Specifies the type of ISIS callback being registered.
Values:
IG_SCANCB_BEFORE_PAGE | Specifies the callback function called before page transfer is initiated. |
IG_SCANCB_AFTER_PAGE | Specifies the callback function called when page transfer is completed. |
IG_SCANCB_AFTER_DOC | Specifies the callback function called when all document pages transfer is completed. |
IG_SCANCB_CAP_SET_5 | This value has been deprecated and will be removed from the public API in a future release. |
IG_SCANCB_AFTER_PAGE_UI | This value has been deprecated and will be removed from the public API in a future release. |