\begin{frame}[fragile]
  \frametitle{evdev vs.joydev}
  \begin{columns}[c]

  \column{.50\textwidth}

  \begin{verbatim}
struct js_event {
	__u32 time;     /* event timestamp in milliseconds */
	__s16 value;    /* value */
	__u8 type;      /* event type */
	__u8 number;    /* axis/button number */
};
  \end{verbatim}

  \column{.50\textwidth}

  \begin{verbatim}
struct input_event {
	struct timeval time;
	unsigned short type;
	unsigned short code;
	unsigned int value;
};
  \end{verbatim}

  \end{columns}
\end{frame}