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latex 无法在 beamerposter 的标题中显示数字

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latex 无法在 beamerposter 的标题中显示数字

我正在使用 beamerposter 制作海报，但在子图和标题方面遇到了问题。问题是 latex 只显示标题文本，但不显示字母，如 ((a) caption a)

这是我正在做的事情：

\documentclass[final,hyperref={pdfpagelabels=false}]{beamer}
\mode<presentation>{\usetheme{mytheme}}

\usepackage[orientation=portrait,size=a0,scale=1.4,debug]{beamerposter}
\usepackage{changepage}
\usepackage{array,tabularx}
\usepackage{graphicx}
\usepackage{subcaption}
\usepackage{caption}


\setbeamertemplate{caption}[numbered]
\captionsetup{labelformat=simple}

\newcolumntype{Z}{>{\centering\arraybackslash}X} % centered tabularx columns

\begin{beamercolorbox}{block title}
    \begin{figure}
        \begin{tabularx}{\linewidth}{ZZ}

            \begin{subfigure}[b]{\linewidth}
                \includegraphics[width=0.95\linewidth]{result-test-22-multiples}
                \caption{asdasd}  
            \end{subfigure}  &

            \begin{subfigure}[b]{\linewidth}
                \includegraphics[width=0.95\linewidth]{result-test-22-single}
                \caption{asdasd}
            \end{subfigure}

            \end{tabularx}
        \end{figure}


\end{beamercolorbox}

以下是主题，抱歉，有点乱：

\ProvidesPackage{mytheme} 

\RequirePackage{tangocolors}
\selectcolormodel{cmyk}
\mode<presentation>

\setbeamercolor{block title}{bg=taaluminium,fg=black}

\setbeamercolor{headline}{fg=tabutter,bg=white}
\setbeamercolor{footline}{fg=tabutter, bg=blue}
\setbeamerfont{footline}{size=\LARGE,series=\bf}
\setbeamercolor{separation line}{bg=black}
\setbeamercolor{title in headline}{fg=blue}
\setbeamercolor{author in headline}{fg=blue}
\setbeamercolor{institute in headline}{fg=green}

\setbeamercolor{framesubtitle}{fg=ta3orange, bg=ta2gray}
\setbeamercolor{author in head/foot}{fg=blue, bg=white}
%\setbeamercolor{title in head/foot}{fg=blue, bg=white}

\setbeamercolor{background canvas}{bg=white}


%\setbeamercolor*{normal text}{fg=tachameleon, bg=ta3gray}
\setbeamercolor*{block body}{bg=taaluminium,fg=black}
%\setbeamercolor*{block title}{fg=taorange,bg=ta3skyblue}
\setbeamerfont{block title}{size=\large,series=\bf}
\setbeamercolor{upper separation line head}{fg=ta2orange}

%\setbeamercolor*{example body}{fg=ta3aluminium,bg=white}
%\setbeamercolor*{example text}{fg=ta3aluminium,bg=black}
%\setbeamercolor*{example title}{bg=taorange,fg=ta2gray}
\setbeamercolor{alerted text}{fg=red}

%\setbeamercolor{example text}{fg=taorange}
\setbeamercolor{structure}{fg=white}

\setbeamertemplate{itemize items}[triangle]
\setbeamertemplate{navigation symbols}{}  % no navigation on a poster
\setbeamercolor{itemize item}{fg=ta2skyblue}
\setbeamercolor{itemize subitem}{fg=black}
\setbeamertemplate{itemize subitem}[circle]


\setbeamertemplate{block begin}{
\vskip.75ex
\begin{beamercolorbox}[rounded=true,shadow=false,leftskip=1cm,colsep*=.75ex]  {block title}%
\usebeamerfont*{block title}\insertblocktitle
\end{beamercolorbox}%
{\ifbeamercolorempty[bg]{block body}{}{\nointerlineskip\vskip-0.5pt}}%
\usebeamerfont{block body}%
\begin{beamercolorbox}   [rounded=true,shadow=false,colsep*=.75ex,sep=.75ex,vmode]{block body}%
\ifbeamercolorempty[bg]{block body}{\vskip-.25ex}{\vskip-.75ex}\vbox{}%
}
\setbeamertemplate{block end}{
\end{beamercolorbox}
}


