| Available in LEADTOOLS Imaging Pro, Vector, Document, and Medical Imaging toolkits. | 
HWIASESSION
This feature is available in LEADTOOLS version 16 or higher.
LEADTOOLS has defined the following data types for referencing a WIA session:
| Data Type | Definition and Usage | 
| HWIASESSION | Defined as L_VOID*; used as a handle for a WIA session. | 
| pHWIASESSION | Defined as HWIASESSION *; used as a pointer to a WIA session handle. |