CODEWITHSUNDEEP
c++
Montroz
Montroz

Reputation: 83

Function pointer, was not declared in this scope

I use function pointer 

MyWSARecvProc OriginalWSARecvProc = (MyWSARecvProc) WSARecv;

Function WSARecv is declared in winsock2.h:

WINSOCK_API_LINKAGE int WINAPI WSARecv(SOCKET,
    LPWSABUF, DWORD, LPDWORD, LPDWORD, LPWSAOVERLAPPED,
    LPWSAOVERLAPPED_COMPLETION_ROUTINE);

I include winsock2.h in my file, but there are error:

error: 'WSARecv' was not declared in this scope

Why does it happen? How to fix it? Thanks.

edited

I include winsock2.h before windows.h as Adrian Ratnapala writed. Now I have other errors:

src\netredirect.o:netredirect.cpp:(.data+0x18): undefined reference to `WSARecv@28'
src\netredirect.o:netredirect.cpp:(.data+0x1c): undefined reference to `WSARecvFrom@36'
src\netredirect.o:netredirect.cpp:(.data+0x20): undefined reference to `WSASend@28'
src\netredirect.o:netredirect.cpp:(.data+0x24): undefined reference to `WSASendTo@36'
c:/mingw/bin/../lib/gcc/mingw32/4.8.1/../../../../mingw32/lib/libmingw32.a(main.o): In function `main':
e:\p\giaw\src\pkg\mingwrt-4.0.3-1-mingw32-src\bld/../mingwrt-4.0.3-1-mingw32-src/src/libcrt/crt/main.c:91: undefined reference to `WinMain@16'

Upvotes: 0

Views: 1146

Answers (2)

SirLeoncavallo
SirLeoncavallo

Reputation: 119

If to you seem that the function is in the scope,just try to move it like a global function and see what happen.(Don't leave it there,just see if the problem is really because it's out of the scope)

Upvotes: 0

Deduplicator
Deduplicator

Reputation: 45654

The error message is quite explicit. WSARecv is not known at the point you use it. Either move the function definition before its first use, or add a declaration before its first use.

Upvotes: 1

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