what this code mean?

[RIGHTS]

typedef int (WINAPI* t_WSASend)(SOCKET,LPWSABUF,DWORD,LPDWORD,DWORD,LPWSAOVERLAPPED,LPWSAOVERLAPPED_COMPLETION_ROUTINE );

Can you explain above code

[keskiverto]

I do presume that you use some proprietary (i.e. not part of C or C++ standards) definitions. I have no access to them, but you have. Consult the MS documentation to see the definition of words: WINAPI, SOCKET, LPWSABUF, DWORD, LPDWORD, DWORD, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE.

The rest is probably similar in nature to:
typedef int ( * foo)( int, int );

You already had a thread about function pointers.

The foo is a name of a type of function pointer object that can point to any function that takes two integer arguments and return an int value.

[RIGHTS]

Thanks now i understand!