求救（关于WSAIoctl的用法)

Question

各位：有没有关于 WSAIoctl 的使用方法？我找了DELPHI里面没有关于此的定义，从VC中得到定义：
int WSAIoctl(
  SOCKET s,
  DWORD dwIoControlCode,
  LPVOID lpvInBuffer,
  DWORD cbInBuffer,
  LPVOID lpvOutBuffer,
  DWORD cbOutBuffer,
  LPDWORD lpcbBytesReturned,
  LPWSAOVERLAPPED lpOverlapped,
  LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine
); 却不知道每个参数的具体结构？有没谁写过这方面的程序，望告之，不胜感谢！

Answer 1

WSAIoctl
The Windows Sockets WSAIoctl function controls the mode of a socket.int WSAIoctl (
  SOCKET s,                                               
  DWORD dwIoControlCode,                                  
  LPVOID lpvInBuffer,                                     
  DWORD cbInBuffer,                                       
  LPVOID lpvOUTBuffer,                                    
  DWORD cbOUTBuffer,                                      
  LPDWORD lpcbBytesReturned,                              
  LPWSAOVERLAPPED lpOverlapped,                           
  LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionROUTINE  
);
 
Parameters
s 
[in] A descriptor identifying a socket. 
dwIoControlCode 
[in] The control code of operation to perform. 
lpvInBuffer 
[in] A pointer to the input buffer. 
cbInBuffer 
[in] A number indicating the size of the input buffer. 
lpvOutBuffer 
[out] A pointer to the output buffer. 
cbOutBuffer 
[in] A number indicating the size of the output buffer. 
lpcbBytesReturned 
[out] A pointer to actual number of bytes of output. 
lpOverlapped 
[in] A pointer to a WSAOVERLAPPED structure (ignored for non-overlapped sockets). 
lpCompletionRoutine 
[in] A pointer to the completion routine called when the operation has been completed (ignored for non-overlapped sockets).

Answer 2

谢谢linx88(haozi) ，不过你给的我都知道。关键是里面的参数结构我得不到。不过现在已经有了。