我怎样才能在 tcolorbox 里面放置一个带标题的图形？

Question

我正在尝试在包装定义环境的 tcolorbox 中包含一个带标题的图形。

我的 MWE 是...

\documentclass{article}
\usepackage{xcolor}
\usepackage[most]{tcolorbox}
\usepackage{multido}
\newenvironment{definition}[1][]{
  \par\addvspace{\topsep}
  \begin{tcolorbox}[colback=yellow!5, arc=0pt, outer arc=0pt, boxrule=0.5pt]
    \noindent\sffamily\upshape \textbf{Definition}
    \ifx\empty#1\empty\else\ (#1)\fi. % Theorem name (optional)
    \ \ignorespaces
}
{
  \end{tcolorbox}
  \par\nobreak
}

\begin{document}
\begin{definition}
Here is my definition

\begin{figure}[htbp]
\centering
\includegraphics[width=7.5cm]{example-image-a}
\caption{Hello}
\end{figure}
\end{definition}
\end{document}

如果没有标题，图像会显示出来，但如果我添加标题，图像就会消失。我该如何解决这个问题？

Answer 1

float.sty除了选项之外H，还有另一个建议，那MWE就是：

\documentclass{article}
\usepackage{xcolor}
\usepackage[most]{tcolorbox}
\usepackage{multido}
\usepackage{float}
\newenvironment{definition}[1][]{
  \par\addvspace{\topsep}
  \begin{tcolorbox}[colback=yellow!5, arc=0pt, outer arc=0pt, boxrule=0.5pt]
    \noindent\sffamily\upshape \textbf{Definition}
    \ifx\empty#1\empty\else\ (#1)\fi. % Theorem name (optional)
    \ \ignorespaces
}
{
  \end{tcolorbox}
  \par\nobreak
}

\begin{document}
\begin{definition}
Here is my definition

\begin{figure}[H]
\centering
\includegraphics[width=7.5cm]{example-image-a}
\caption{Hello}
\end{figure}
\end{definition}
\end{document}

请注意，该选项H将图像放置在您放置的确切位置

Answer 2

\captionof来自caption包裹是你的朋友。

\documentclass{article}
% \usepackage{xcolor} % auto loaded by tcolorbox
\usepackage[most]{tcolorbox}
% \usepackage{multido}

\usepackage[strut=off]{caption}

\newenvironment{definition}[1][]{
  \par\addvspace{\topsep}
  \begin{tcolorbox}[colback=yellow!5, arc=0pt, outer arc=0pt, boxrule=0.5pt]
    \noindent\sffamily\upshape \textbf{Definition}%
    % use \ifstrempty from etoolbox, which is auto loaded by tcolorbox
    \ifstrempty{#1}{}{\ (#1)}.% Theorem name (optional)
    \ \ignorespaces
}
{
  \end{tcolorbox}
  \par\nobreak
}


\begin{document}
\listoffigures % \captionof contributes to list of figures

\begin{definition}
Here is my definition

\begin{minipage}{\linewidth}
  \centering
  \includegraphics[width=7.5cm]{example-image-a}
  \captionof{figure}{Hello}
\end{minipage}
\end{definition}
\end{document}