LEADTOOLS has defined the following data types for referencing annotation objects:
| 
 Data Type  | 
 Definition and Usage  | 
| 
 HANNOBJECT  | 
 Defined as HANDLE; used as a handle to the annotation object.  | 
| 
 pHANNOBJECT  | 
 Defined as HANNOBJECT *; used as a pointer to a HANNOBJECT variable.  |