Type Definition winapi::um::mswsock::LPFN_CONNECTEX

type LPFN_CONNECTEX = Option<unsafe extern "system" fn(s: SOCKET, name: *const SOCKADDR, namelen: c_int, lpSendBuffer: PVOID, dwSendDataLength: DWORD, lpdwBytesSent: LPDWORD, lpOverlapped: LPOVERLAPPED) -> BOOL>;