Omega Speaker Systems 8 Channel Thermocouple USB Data Acquisition Module TC-08 - Manual (Page 24)

TC-08 User's Guide 20
3.3.2.3 usb_tc08_open_unit_progress
short usb_tc08_open_unit_progress
(
short * handle,
short * progress
)
Call this function after usb_tc08_open_unit_async . Repeatedly call it to determine
the state of the background enumeration process. For an example of usage, see
usb_tc08_open_unit_async .
Arguments handle (Out) A handle (positive short) to the unit if the enumeration
is completed. Handle will always be 0 if the enumeration is
incomplete.
progress (Out) (Optional - can pass NULL) returns a number from 0 to
100 representing the percentage completion of the
enumeration of one unit.
Returns -1
USBTC08_PROGRESS_FAIL An error occurred, call
usb_tc08_get_last_error with a
handle of 0 to obtain the error code.
0
USBTC08_PROGRESS_PENDING Enumeration has not completed
(keep calling
usb_tc08_open_unit_progress).
1
USBTC08_PROGRESS_COMPLETE Enumeration has completed and the
handle is now valid.