function from dll

[Szymon Guz <alpha@skynetSMIECI.VONorg.NOJUSZpl>]

Hi,
I've got maybe a trivial question but I still can't solve the problem:

I've a dll written in C under Windows and I want to use specific 
function from that in my Ada program. For loading the library I use the 
WinApi function LoadLibrary and then I use the function GetProcAddress 
to get the Win32.Windef.FARPROC handle to the function that I need. I 
need to map the function from the dll in Ada to have sth like that:

<C++ CODE>
void sth(){}
</C++ CODE>

<ADA CODE>
function sth() return Integer;
</ADA CODE>

now I want to run in the ada function body the function from dll... well 
how to use the Win32.Windef.FARPROC handle ?

Szymon Guz