settings.tex

\documentclass{scrlttr2}
\usepackage[ngerman]{babel}
\usepackage[utf8]{inputenc} 
\usepackage[a6paper,
	top=5mm,
	bottom=5mm,
	inner=7mm,
	outer=7mm,
	foot=2mm,
	landscape]{geometry}
\usepackage{pstricks}
\usepackage{pst-barcode}

\input{qrcodes.tex}

% Schriftart
\usepackage{kpfonts}

\makeatletter
\@setplength{refvpos}{2mm}
\@setplength{firstfootvpos}{69mm}
\@setplength{firstfoothpos}{0mm}
\@setplength{sigbeforevskip}{0mm}
\makeatother


\KOMAoptions{
    fontsize=11pt,
    foldmarks=no,
    firsthead=false,
    backaddress=no,
    addrfield=no,
    fromalign=false
}
\setkomavar{date}{}

\KOMAoptions{firstfoot=true}
\setkomavar{firstfoot}{%
\begin{minipage}[t]{0.29\textwidth}
	\begin{center}
	\begin{pspicture}(1in,1in)
		\psbarcode{\PartyInviteLink}{height=1.0 width=1.0}{qrcode}
	\end{pspicture}\\
	{\scriptsize \PartyInviteLabel}
	\end{center}
\end{minipage}
\begin{minipage}[t]{0.29\textwidth}
	\begin{center}
	\begin{pspicture}(1in,1in)
		\obeylines
		\psbarcode{BEGIN:VEVENT^^JSUMMARY:\EventName^^JDESCRIPTION:\EventDesc^^JLOCATION:\EventLocation^^JDTSTART:\EventStart^^JDTEND:\EventEnd^^JEND:VEVENT}{width=1.0
		height=1.0 parse}{qrcode}%
	\end{pspicture}\\
	{\scriptsize \EventLabel}
	\end{center}
\end{minipage}
\begin{minipage}[t]{0.29\textwidth}
	\begin{center}
	\begin{pspicture}(1in,1in)
			\psbarcode{geo:\LocationLat,\LocationLong,\LocationHeight}{width=1.0
			height=1.0}{qrcode}
	\end{pspicture}\\
	{\scriptsize \LocationLabel}
	\end{center}
\end{minipage}
}