Composite Types and Function Parameters

<table border="0" cellpadding="0" cellspacing="0"><tr><td style="font: inherit;" valign="top">Hi guys, got across an
interestingproblem of passing params to a function in postgre: is it possible to pass a composite parameter to a
functionwithout declaring a type first? <br /><br />For example:<br /><br />// declare a function<br />create function
TEST( object??? )<br />   ....<br />   object???.paramName    // using parameter<br />   ....<br /><br />// calling<br
/>performTEST( ROW(string, int, bool, etc...) )<br /><br />Or do I have to do the type declaration for that
parameter?<br/><br />Thanks!<br /></td></tr></table><br />