我想要的是投影仪上的定理，而不是斜体

Question

我想要定理标签和 beamer 定理中的内容而不是斜体。

目前它显示像

我想要“这是一个定理”而不是斜体。

\documentclass{beamer}

\makeatletter
\setbeamertemplate{theorem begin}{%
  {%
    {\bfseries\upshape\inserttheoremname%
    \ifx\inserttheoremaddition\@empty\else\ \inserttheoremaddition \fi}%
    \space\normalfont%
  }%
}
\setbeamertemplate{theorem end}{}
\makeatother

\begin{document}
\begin{frame}{Theorem}
\begin{theorem}[hello]
This is a theorem
\end{theorem}
\end{frame}

\end{document}

Answer 1

你可以移动\normalfont到组外，这样它也会影响定理的主体：

\documentclass{beamer}

\makeatletter
\setbeamertemplate{theorem begin}{%
  {%
    {\bfseries\upshape\inserttheoremname%
    \ifx\inserttheoremaddition\@empty\else\ \inserttheoremaddition \fi}%
  }%
  \space\normalfont%
}
\setbeamertemplate{theorem end}{}
\makeatother

\begin{document}
\begin{frame}{Theorem}
\begin{theorem}[hello]
This is a theorem
\end{theorem}
\end{frame}

\end{document}

Answer 2

你只需要

\setbeamertemplate{theorems}[normal font]

\documentclass{beamer}
\setbeamertemplate{theorems}[normal font]
\begin{document}
\begin{frame}{Theorem}
\begin{theorem}[hello]
This is a theorem
\end{theorem}
\end{frame}
\end{document}