习惯了vb跟.net的开发方式,转到vc下居然很不习惯,
本人有以下几点疑惑,已经传图,请注意图一图二(一,二编号按图上下顺序排列)
比如图二中的CSimpleServerDlg::OnOK,程序是怎么知道onok是CSimpleServerDlg窗体的按扭IDOK的单击事件呢?
为什么在图一中有ON_IDOK:BN_CLICKED这是不是表示BN_CLICKED继承ON_IDOK类一个派生类?
原以为vc底层点,代码会清楚点,居然把按扭事件在代码里表现为CSimpleServerDlg::OnOK,这样太模糊了
为什么不表现为IDOK:CLICK()
本人有以下几点疑惑,已经传图,请注意图一图二(一,二编号按图上下顺序排列)
比如图二中的CSimpleServerDlg::OnOK,程序是怎么知道onok是CSimpleServerDlg窗体的按扭IDOK的单击事件呢?
为什么在图一中有ON_IDOK:BN_CLICKED这是不是表示BN_CLICKED继承ON_IDOK类一个派生类?
原以为vc底层点,代码会清楚点,居然把按扭事件在代码里表现为CSimpleServerDlg::OnOK,这样太模糊了
为什么不表现为IDOK:CLICK()
解决方案 »
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没有// SimpleServerDlg.h : header file
//#if !defined(AFX_SIMPLESERVERDLG_H__31AED04A_0740_4B26_BDD1_9921CCD6A64E__INCLUDED_)
#define AFX_SIMPLESERVERDLG_H__31AED04A_0740_4B26_BDD1_9921CCD6A64E__INCLUDED_#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000#include "winsock.h"
#pragma comment(lib, "wsock32")/////////////////////////////////////////////////////////////////////////////
// CSimpleServerDlg dialogclass CSimpleServerDlg : public CDialog
{
// Construction
public:
void CleanUp();
void StartUp();
CSimpleServerDlg(CWnd* pParent = NULL); // standard constructor// Dialog Data
//{{AFX_DATA(CSimpleServerDlg)
enum { IDD = IDD_SIMPLESERVER_DIALOG };
UINT m_nPort;
//}}AFX_DATA // ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CSimpleServerDlg)
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
virtual BOOL OnCommand(WPARAM wParam, LPARAM lParam);
//}}AFX_VIRTUAL// Implementation
protected:
HICON m_hIcon; SOCKET m_hSocket;
SOCKADDR_IN m_addr; // Generated message map functions
//{{AFX_MSG(CSimpleServerDlg)
virtual BOOL OnInitDialog();
afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
virtual void OnOK();
afx_msg void OnDestroy();
afx_msg void OnButton1();
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.#endif // !defined(AFX_SIMPLESERVERDLG_H__31AED04A_0740_4B26_BDD1_9921CCD6A64E__INCLUDED_)
2、在消息中有映射哪里找呢?3、然后CPP中有定义,有,不过是CSimpleServerDlg::OnOK这样的,好象跟按扭没什么关联
// SimpleServerDlg.cpp : implementation file
//#include "stdafx.h"
#include "SimpleServer.h"
#include "SimpleServerDlg.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App Aboutclass 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()/////////////////////////////////////////////////////////////////////////////
// CSimpleServerDlg dialogCSimpleServerDlg::CSimpleServerDlg(CWnd* pParent /*=NULL*/)
: CDialog(CSimpleServerDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CSimpleServerDlg)
m_nPort = 2350;
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
m_hSocket = NULL;
}void CSimpleServerDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CSimpleServerDlg)
DDX_Text(pDX, IDC_PORT, m_nPort);
//}}AFX_DATA_MAP
}BEGIN_MESSAGE_MAP(CSimpleServerDlg, CDialog)
//{{AFX_MSG_MAP(CSimpleServerDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_WM_DESTROY()
ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// CSimpleServerDlg message handlersBOOL CSimpleServerDlg::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
StartUp();
return TRUE; // return TRUE unless you set the focus to a control
}void CSimpleServerDlg::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 CSimpleServerDlg::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 CSimpleServerDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}void CSimpleServerDlg::OnOK()
{
if(m_hSocket != NULL){
closesocket(m_hSocket);
m_hSocket = NULL;
}
if(m_hSocket == NULL){
m_hSocket = socket(AF_INET, SOCK_STREAM,0);
ASSERT(m_hSocket != NULL);
}
UpdateData(); m_addr.sin_family = AF_INET;
m_addr.sin_addr.S_un.S_addr = INADDR_ANY;
m_addr.sin_port = htons(m_nPort); int ret = 0;
int error = 0;
ret = bind(m_hSocket, (LPSOCKADDR)&m_addr, sizeof(m_addr));
if(ret == SOCKET_ERROR){
TRACE("Bind Error: %d \n", (error = WSAGetLastError()));
return ;
}
ret = listen(m_hSocket, 2);
if(ret == SOCKET_ERROR){
TRACE("Listen Error: %d \n", (error = WSAGetLastError()));
return ;
}
SOCKET s = accept(m_hSocket, NULL, NULL);
if(s == SOCKET_ERROR){
TRACE("Accept Error: %d \n", (error = WSAGetLastError()));
return ;
} char buff[256];
ret = recv(s, buff, 256, 0);
if(ret == 0 || ret == SOCKET_ERROR ){
TRACE("Recv data error: %d\n", WSAGetLastError());
return ;
}
char* name = NULL;
char* pass = NULL;
int len = 0;
len = buff[0];
name = new char[len + 1];
for(int i = 0; i < len; i++)
name[i] = buff[i+1];
int len2 = buff[len + 1];
pass = new char[len2 + 1];
for(i = 0; i < len2; i++)
pass[i] = buff[i + 2 + len];
pass[len2] = '\0';
name[len] = '\0'; CString str;
if(strcmp(name, "ware") != 0){
str = _T("用户名不正确!");
TRACE(_T("用户名不正确!\n"));
}
else{
if(strcmp(pass, "11111") != 0){
str = _T("用户密码不正确!");
TRACE(_T("用户密码不正确!\n"));
}
}
if(str.IsEmpty())
str = _T("你的帐号还有:20.325元");
char* buf = str.GetBuffer(0);
ret = send(s, buf, str.GetLength(), 0);
if(ret != str.GetLength()){
TRACE("Send data error: %d\n", WSAGetLastError());
return ;
}
delete [] name;
delete [] pass;
}void CSimpleServerDlg::StartUp()
{
WSADATA wsaData;
WORD version = MAKEWORD(2, 0);
int ret = WSAStartup(version, &wsaData);
if(ret != 0)
TRACE("Initilize Error!\n");
}void CSimpleServerDlg::CleanUp()
{
if (WSACleanup() != 0){
TRACE("UnInitilize Error:%d\n", WSAGetLastError());
}
}void CSimpleServerDlg::OnDestroy()
{
CDialog::OnDestroy();
CleanUp();
}void CSimpleServerDlg::OnButton1()
{
// TODO: Add your control notification handler code here
}
最后可以看到调用了CDialog::OnOk(),要看到地层的话,直接用SDK写,那样就很清晰,MFC封装了
程序是怎么知道onok是CSimpleServerDlg窗体的按扭IDOK的单击事件呢?
请看一下消息映射 第一张图中刚好说明了消息处理函数与资源ID绑定