An error occurred. Refer to Return Codes.|
This function called periodically by the OCR engine.
To activate the progress callback function, call the L_OcrAutoRecognizeManager_SetRunJobCallback function.
For an example, refer to L_OcrAutoRecognizeManager_RunJobAsync or L_OcrAutoRecognizeManager_SetJobOperationCallback
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms