VC WSAAsyncSelect问题

wdz9804 2009-08-18 06:11:39

各位大侠：
下面是我写的一个Socket，在调试的时候程序总会进入
if(WSAAsyncSelect(ServerSock,hwnd, NETWORK_EVENT,
FD_ACCEPT | FD_CLOSE | FD_READ | FD_WRITE) == SOCKET_ERROR)
{
// MessageBox("注册网络异步事件失败!");
WSACleanup();
return FALSE;
}
这个是为什么呢？难道是我定义的消息有问题吗？

下面是我的代码，请帮忙啊！！！！

// SocketSeverDlg.cpp : implementation file
//

#include "stdafx.h"
#include "SocketSever.h"
#include "SocketSeverDlg.h"
#include <winsock2.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
#pragma comment(lib, "ws2_32.lib ")
#define NETWORK_EVENT WM_USER+166
/////////////////////////////////////////////////////////////////////////////
// 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
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)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////

CSocketSeverDlg::CSocketSeverDlg(CWnd* pParent /*=NULL*/)
: CDialog(CSocketSeverDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CSocketSeverDlg)
m_socket_status = _T("");
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

}

void CSocketSeverDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CSocketSeverDlg)
DDX_Text(pDX, IDC_SOCKET_STATUS, m_socket_status);
//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSocketSeverDlg, CDialog)
//{{AFX_MSG_MAP(CSocketSeverDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()

ON_MESSAGE(NETWORK_EVENT,OnNetEvent)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSocketSeverDlg message handlers

BOOL CSocketSeverDlg::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

return TRUE; // return TRUE unless you set the focus to a control
}

void CSocketSeverDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}

// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.

void CSocketSeverDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting

SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;

// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}

// The system calls this to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CSocketSeverDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}

bool CSocketSeverDlg::initServer(HWND hwnd){

WSADATA wsaData;
//初始化TCP协议

BOOL ret = WSAStartup(MAKEWORD(2,2), &wsaData);
if(ret != 0)
{
//MessageBox("初始化网络协议失败!");
return FALSE;
}
//创建服务器端套接字
ServerSock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if(ServerSock == INVALID_SOCKET)
{
//MessageBox("创建套接字失败!");
closesocket(ServerSock);
WSACleanup();
return FALSE;
}

//绑定到本地一个端口上
sockaddr_in localaddr;
localaddr.sin_family = AF_INET;
localaddr.sin_port = htons(8888); //端口号不要与其他应用程序冲突
localaddr.sin_addr.s_addr = 0;
if(bind(ServerSock ,(struct sockaddr*)&localaddr,sizeof(sockaddr)) == SOCKET_ERROR)
{
//MessageBox("绑定地址失败!");
closesocket(ServerSock);
WSACleanup();
return FALSE;
}
//获得窗口的句柄

if(WSAAsyncSelect(ServerSock,hwnd, NETWORK_EVENT,
FD_ACCEPT | FD_CLOSE | FD_READ | FD_WRITE) == SOCKET_ERROR)
{
// MessageBox("注册网络异步事件失败!");
WSACleanup();
return FALSE;
}

listen(ServerSock, 5); //设置侦听模式

return TRUE;
}

void CSocketSeverDlg::OnClose(SOCKET curSocket){
}
void CSocketSeverDlg::OnSend(SOCKET curSocket){
}
void CSocketSeverDlg::OnReceive(SOCKET curSocket){
}
void CSocketSeverDlg::OnAccept(SOCKET curSocket){
}
void CSocketSeverDlg:: OnNetEvent(WPARAM wParam, LPARAM lParam){
//调用Winsock API函数，得到网络事件类型
int iEvent = WSAGETSELECTEVENT(lParam);

//调用Winsock API函数，得到发生此事件的客户端套接字
SOCKET CurSock= (SOCKET)wParam;

switch(iEvent)
{
case FD_ACCEPT: //客户端连接请求事件
OnAccept(CurSock);
break;
case FD_CLOSE: //客户端断开事件:
OnClose(CurSock);
break;
case FD_READ: //网络数据包到达事件
OnReceive(CurSock);
break;
case FD_WRITE: //发送网络数据事件
OnSend(CurSock);
break;
default: break;
}

}

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