Problem copying text from latex PDF - special characters

I am using LaTeX in a portuguese document, with special characters such as tilde or cedilla. I have a sample document with the following content:

\documentclass{book}

\usepackage[utf8]{inputenc}

\begin{document}

é canção

\end{document}


My editor (TeXworks) is configured to use UTF8, and the resultant PDF shows the right result, as seen on the following image:

My problem is: when I copy the text from the PDF I get weird characters, and not the text that is exhibited. How to overcome this?

Thanks.

-

\usepackage[T1]{fontenc}

This isn't working for me: I have \usepackage[T1]{fontenc} \usepackage{lmodern} both specified, but I still can't copy say, $\gamma$ out of the resulting PDF. –  Canageek Sep 28 '11 at 18:09
@Canageek: $\gamma$ is not text, it's a math symbol of a math font. However,you could try the same if you use the Unicode text gamma γ. –  Stefan Kottwitz Sep 28 '11 at 19:30