\addtobeamertemplate{block begin}{}
{
   % separates paragraphs in a block
   \setlength{\parskip}{12pt plus 1pt minus 1pt}%
   \begin{adjustwidth}{1cm}{1cm}
}

\addtobeamertemplate{block end}
{\end{adjustwidth}%
\vspace{1ex plus 0.5ex minus 0.5ex}}% Pads bottom of block





\setbeamertemplate{headline}{  
\leavevmode

\begin{beamercolorbox}[wd=\paperwidth]{headline}
\begin{columns}[T]
\begin{column}{.02\paperwidth}
\end{column}
\begin{column}{.3\paperwidth}
\begin{center}
    \includegraphics[width=.3\paperwidth]{banner}
\end{center}

\end{column}
\begin{column}{.65\paperwidth}
    \vskip3ex
    \raggedleft
    \usebeamercolor{title in headline}{\color{fg}     \textbf{\LARGE{\inserttitle}}\\[1ex]}
    \usebeamercolor{author in headline}{\color{fg}\large{\insertauthor}\\[1ex]}
    \usebeamercolor{institute in headline}{\color{fg}  \large{\insertinstitute}\\[1ex]}     
  \end{column}
  \begin{column}{.03\paperwidth}
  \end{column}
  \end{columns}
 \end{beamercolorbox}

 \begin{beamercolorbox}[wd=\paperwidth]{lower separation line head}
  \rule{0pt}{2pt}
 \end{beamercolorbox}
}

%  \setbeamertemplate{headline}{  
%    \leavevmode
%    \begin{beamercolorbox}[sep=0.5cm,wd=.8\paperwidth]{headline}
%      \usebeamercolor{title in headline}{\raggedleft\color{fg}   \textbf{\LARGE{\inserttitle}}\\[1ex]}
%      \usebeamercolor{author in headline}{\raggedleft\color{fg} \large{\insertauthor}\\[1ex]}
%      \usebeamercolor{institute in headline}{\raggedleft\color{fg} \large{\insertinstitute}\\[1ex]}     
%    \end{beamercolorbox}%
%    \begin{beamercolorbox}[wd=.2\paperwidth]{logo in headline}
%      \centering
%      \LARGE{LOGO}
%    \end{beamercolorbox}  


%}

\setbeamertemplate{footline}{
 \begin{beamercolorbox}[wd=\paperwidth]{upper separation line foot}
  \rule{0pt}{2pt}
 \end{beamercolorbox}

\leavevmode%

 \begin{beamercolorbox}[ht=2em,leftskip=1cm,rightskip=1cm]{author in  head/foot}%
  \begin{columns}[T]
  \begin{column}{.80\paperwidth} 
  \centering \Large{Institute}
   \hfill
  \vskip1ex
 \end{column}
 \begin{column}{.15\linewidth} 
   \includegraphics[scale=.8]{logo}
   \vskip1ex
 \end{column}    
 \end{columns}
 \end{beamercolorbox}
 \vskip0pt%
 \begin{beamercolorbox}[wd=\paperwidth]{lower separation line foot}
  \rule{0pt}{2pt}

  \end{beamercolorbox}
 }


% Display a grid to help align images ... and it looks nice with this color scheme
%\beamertemplategridbackground[1cm]


\mode<all>



%%% Local Variables: 
%%% mode: latex  
%%% TeX-PDF-mode: t
%%% TeX-master: "poster"
%%% End:

答案1

问题是使用的主题有

\setbeamercolor{structure}{fg=white}

在构建编号标题时，beamer使用（参见文件beamerbaseauxtemplates.sty）：

\usebeamercolor[fg]{caption name}

因此标题编号将在浅色背景上显示为白色，几乎不可见；要纠正此问题，请caption name适当设置颜色；例如（更改red为所需的颜色）：

\setbeamercolor{caption name}{fg=red}

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