Thank you Manfred.<br><br>[...]<br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div class="Wj3C7c">
<br>
</div></div>Looks like an awful lot of repetition, and would have to take a closer<br>
look at your problem for advice on design. &nbsp;However, to get you going,<br>
below is the Boost.PP work to do what you want - but think even that<br>
could be done better..<br>
<br></blockquote><div><br>This is the design of the lib I use. The class I need is templated and policy based. Usually, when I know the instanciation I would like to have, I define a typedef and use it in the rest of the programm. Now, to be more generic, the programm need to let a user choose how to instanciate the class. If you have any idea about a better design, I will be very interesting in reading it.<br>
<br>Best regards,<br><br>Olivier<br></div></div><br clear="all"><br>-- <br>Dr. Olivier Tournaire<br>MATIS - Institut Géographique National<br>73, Ave de Paris<br>94165 St Mandé cedex, France<br><br>tel: (+33) 1 43 98 80 00 - 71 25<br>
fax: (+33) 1 43 98 85 81<br>