MFC socket编程,

MFC socket编程,求助!
我做了一个对话框程序，可以一边下五子棋，一边聊天。请问是建一个socket呢还是，建两个（一个用来传送五子棋，一个聊天）。现在五子棋可以联机了，基本上实现了。但聊天不能实现，也没有提示，一点击发送按钮程序就自动退出，求助啊！
fivechessDlg 代码如下：

C/C++ code

// fivechessDlg.cpp : implementation file
//

#include "stdafx.h"
#include "fivechess.h"
#include "fivechessDlg.h"
#include "SeverDiag.h"
#include "ClientDiag.h"
#include "SeverScoket.h"
#include "MainFrm.h"
#include "chessboard.h"
#include "resource.h"

//#include <afxsock.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
    CAboutDlg();
    
    // Dialog Data
    //{{AFX_DATA(CAboutDlg)
    enum { IDD = IDD_ABOUTBOX };
    //}}AFX_DATA

    // ClassWizard generated virtual function overrides
    //{{AFX_VIRTUAL(CAboutDlg)
    protected:
    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
    //}}AFX_VIRTUAL

    // Implementation
protected:
    //{{AFX_MSG(CAboutDlg)
    afx_msg void OnZhuye();
    afx_msg void OnForum();
    //}}AFX_MSG
    DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
    //{{AFX_DATA_INIT(CAboutDlg)
    //}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(CAboutDlg)
    //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
    //{{AFX_MSG_MAP(CAboutDlg)
    ON_BN_CLICKED(IDC_ZHUYE, OnZhuye)
    ON_BN_CLICKED(IDC_FORUM, OnForum)
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFivechessDlg dialog

CFivechessDlg::CFivechessDlg(CWnd* pParent /*=NULL*/)
    : CDialog(CFivechessDlg::IDD, pParent)
{
    //{{AFX_DATA_INIT(CFivechessDlg)
        // NOTE: the ClassWizard will add member initialization here
    //}}AFX_DATA_INIT
    // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
    m_hIcon = AfxGetApp()->LoadIcon(IDI_ICON1);
    
}

void CFivechessDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(CFivechessDlg)
        // NOTE: the ClassWizard will add DDX and DDV calls here
    //}}AFX_DATA_MAP

}

BEGIN_MESSAGE_MAP(CFivechessDlg, CDialog)
    //{{AFX_MSG_MAP(CFivechessDlg)
    ON_WM_SYSCOMMAND()
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    ON_COMMAND(IDD_ABOUTBOX, OnAboutbox)
    ON_COMMAND(ID_MENU_CLIENT, OnMenuClient)
    ON_COMMAND(ID_MENU_SEVER, OnMenuSever)
    ON_BN_CLICKED(IDC_BIN_SEND, OnBinSend)
    //}}AFX_MSG_MAP
    ON_MESSAGE(WM_RECVDATA,OnRecvData)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFivechessDlg message handlers

BOOL CFivechessDlg::OnInitDialog()
{
    CDialog::OnInitDialog();

    // Add "About..." menu item to system menu.

    // IDM_ABOUTBOX must be in the system command range.
    ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
    ASSERT(IDM_ABOUTBOX < 0xF000);

    CMenu* pSysMenu = GetSystemMenu(FALSE);
    if (pSysMenu != NULL)
    {
        CString strAboutMenu;
        strAboutMenu.LoadString(IDS_ABOUTBOX);
        if (!strAboutMenu.IsEmpty())
        {
            pSysMenu->AppendMenu(MF_SEPARATOR);
            pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
        }
    }
    
    // Set the icon for this dialog.  The framework does this automatically
    //  when the application's main window is not a dialog
    SetIcon(m_hIcon, TRUE);            // Set big icon
    SetIcon(m_hIcon, FALSE);        // Set small icon
    
    // TODO: Add extra initialization here
    RECVPARM *pRecvParam=new RECVPARM;
    pRecvParam->sock=m_socket;             //初始化
    pRecvParam->hwnd=m_hWnd;
    HANDLE hThread=CreateThread(NULL,0,RecvProc,(LPVOID)pRecvParam,0,NULL);  //创建线程,RecvProc为线程函数
    CloseHandle(hThread);
    InitSocket();
    chess.Create(this,ID_CHESSBOARD,this);
    
    return TRUE;  //

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