评论的颜色会影响列表中的框架颜色

Question

我使用带有单框的 listings 包，当我在代码中放置长注释时，注释的颜色会影响框的颜色。注释行周围的框为绿色。我希望框始终为黑色。

\documentclass{article}
\usepackage{tikz}
\usepackage{listings}
\begin{document}
\lstset{language=C++,
        basicstyle=\ttfamily,
        keywordstyle=\color{blue}\ttfamily,
        commentstyle=\color{green}\ttfamily,
        frame=single, 
        breaklines=true,
}


\begin{lstlisting}
void foo()
{
  for (int i=0 ; i<VALUES_SIZE ; i++)
  {
    int x=i*2;//some very long comments about actual code in this line
    int y=i*2;//some really very very very long comments about actual code in this line spreading over two or three long lines
  }
}
\end{lstlisting}
\end{document}

Answer 1

變成rulecolor黑色。

\documentclass{article}
\usepackage{tikz}
\usepackage{listings}
\begin{document}
\lstset{language=C++,
        basicstyle=\ttfamily,
        keywordstyle=\color{blue}\ttfamily,
        commentstyle=\color{green}\ttfamily,
        frame=single,
        rulecolor=\color{black},    %%% <--- here
        breaklines=true,
}


\begin{lstlisting}
void foo()
{
  for (int i=0 ; i<VALUES_SIZE ; i++)
  {
    int x=i*2;//some very long comments about actual code in this line
    int y=i*2;//some really very very very long comments about actual code in this line spreading over two or three long lines
  }
}
\end{lstlisting}
\end{document}