完成端口AcceptEx问题，高分求助

Question

const
  WSAID_ACCEPTEX:   TGUID   =   (D1:$b5367df1;D2:$cbac;D3:$11cf;D4:($95,$ca,$00,$80,$5f,$48,$a1,$92));WSAIoctl(ListenSock,SIO_GET_EXTENSION_FUNCTION_POINTER,@WSAID_ACCEPTEX,sizeof(TGUID),@@AcceptEx,
        sizeof(Pointer),nil,nil,nil);
  if rtn<>0 then
  begin
     rtn:=WSAGetLastError();
    showmessage(IntToStr(rtn));
  end;我用上面的代码为什么提取不除AcceptEx的地址，返回错误代码10014  十分不解 求高手帮忙

Answer 1

const
  WSAID_ACCEPTEX  : TGUID = (D1:$b5367df1;  D2:$cbac; D3:$11cf; D4: ($95, $ca,  $00,  $80,  $5f,  $48,  $a1,  $92));type
  LPFN_ACCEPTEX = function(   sListenSocket         : TSocket
                            ; sAcceptSocket         : TSocket
                            ; lpOutputBuffer        : Pointer
                            ; dwReceiveDataLength   : DWORD
                            ; dwLocalAddressLength  : DWORD
                            ; dwRemoteAddressLength : DWORD
                            ; lpdwBytesReceived     : PDWORD
                            ; lpOverlapped          : POverlapped
                            ): BOOL; stdcall;
  TAcceptEx   = LPFN_ACCEPTEX;
fnAcceptEx    : TAcceptEx;
dwTmpValue:Pointer;
dwTmpValue := WSAGetExtensionFunctionPointer(FSocketHandle,WSAID_ACCEPTEX);
if  (Not Assigned(dwTmpValue) ) then fnAcceptEx := dwTmpValue;

Answer 2

if  ((*Not*) Assigned(dwTmpValue) ) then fnAcceptEx := dwTmpValue;