当多个宏以 `\makeatletter` 开头时，将它们存储在一个命令中

Question

我想创建beamer幻灯片，但我经常需要使用命令更改框架的边距（感谢萨姆卡特提供原始代码）

% Page wide frame
\makeatletter
    \def\Gm@lmargin{\widthTextMarginLeftPageWide}%
    \def\Gm@rmargin{\widthTextMarginRightPageWide}%
    \textwidth=\dimexpr\paperwidth-\Gm@lmargin-\Gm@rmargin\relax
    \hsize\textwidth
    \columnwidth\textwidth
    \hoffset=\dimexpr-\beamer@leftsidebar+\Gm@lmargin-\widthTextMarginLeftPageWide\relax
\makeatother

我尝试以更短的形式存储它，如下所示

\newcommand{\framePageWide}{<the code above>}

但我收到错误“@\Gm 与其定义不匹配”

\documentclass[aspectratio=169, xcolor={x11names}]{beamer}

\usecolortheme{seahorse}
\useoutertheme{split}
\useinnertheme{inmargin}

\newlength{\widthTextMarginLeftPageWide}
\setlength{\widthTextMarginLeftPageWide}{5mm}
\newlength{\widthTextMarginRightPageWide}
\setlength{\widthTextMarginRightPageWide}{5mm}

\newcommand{\framePageWide}{}

\begin{document}

{

% Page wide frame
\makeatletter
    \def\Gm@lmargin{\widthTextMarginLeftPageWide}%
    \def\Gm@rmargin{\widthTextMarginRightPageWide}%
    \textwidth=\dimexpr\paperwidth-\Gm@lmargin-\Gm@rmargin\relax
    \hsize\textwidth
    \columnwidth\textwidth
    \hoffset=\dimexpr-\beamer@leftsidebar+\Gm@lmargin-\widthTextMarginLeftPageWide\relax
\makeatother

\begin{frame}
\frametitle{Minipages in beamer}

\rule{\textwidth}{1pt}

    \begin{columns}[T,onlytextwidth]

        \column{0.45\textwidth}
        \rule{\textwidth}{1pt}

        \column{0.45\textwidth}
        \rule{\textwidth}{1pt}  

    \end{columns}

\end{frame}

}


\end{document}

Answer 1

正如我在原始评论中指出的那样，\makeatletter和\makeatother围绕着实际定义，而不是围绕着定义的内容。也就是说，

是的：

\makeatletter\newcommand\framePageWide{...}\makeatother

不：

\newcommand\framePageWide{\makeatletter...\makeatother}

数学家协会

\documentclass[aspectratio=169, xcolor={x11names}]{beamer}

\usecolortheme{seahorse}
\useoutertheme{split}
\useinnertheme{inmargin}

\newlength{\widthTextMarginLeftPageWide}
\setlength{\widthTextMarginLeftPageWide}{5mm}
\newlength{\widthTextMarginRightPageWide}
\setlength{\widthTextMarginRightPageWide}{5mm}

\makeatletter
\newcommand{\framePageWide}{%   
    \def\Gm@lmargin{\widthTextMarginLeftPageWide}%
    \def\Gm@rmargin{\widthTextMarginRightPageWide}%
    \textwidth=\dimexpr\paperwidth-\Gm@lmargin-\Gm@rmargin\relax
    \hsize\textwidth\relax
    \columnwidth\textwidth\relax
    \hoffset=\dimexpr-\beamer@leftsidebar+\Gm@lmargin-\widthTextMarginLeftPageWide\relax
}
\makeatother

\begin{document}

{\framePageWide

% Page wide frame

\begin{frame}
\frametitle{Minipages in beamer}

\rule{\textwidth}{1pt}

    \begin{columns}[T,onlytextwidth]

        \column{0.45\textwidth}
        \rule{\textwidth}{1pt}

        \column{0.45\textwidth}
        \rule{\textwidth}{1pt}  

    \end{columns}

\end{frame}

}


\end{document}

如果没有\framePageWide，就会得到