使截面线成为投影机框架标题中的最高线

Question

当我将后面的方括号留空\title以从所有后续帧中删除标题时，它仍会插入空白标题行和各节的树枝。我想要

1. 标题和标题行消失，
2. 部分在标题中显示为最高级别，没有分支，
3. 小节出现在节之下，并带有分支。

以下是我当前设置的 MWE：

\title[]
{My Slide Title}

\author[My Name]{My Name\\
My Dept\\
My College\\
My University\\
My Advisor}

% No navigation buttons
\setbeamertemplate{navigation symbols}{}

% Theme
\usetheme{Montpellier}

% Number slides with no totals
\setbeamertemplate{footline}{\quad\hfill\insertframenumber\strut\quad}

\documentclass[pdf]{beamer}

\mode<presentation>{}
\begin{document}

%% Title frame 
\begin{frame}[plain]
  \titlepage
\end{frame}

%% Frame: From here on out, I want no title or title line in the header, and for section 
%% to instead appear as the highest line in the header
\section{Presentation Outline}
\begin{frame}
\frametitle{Presentation Outline}
\begin{enumerate}
  \item Motivations
  \item Background
  \item A Framework for Domain Estimation  
  \item Patterns in Postfire Tree Cover 
  \item Methods for Model-assisted Estimation  
\end{enumerate}
\end{frame}

\end{document}

Answer 1

您可以headline像这样重新定义主题模板的（代码改编自中的原始代码beamerouterthemetree.sty）：

\documentclass[pdf]{beamer}

\title{My Slide Title}

\author[My Name]{My Name\\
My Dept\\
My College\\
My University\\
My Advisor}

% No navigation buttons
\setbeamertemplate{navigation symbols}{}

% Theme
\usetheme{Montpellier}

% Number slides with no totals
\setbeamertemplate{footline}{\quad\hfill\insertframenumber\strut\quad}

\makeatletter
\setbeamertemplate{headline}{%
    \begin{beamercolorbox}[wd=\paperwidth,colsep=1.5pt]{upper separation line head}
    \end{beamercolorbox}
    \begin{beamercolorbox}[wd=\paperwidth,ht=2.5ex,dp=1.125ex,%
      leftskip=.3cm,rightskip=.3cm plus1fil]{title in head/foot}
      \usebeamerfont{title in head/foot}\insertsectionhead
    \end{beamercolorbox}
    \begin{beamercolorbox}[wd=\paperwidth,ht=2.5ex,dp=1.125ex,%
      leftskip=.3cm,rightskip=.3cm plus1fil]{section in head/foot}
      \usebeamerfont{section in head/foot}%
      \ifbeamer@tree@showhooks
        \setbox\beamer@tempbox=\hbox{\insertsubsectionhead}%
        \ifdim\wd\beamer@tempbox>1pt%
          \hskip2pt\raise1.9pt\hbox{\vrule width0.4pt height1.875ex\vrule width 5pt height0.4pt}%
          \hskip1pt%
        \fi%
      \else%  
        \hskip6pt%
      \fi%
      \insertsubsectionhead
    \end{beamercolorbox}
    \begin{beamercolorbox}[wd=\paperwidth,colsep=1.5pt]{lower separation line head}
    \end{beamercolorbox}
}
\makeatother

\mode<presentation>{}
\begin{document}

%% Title frame 
\begin{frame}[plain]
  \titlepage
\end{frame}

%% Frame: From here on out, I want no title or title line in the header, and for section 
%% to instead appear as the highest line in the header
\section{Presentation Outline}
\begin{frame}
\frametitle{Presentation Outline}
\begin{enumerate}
  \item Motivations
  \item Background
  \item A Framework for Domain Estimation  
  \item Patterns in Postfire Tree Cover 
  \item Methods for Model-assisted Estimation  
\end{enumerate}
\end{frame}

\subsection{Example Subsection}
\begin{frame}
\frametitle{Another frame}

\end{frame}

\end{document}

那么您就不需要使用来阻止打印标题了。顺便说一句，[]我建议您将第一个放在代码中。\documentclass