[Python-Dev] Handling support for newer OS features at run time

[Richard Oudkerk]

On 27/11/2012 10:49pm, Trent Nelson wrote:
>      Ideally, a Windows binary should make WSAPoll/select.poll()
>      available if running on Vista or above, without impacting
>      the ability to run on XP.

I assume you can do something like

     int WSAAPI (*pWSAPoll)(WSAPOLLFD *, ULONG, INT);
     HINSTANCE hWinsock2 = GetModuleHandle("WS2_32");
     *(FARPROC *)&pWSAPoll = GetProcAddress(hWinsock2, "WSAPoll");
     if (pWSAPoll == NULL)
         ...

to get a function pointer for WSAPoll on versions which support it.

Modules/_winapi.c does something similar to get CancelIoEx.

-- 
Richard