Geometry : unable to change page size

Question

I am trying to work on a paper with specific size : 240mm x 160 mm. To generate my paper I am using pdflatex from texlive.

I used to do this :

\usepackage{ifpdf}
\ifpdf
  \pdfpageheight=240mm
  \pdfpagewidth=160mm
\else
  \special{papersize=240mm,160mm}
\fi

It was working perfectly, but it is not compatible with TikZ (see my previous thread).

Someone told me to use geometry: unfortunately, it doesn't seem to work. Here is my rather simple code :

\documentclass[12pt,twoside,draft]{book}
\usepackage{fancyhdr}
\pagestyle{fancy}
\usepackage[T1]{fontenc}
\usepackage{tikz}

\usepackage{geometry}
\usepackage[paperheight=240mm,paperwidth=160mm]{geometry}

\pdfpagewidth=\paperwidth
\pdfpageheight=\paperheight
\begin{document}
\end{document}

Unfortunately, the page is not correctly shaped... Any help would be really appreciated!

Answer 1

Don't ignore compilation errors

\usepackage{geometry}
\usepackage[paperheight=240mm,paperwidth=160mm]{geometry}160mm]{geometry}

gives an option class error. Remove the first line and the generated PDF has the correct size