Sensoray 811 Windows SDK - Manual (Page 11)

MID811_API int S811_GetStatus(
MID811STATUS *pStatus,
int devid
);
Retrieves current status information (see MID811func.h for MID811STATUS type definition).
Multibyte (ASCII) filenames.
Parameters
pStatus
pointer to status variable.
devid
device id in the system (use 0 for first channel with a single board installed).
Returns
0 on success, negative value if error (see mid811types.h for error codes list).
MID811_API int S811_GetStatusW(
MID811STATUS_W *pStatus,
int devid
);
Same as S811_GetStatus, but uses Unicode filenames.
MID811_API int S811_StartPreview(
int devid
);
Starts video and audio streaming for preview only.
Parameters
devid
device id in the system (use 0 for first channel with a single board installed).
Returns
0 on success, negative value if error (see mid811types.h for error codes list).
MID811_API int S811_StopPreview(
int devid
);
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