Theses, Books, Title pages ⇒ underline under the title increasing as per the title length

[annier]

In the format of the thesis templates, when we want to underline the thesis title, how can we write the format of the coverpage or other pages so that the length of the underline depends upon the lenth of the title?

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\noindent
Dissertation Title: \fixedunderlinecenter[12.6cm]{\@etitle}\\
...

Yours Sincerely,
Anil Kunwar

[Johannes_B]

Your question is completely unclear to me, especially since you mention a template, but are not mentioning which one. Please elaborate.

[annier]

Hi Johannes,
My question is discussing of longer thesis titles. For now, i use the manual way of dividing the title instead of using the preamble definition of title \etitle.

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Dissertation Title:\fixedunderlinecenter[12.6cm]{This is a very long title }\\
\underline{\makebox[12.6cm]{ and this phrase follows the above part.}}\\
~~\\

The title \etitle is defined in cover.tex as

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\etitle{This is a very long title  and this phrase follows the above part.}

...

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Dissertation Title:\fixedunderlinecenter[12.6cm]{\etitle }\\

If it is written like this, the title will exceed the paper size.

Please refer the following link:
https://github.com/whufanwei/DLUT_XeLaT ... format.tex
from line 355 onwards

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\parbox[t][0.58cm][c]{\textwidth}
    {\sihao\fs 学{\hfill}位{\hfill}论{\hfill}文{\hfill}题{\hfill}目{\hfill}：\fixedunderlinecenter[12.6cm]{\@ctitle}}
    \parbox[t][1.22cm][c]{\textwidth}
    {\sihao\fs 作{\hfill}者{\hfill}签{\hfill}名{\hfill}：\fixeddistanceleft[12.6cm]{\underline{\hspace{5.8cm}}\hfill
	日期：\underline{\hspace{1.4cm}}~年~{\underline{\hspace{0.7cm}}~月~{\underline{\hspace{0.7cm}}~日~}}}}
  \end{center}
  \renewcommand{\baselinestretch}{1.27}
  \cleardoublepage
}

In short what are the roles of
\hfill
and
\parbox?


Yours Sincerely,
Anil Kunwar

[Johannes_B]

This is some really creepy code. Try the following:

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\documentclass{book}
\makeatletter
\newcommand\fixedunderlinecenter[2][1cm]{\underline{\hb@xt@ #1{\hss#2\hss}}}
\makeatother
\usepackage{soul}
\begin{document}
\LARGE
\fixedunderlinecenter[4cm]{Wombat}

\fixedunderlinecenter[10cm]{This is a very long title  and this phrase follows the above part.}
\renewcommand{\fixedunderlinecenter}[2][]{\ul{#2}}

\fixedunderlinecenter{This is a very long title  and this phrase follows the above part.}
\end{document}

[annier]

Hi Johannes,
Thank you providing me an excellent illustration.

Yours Sincerely,
Anil Kunwar