Program listings in LyX / Beamer

To use program listings in Beamer, you have to add [fragile] after \begin{frame} so that it becomes

\begin{frame}[fragile]

\begin{lstlisting}
  program codes here

\end{lstlisting}

\end{frame}

In LyX, if one wants to insert program listings, the same strategy has be to used. To do so, the following steps can be followed.

Step 1. Insert the TeX codes \begin{frame}[fragile]\frametitle{For loop}

Step 2. Type any content for the slides including inserting the program listings

Step 3. Insert the TeX codes \end{frame}