使用 tcolorbox 绘制一个框

Question

我正在尝试绘制如下内容：

但随着我的关注（请注意，我已经厌倦了tcolorbox）

代码 ：

\documentclass{article}


\usepackage{amsmath,amsfonts,amssymb}
\usepackage[svgnames]{xcolor}
\usepackage[most]{tcolorbox}

\usepackage[margin=1.5cm]{geometry}

\tcbset{
    lemmastyle/.style={enhanced, colback=white, colframe=black, arc=0pt, 
                       fonttitle=\bfseries, description color=Maroon,  
                       colbacktitle=white, coltitle=black,    
                       top=\tcboxedtitleheight,
                       boxed title style={arc=0pt},
                       attach boxed title to top left={yshift=-\tcboxedtitleheight/1, 
                                                                                                                                                                                                                                                                                                                                }%
                      },
}

\newtcbtheorem{myLemma1}{Question :}{lemmastyle}{thm}


\usepackage{pifont}
\usepackage{fancybox}

\begin{document}
\begin{tcolorbox}[width=\textwidth, enhanced,  valign=center, colback=white, colframe=black, sharp corners, shadow={0pt}{0pt}{0mm}{black},boxrule=0.5pt]
\textbf{Question 1~: Area of the region bounded by the curves $y=x^2+2, y=-x, x=0$ and $x=1$ is}
\[  \dfrac{7}{10} \]
\end{tcolorbox}
\begin{tcolorbox}[width=\textwidth, enhanced,  valign=center, colback=white, colframe=black, sharp corners, shadow={0pt}{0pt}{0mm}{black},boxrule=0.5pt]
\textbf{Question 2~:}
\end{tcolorbox}


\begin{myLemma1}{}{}
\textbf{ Area of the region bounded by the curves $y=x^2+2, y=-x, x=0$ and $x=1$ is \[ \dfrac{7}{10}\] }
\end{myLemma1}

\end{document}

我懂了

输出：

• 有人可以告诉我如何设置tcolorbox环境来获得我想要的盒子吗？

Answer 1

您可以做类似的事（但请注意不要在开始处添加 \par，因为这将消除 hangindent 的效果）：

\documentclass{article}


\usepackage{amsmath,amsfonts,amssymb}
\usepackage[svgnames]{xcolor}
\usepackage[most]{tcolorbox}
\usepackage{lipsum}
\usepackage[margin=1.5cm]{geometry}

\tcbset{
    lemmastyle/.style={enhanced, colback=white, colframe=black, arc=0pt,
                       fonttitle=\bfseries, description color=Maroon,
                       colbacktitle=white, coltitle=black,
                       top=\tcboxedtitleheight,
                       boxed title style={arc=0pt},
                       before title=\strut,
                       attach boxed title to top left={yshift=-\tcboxedtitleheight/1},
                       before upper={\vspace{\dimexpr-\tcboxedtitleheight+\dp\strutbox-0.8pt}\par\hangindent\tcboxedtitlewidth\hangafter-2},                       
                      },
}

\newtcbtheorem{myLemma1}{Question :}{lemmastyle}{thm}

\begin{document}

\begin{myLemma1}{}{}
\lipsum*[1]
\end{myLemma1}

\end{document}

Answer 2

警告：前方有可怕的黑客攻击 ;-)

很难对齐运行的文本和附加的标题框——也许tcolorbox手册中有一些选项，但我没有找到。

由于附加的标题框本身是一个tcolorbox，因此对此的大多数（所有？）设置都可以按照与外部框相同的方式完成。

然而，我使用了单独的\newtcolorbox——它不再是了tcbtheorem，以提供更多的灵活性（使用的xparse工具tcolorbox将进一步改善这一点）

\documentclass{article}


\usepackage{amsmath,amsfonts,amssymb}
\usepackage[svgnames]{xcolor}
\usepackage[most]{tcolorbox}


\usepackage[margin=1.5cm]{geometry}

\newtcolorbox[auto counter]{myinternallemma}[2][]{%
  enhanced,
  title={\phantom{Some}},
  detach title,
  attach title to upper={\hskip0.2\textwidth},
  description color=Maroon,  
  top=-5pt,
  colbacktitle=white, coltitle=black,    
  boxed title style={%
    enhanced,arc=0pt,
    bottomtitle=1pt,
    boxrule=1pt,
    coltitle=black,
    lowerbox=ignored,
    size=normal,
    sharp corners,
    width={0.1\textwidth},
    fonttitle={\bfseries},
    title={Question \thetcbcounter},
    attach title to upper={},
    box align=bottom,
  },%
  attach boxed title to top left={%
    yshift=-\tcboxedtitleheight,
  },
  #1
}

\usepackage{blindtext}
\usepackage{pifont}
\usepackage{fancybox}

\begin{document}

\begin{myinternallemma}{}
  \textbf{ Area of the region bounded by the curves $y=x^2+2, y=-x, x=0$ and $x=1$ is \[ \dfrac{7}{10}\]} \blindtext
\end{myinternallemma}

\end{document}