Pointer to a PROGRESSDATA2 structure containing progress data for the current process.
A void pointer to access a variable or structure containing data that PROGRESSCALLBACK2 needs. This gives you a way to receive data indirectly from the function that uses PROGRESSCALLBACK2. (This is the same pointer that you pass in the pUserData parameter of the L_Doc2SetProgressCB 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.|
PROGRESSCALLBACK2 is called periodically by the OCR engine.
Required DLLs and Libraries