Defining command containing pagebreak, and boxes

Question

I am trying to make a new function, to make my life simpler. The code is supposed to make a pagebreak and ouput a colored box at the next page. Aswell as puting something in the TOC The code works, but not while inside of a command. Does anyone know how to do this?

The ultimate setup would be a command like this

\DEL{1}

producing

\newpage
\phantomsection
\addcontentsline{toc}{section}{{\color{red}\Large{Del 1}}}
\fcolorbox{black}{LightSteelBlue}{\parbox[t][1.25cm][c]{\textwidth}
{\begin{center}\textbf{Del 1 \\Uten hjelpemiddler}\end{center}}}  }

and

\Del{2}

Producing

\newpage
\phantomsection
\addcontentsline{toc}{section}{{\color{red}\Large{Del 2}}}
\fcolorbox{black}{LightSteelBlue}{\parbox[t][1.25cm][c]{\textwidth}
{\begin{center}\textbf{Del 1 \\Uten hjelpemiddler}\end{center}}}  }

I tried to make a new command like

\newcommand{\Del}{ 
\newpage
\phantomsection
\addcontentsline{toc}{section}{{\color{red}\Large{Del 2}}}
\fcolorbox{black}{LightSteelBlue}{\parbox[t][1.25cm][c]{\textwidth}
{\begin{center}\textbf{Del 1 \\Uten hjelpemiddler}\end{center}}}  }
}

Alas this gives me some strange error, that I have not yet begun my document.

Now, I think it is all of the commands such as newpage latex does not want inside of a command. Looking forward to see your clever ideas, to solve this problem =)

---

---

Now, thanks to the effort below. I was able to discover what I was looking for an almost solve it.

Now this function is ment to be used on tests and exams as a header. "Uten hjelpemidler" means without any assistance/tools. Just pen and paper.

While "Med hjelpemiddler" is with all tools avaible, computer calculator etc. Now the function below is supposed to count each time I use such a header and count up. The input argument is for saying wheter the section is with or without calculator.

The problem is that the counter "tittel" gives an error when placed inside of the function. Anyone know how to fix this ? =)

\documentclass[border=5pt,tightpage]{standalone}
\usepackage{xcolor}
\usepackage{hyperref}
\usepackage{xstring}

\newcounter{tittel}
\renewcommand{\thetittel}{\arabic{tittel}}
\newcommand{\tittel}{\stepcounter{tittel} \thetittel }
\setcounter{tittel}{0}

\newcommand{\Del}[1]{%
  \IfStrEqCase{#1}{%
    {u}{\def\Label{Uten }}%
    {m}{\def\Label{Med }}%
    }[\def\Label{UNKNOWN}]%
 % \newpage
  \phantomsection
  \addcontentsline{toc}{section}{%
    \protect\textcolor{red}{\protect\Large{Del \tittel }}}
  \noindent\fcolorbox{black}{LightSteelBlue}{%
    \parbox[t][1.25cm][c]{\dimexpr\textwidth-2\fboxsep-2\fboxrule}{
      \centering\bfseries Del \tittel \\ \Label hjelpemider}%
  }%
}

\begin{document}

Del{u}

Del{m}

Del{u}

\end{document}    

Removing the \ infront of tittel, makes the command run. So adding a counter inside the command makes it fail =(

Answer 1

Since a complete MWE with the appropriate packages, was not provided, I made some adjustments to get this to compile, but this is probably what you are looking for:

The [1] in the \newcommand specifies how many paramters the Del macro is to expect. Then to access this parameter in the command you use #1. Similarily if there were two parameters, you would use [2] and they would be accessed as #1 and #2, etc.. You can have up to 9 parameters for a \newcommand.

The % should be added at the end of each line to ensure that extra spaces do not get inserted. Try removing them to see what happens without them. I leanerd this the hard way as per Tex Capacity Exceeded (if remove % after use of macro), so I would recommend that you should get into the habit of including the %.

\documentclass[border=5pt,tightpage]{standalone}
\usepackage{xcolor}
\usepackage{hyperref}

\newcommand{\Del}[1]{%
  \newpage%
  \phantomsection%
  \addcontentsline{toc}{section}{{\color{red}\Large{Del #1}}}%
  \fcolorbox{black}{blue!10}{\parbox[t][1.25cm][c]{\textwidth}%
  {\begin{center}\textbf{Del #1 \\Uten hjelpemiddler}\end{center}}}%
}

\begin{document}
\Del{1}

\Del{2}
\end{document}

---

If I understand your comment you want the title to be different depending on if {1} or {2} is used. If so you can use the xstring package to handle the various cases. Here I do what you expect for the two cases and print UNKNOWN if a character other than {1} or {2} is provided:

\documentclass[border=5pt,tightpage]{standalone}
\usepackage{xcolor}
\usepackage{hyperref}
\usepackage{xstring}

\newcommand{\Del}[1]{%
  \IfStrEqCase{#1}{%
    {1}{\def\Label{Uten hjelpemiddler}}%
    {2}{\def\Label{Med hjelpemidler}}%
    }[\def\Label{UNKNOWN}]%
  \newpage%
  \phantomsection%
  \addcontentsline{toc}{section}{{\color{red}\Large{Del #1}}}%
  \fcolorbox{black}{blue!10}{\parbox[t][1.25cm][c]{\textwidth}%
  {\begin{center}\textbf{Del #1 \\\Label}\end{center}}}%
}

\begin{document}
\Del{1}
\Del{2}
\Del{3}
\end{document}

Answer 2

\newcommand{\DEL}[2]{%
  \newpage
  \phantomsection
  \addcontentsline{toc}{section}{%
    \protect\textcolor{red}{\protect\Large{Del #1}}}
  \noindent\fcolorbox{black}{LightSteelBlue}{%
    \parbox[t][1.25cm][c]{\dimexpr\textwidth-2\fboxsep-2\fboxrule}{
      \centering\bfseries Del #1 \\ #2}%
  }%
}

Call as

\DEL{1}{Uten hjelpemiddler}

Note that not only some % characters were missing, but the \parbox was too large and also shifted right by the indentation.

It's better to use \centering than the center environment inside the \parbox; other pairs of braces can be eliminated as well by declarations such as \bfseries, that are confined in a box.