VC++ undeclared identifier - c++

Question

Why this in Client.cpp file I'm getting error C2065:'TunnelContainer': undefined identifier?
Client.cpp code:
#include "stdafx.h"
#include "GClientLib.h"
using namespace GClientLib;
int _tmain(int argc, _TCHAR* argv[])
{
SettingsReader^ settings = gcnew SettingsReader();
SocketToObjectContainer^ STOContainer = gcnew SocketToObjectContainer();
TunnelContainer^ tunnels = gcnew TunnelContainer();
timeval time;
time.tv_sec = 0;
time.tv_usec = 300000;
....
GClientLib.h code fragment:
#include "Structures.h"
#include "Globals.h"
#include "SettingsReader.h"
#include "SocketToObjectContainer.h"
#include "SocketToSocketContainer.h"
#include "TunnelContainer.h"
Updated. SocketToSocketContainer.h
#ifndef SocketToSocketContainer_H
#define SocketToSocketContainer_H
#include <cliext/utility>
#include <cliext/list>
#include <cliext/algorithm>
namespace GClientLib {
ref class SocketToSocketContainer {
private:
cliext::list<cliext::pair<int, int>> sarasas;
public:
SocketToSocketContainer(void);
void Add(int, int);
int Find(int);
void Delete(int);
};
};
#endif
GclientLib is lib project, used in Client application. Build on Visual Studio 2013 C++/CLI enabled
TunnelContainer.h code:
#ifndef GClientLib_H
#define GClientLib_H
#include <cliext/utility>
#include <cliext/list>
#include <cliext/algorithm>
namespace GClientLib {
enum TunnelStatus
{
JUNGIASI = 1, //Uzmezgamas rysys tarp klientu
LAUKIA_PROGRAMOS = 2, // Laukia kol prisijungs norima kliento porgramine iranga
KOMUNIKACIJA = 3 // Tuneliu vyksta komunikacija
};
ref struct Tunnel
{
int tag; //Tunelio zyme
int dport; //Prievadas, prie kurio jungesi
int clientid; //Kliento ID su kuriuo sujungta
int sport; //Vietinis prievadas
int serverSocket; //Socketas, prie kuris priima duomenu srauta
int status; // Sujungimo statusas (Jungiasi, prisjungta, laukia jungties)
};
ref class TunnelContainer {
private:
// Tuneliu sarasas
cliext::list<cliext::pair<int, Tunnel^>> sarasas;
public:
// Konstruktorius
TunnelContainer();
// Pridedamas naujas tunelis. PERRASO statusa i JUNGIAMASI
Tunnel^ Add(Tunnel^ tunelis);
// Pridedamas naujas tunelis. Statusa nustato i JUNGIAMASI
Tunnel^ Add(int tag, int dport, int clientid, int sport, int serverSocket);
// Tunelio paieska pagal tag
Tunnel^ Find(int tag);
// Salina tuneli pagal tag
Tunnel^ Remove(int tag);
// Keicia tunelio statusa
void ChangeStatus(int tag, TunnelStatus status);
};
};
#endif
UPDATE
After moving TunnelContainer.h into first position getting this error in ToServerSocket.h file:
Error 1 error C2143: syntax error : missing ';' before '^' line 16
Error 2 error C4430: missing type specifier - int assumed. Note: C++ does not support default-int line 16
ToServerSocket.h code:
#ifndef ToServerSocket_H
#define ToServerSocket_H
#include <iostream>
#include "gNetSocket.h"
#include "ServerSocket.h"
#include "OutboundSocket.h"
namespace GClientLib {
ref class ToServerSocket : public gNetSocket {
private:
char *commandBuffer;
line 16 --->TagGenerator^ tag;
SocketToObjectContainer^ STOC;
SettingsReader^ settings;
public:
ToServerSocket(string ip, string port, fd_set* skaitomiSocket, fd_set* rasomiSocket, fd_set* klaidingiSocket, SocketToObjectContainer^ STOC, SettingsReader^ settings);
virtual int Send(char* data, int lenght) override;
virtual void Recive(SocketToObjectContainer^ container) override;
virtual void Connect() override;
virtual void Reconnect() override;
void CommandList(int page);
void CommandListAck(int rRecv);
void CommandHello();
void CommandHelp();
void CommandInitConnect(int id, int port, SocketToObjectContainer^ container);
void CommandConnect(SocketToObjectContainer^ container);
void CommandClear();
void CommandBeginRead(SocketToObjectContainer^ container);
void CommandClientConnectAck(SocketToObjectContainer^ container);
void CommandInitConnectAck();
void CommandJsonList(int page, SOCKET socket);
void CommandJsonListAck(int rRecv, SocketToObjectContainer^ container);
void CommandJsonInitConnect(int id, int port, SOCKET socket);
void CommandJSONConnect(SocketToObjectContainer^ container);
void CommandJsonInitConnectAck();
int GenerateTag();
};
};
#endif

Answer 1

you probably have a syntax error or missing ; or missing closing " in the include before that, "SocketToSocketContainer.h".
#include is a precompiler statement, all it does is include the content of the given file into the main file; it is your task to make sure that the result is a valid code. So if one include has an incomplete statement, the content of the second include continues that statement.
Edit: It could be even further up in the list - any open or incorrect #IFDEF in any include could remove the whole rest

Answer 2

I have found my mistake. GClientLib_H was already defined.
#ifndef GClientLib_H
#define GClientLib_H
Changed to
#ifndef TunnelContainer_H
#define TunnelContainer_H
Now everything is working. Thank you for quick responses