Sensoray 811 Windows SDK - Manual (Page 19)

0 on success, negative value if error (see mid811types.h for error codes list).
MID811_API int S811_DisplayChange(
);
Informs the video renderer that a WM_DISPLAYCHANGE message has been received by the
application. This callback should be called when the application has a WM_DISPLAYCHANGE event.
Parameters
none
Returns
0 on success, negative value if error (see mid811types.h for error codes list).
MID811_API int S811_SetPreviewWindow(
HWND hwnd,
int devid,
);
Sets the window for video streaming. Overrides S811_SetRenderVideo setting to TRUE.
Parameters
hwnd
Handle to video display window.
devid
current device id.
Returns
0 on success, negative value if error (see mid811types.h for error codes list).
MID811_API int S811_SetVideoPosition(
int xpos,
int ypos,
int xsize,
int ysize,
int left_clip,
int top_clip,
int right_clip,
19