使用多个选项创建 \newtcolorbox 不起作用

Question

我想创建一个\newtcolorbox具有多个选项和自动计数器的高级功能，但无法使其工作......

MWE 是：

\documentclass[11pt,a4paper]{article}
\usepackage{lmodern}
\usepackage{tcolorbox}
\tcbuselibrary{skins}



\newtcolorbox {mybox4}[2][]
{
enhanced,
colback=white,
colframe=red!65!black,
enlarge top by=10mm,
overlay={%
\path[fill=blue!65,line width=.4mm] (frame.north west)--++(17mm,0)coordinate(n2)--++(0,8mm)--++(-20mm,0) arc (-90:90:-4mm)--cycle;
\node at ([shift={(5mm,4mm)}]frame.north west){\color{white}{
\textbf{\sffamily #1}}};
\path[fill=red!65!blue] ([xshift=.4mm]n2)--++(0,8mm)--++(7mm,0)--++(0,-8mm)--cycle;
\node at ([shift={(4mm,4mm)}]n2){\color{white}{\textbf{\sffamily \themycounter}}};
\node at ([shift={(18mm,4mm)}]n2){
\itshape\textbf{\sffamily #2}};
}}

\newcounter{mycounter}

%----------------------------------------------------------------------------------------
%TCOLORBOXES
%----------------------------------------------------------------------------------------


\begin{document}


\begin{mybox4}{sample}{Solution}
{step=mycounter,label=\themycounter}
This is a \textbf{tcolorbox}.\par
a lot of text here ... This is Example \ref{one}
\tcblower
some text
\end{mybox4}



\end{document}

提前谢谢 A

Answer 1

除非使用\NewTColorBox宏，否则语法\newtcolorbox是

\newtcolorbox[init options]{boxname}[number of args][default opt arg]{option}。

根据请求，初始化选项可以是auto counter或。use counter

这里应该使用可选参数来改变框的默认设置，通常在选项末尾用 来指定#1。

该step选项实际上不再是必要的（“引用”tcolorbox手册第 98 页）：

\documentclass[11pt,a4paper]{article}
\usepackage{lmodern}
\usepackage[skins]{tcolorbox}

\newtcolorbox[auto counter]{mybox4}[3][]{
  enhanced,
  colback=white,
  colframe=red!65!black,
  enlarge top by=10mm,
  overlay={%
    \path[fill=blue!65,line width=.4mm] (frame.north west)--++(17mm,0)coordinate(n2)--++(0,8mm)--++(-20mm,0) arc (-90:90:-4mm)--cycle;
    \node at ([shift={(5mm,4mm)}]frame.north west){\color{white}{
        \textbf{\sffamily #2}}};
    \path[fill=red!65!blue] ([xshift=.4mm]n2)--++(0,8mm)--++(7mm,0)--++(0,-8mm)--cycle;
    \node at ([shift={(4mm,4mm)}]n2){\color{white}{\textbf{\sffamily \thetcbcounter}}};
    \node at ([shift={(18mm,4mm)}]n2){
      \itshape\textbf{\sffamily #3}};
  },
  #1
}

\newcounter{mycounter}

%----------------------------------------------------------------------------------------
%TCOLORBOXES
%----------------------------------------------------------------------------------------


\begin{document}


\begin{mybox4}[label=one]{sample}{Solution}
This is a \textbf{tcolorbox}.\par
a lot of text here ... This is Example \ref{one}
\tcblower
some text
\end{mybox4}



\end{document}