眼镜功能键接口

1. 接收眼镜功能键

public static extern int xslam_start_event_stream(device_stream_callback cb);

Input:

public delegate void device_stream_callback(XvEvent xvEvent);

XvEvent 结构体

    [StructLayout(LayoutKind.Sequential)]
    public struct XvEvent
    {
        public double hostTimestamp;
        public long edgeTimestampUs;
        public int type;
        public int state;
    };

注意：B50R v2 眼镜 功能键为 13 14

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