\tikzset 带有多个参数

Question

我正在尝试使用带有多个参数的 tikzset。我尝试按照说明操作这里，但它不起作用（错误是

错误：\pgfkeys@temp 定义中的参数编号非法

）这是我的乳胶代码

\documentclass[tikz]{standalone}
%\tikzset{newbox/.style={draw, rectangle, inner sep = 1.5em, fill=white,
%    label={[align=left,shift={(-12ex,3.5ex)}]south east:#1,north
%      west:{\color{red} #2}}} n args={2}}
\tikzset{oldbox/.style={draw, rectangle, inner sep = 1.5em, fill=white,
    label={[align=left,shift={(-12ex,3.5ex)}]south east:{\color{blue}#1}}}}
\begin{document}
\begin{tikzpicture}
\node [oldbox={$\alpha$}] at (-1,-1) (working) {};
%\node [newbox={a}{b}] at (0,0) (fails) {};
\end{tikzpicture}
\end{document}

这将编译，但当我取消注释时，它会中断。我想newbox接受 2 个参数。请注意，我对 tikz 并不特别熟练 - 似乎有多种方法可以做每件事，所以我学到了一些零零碎碎的东西，但从来没有时间认真尝试理解整个手册。

Answer 1

这是更精确的定义。

\documentclass[tikz]{standalone}
\tikzset{newbox/.style n args=2{draw, rectangle, inner sep = 1.5em, fill=white,
    label={[align=left,anchor=south east]south west:#1},
    label={[align=left,anchor=north east,text=blue]north west:#2}},
    %
    oldbox/.style={draw, rectangle, inner sep = 1.5em, fill=white,
    label={[align=left,anchor=south east,text=blue]south west:#1}}
    }
\begin{document}
\begin{tikzpicture}
\node [oldbox={$\alpha$}] at (-2,-2) (working) {};
\node [newbox={a}{b}] at (0,0) (fails) {};
\end{tikzpicture}
\end{document}

Answer 2

你追求的是style 2 args，​​而不仅仅只是style。

\documentclass[tikz,border=3mm]{standalone}
\tikzset{newbox/.style 2 args={
              draw, rectangle, inner sep = 1.5em, fill=white,
              label={[blue,align=left,shift={(-12ex,5.5ex)}]south east:#1},
              label={[red]north west:{#2}}
               },
    oldbox/.style={draw, rectangle, inner sep = 1.5em, fill=white,
    label={[align=left,shift={(-12ex,3.5ex)}]south east:{\color{blue}#1}}}}
\begin{document}
\begin{tikzpicture}
\node [oldbox={$\alpha$}] at (-1,-1) (working) {};
\node [newbox={a}{b}] at (0,0) (fails) {};
\end{tikzpicture}
\end{document}