Japanese tikz-qtree

Question

I'm having trouble using the example code from tikz-qtree to typeset a Japanese syntax tree. Here's my MWE:

\documentclass[10pt,letterpaper]{article}

\usepackage{xeCJK}
\setCJKmainfont{MS Mincho}% for \rmfamily

\usepackage{tikz}
\usepackage{tikz-qtree}
\usepackage{tikz-qtree-compat}
\tikzset{every leaf node/.style={font=\ja}}

\begin{document}
\begin{tikzpicture}
  \Tree [ .VP [ .V\1 いる ] ]
\end{tikzpicture}
\end{document}

And I get this error:

! Undefined control sequence.

\tikz@textfont ->\ja

I am using XeLaTeX in a just-updated distribution of MiKTeX on Windows 7. Anyone know how to fix this?

Answer 1

The error tells you that the command \ja (presumably for font switching to Japanese) has not been defined.

But in this case, since you're using xelatex, you wouldn't need the line

 \tikzset{every leaf node/.style={font=\ja}}

for font switching at all. Your code should compile fine if you remove that line.