Ok, I&#39;ve figured out the answer to question 2:<div><br></div><div><div><font class="Apple-style-span" face="&#39;courier new&#39;, monospace">    void call(Args... args)</font></div><div><font class="Apple-style-span" face="&#39;courier new&#39;, monospace">    {</font></div>

<div><font class="Apple-style-span" face="&#39;courier new&#39;, monospace">        boost::function&lt; void() &gt; bound_fn = boost::bind(f, args...);</font></div><div><font class="Apple-style-span" face="&#39;courier new&#39;, monospace">        bound_fn(); // in effect the bound_fn will be stored in a queue for later envocation by a different thread</font></div>

<div><font class="Apple-style-span" face="&#39;courier new&#39;, monospace">    }</font></div><div><br></div><div>Interested in your comments on my other 2 questions?</div><div><br></div><div>Thanks again</div><div>Steve</div>

<div><br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div>[snip]</div></blockquote><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">

<div>1. Please can you give an explanation of what the compiler is actually doing in your make_func_helper() and  make_indexes_...() - This goes beyond my capabilities at the moment, and I&#39;m always looking to improve my knowledge.</div>



<div><br></div><div>3. In attached file &quot;attempt_2.cpp&quot; at Line 27, there&#39;s a struct cb_ with a typedef &quot;type&quot; of the member function pointer of the form T::fn(Args...). </div><div class="im">

<div><br></div><div><font face="&#39;courier new&#39;, monospace">    template&lt; class T, class... Args &gt;</font></div></div><div class="im"><div><font face="&#39;courier new&#39;, monospace">    struct cb_ { typedef void (T::*type)(Args...); };</font></div>



<div><br></div></div><div>As far as I can see, this is of the same form as Peter&#39;s void (T::*pm)(Args...) member function pointer is it not? How come the compiler can&#39;t match &amp;X::f with  typename cb_&lt;T, Args...&gt;::type?</div>



<div>[/snip]</div></blockquote></div></div>