LyX: How to get the Part name to print in headers

Question

I have a LyX article, structured with Parts -> Sections -> Subsections, and I want to print the Part name in the document header.

I am trying to get the part name with the following command, but it prints "Part"

\fancyhead[LE,RO]{\slshape \partname}

I have also read & tried this but my document doesn't compile.

How can I simply get the part name within the LaTeX Preamble?

The question your link to and its answer do provide the solution. What is the error you get when compiling? — Xavier, Apr 27 '13 at 02:52
Welcome to TeX.sx! Usually, we don't put a greeting or a “thank you” in our posts. While this might seem strange at first, it is not a sign of lack of politeness, but rather part of our trying to keep everything very concise. Accepting and upvoting answers is the preferred way here to say “thank you” to users who helped you. — jub0bs, Apr 27 '13 at 03:13
@Speravir In the first post of your suggestion there is \renewcommand{part}... but not \renewcommand{\part}.... It is a typo, isn't it? — e-birk, Apr 27 '13 at 16:01

score 4 · Accepted Answer · edited Apr 13 '17 at 12:34

In "Document settings..." under "Page Layout" change the heading style to "fancy".
It seems that you want the part title in the header and not \partname, which will usually print the word "Part" or a translation of it. Hence, considering the suggested thread and correcting a typo - {part} should be {\part} - we put
```
\let\Oldpart\part
\newcommand{\parttitle}{}
\renewcommand{\part}[1]{\Oldpart{#1}\renewcommand{\parttitle}{#1}}
```
into the LaTeX Preamble.
At the beginning of your document or from where every you want to start it as TeX code/ERT (or for global setting, in the LaTeX Preamble) we write
```
\fancyhead[LE,RO]{\slshape \parttitle}
```

1 Answers1