Sets the unit used for specifying the OCR area.
SetOCRAreaUnit(pDevMode As Long, iValue As Long) As Boolean
Input value - handle to the BlackIceDEVMODE structure
Input value -one of the following values:
1: Pixel
2: 0.1*mm
3: 0.01*Inch
Return value - TRUE on success, FALSE otherwise.
NOTE: For 32-bit applications, use pDevMode as Integer, instead of Long.