Function spinInterfaceUnregisterInterfaceEventHandler 

pub unsafe extern "C" fn spinInterfaceUnregisterInterfaceEventHandler(
    hInterface: spinInterface,
    hInterfaceEventHandler: spinInterfaceEventHandler,
) -> spinError

Unregisters an interface event handler from an interface @see spinError

@param hInterface The interface from which to unregister the interface event handler @param hInterfaceEventHandler The interface event handler to unregister

@return spinError The error code; returns SPINNAKER_ERR_SUCCESS (or 0) for no error