file.cpp

一个菜单应用程序

#include <afxwin.h> 
#include "resource.h"
class sample:public CFrameWnd
{
public:
  sample()
  {
  Create(NULL,"MFC Window",WS_OVERLAPPEDWINDOW,rectDefault,NULL,MAKEINTRESOURCE(IDR_MENU1),0,NULL);
  MessageBox("My MFC Window","CFrame constructor",MB_OK);
  }
  void OnLButtonDown(UINT,CPoint)//添加的消息处理函数
  {
    ::MessageBox(NULL,"ddd","dd",MB_OK);
  }

  DECLARE_MESSAGE_MAP()//消息映射的申明

};

BEGIN_MESSAGE_MAP(sample,CFrameWnd)
//这个宏填写两个参数，一个子类，一个父类
  ON_WM_LBUTTONDOWN()//左键按下的事件
END_MESSAGE_MAP()//结束宏
class App:public CWinApp
{
public:
BOOL InitInstance();
BOOL ExitInstance();

};



BOOL App::InitInstance()
{
MessageBox(0,"My MFC Window","InitInstance",MB_OK|MB_ICONASTERISK);
sample *obj;
obj=new sample;
m_pMainWnd=obj;
obj->ShowWindow(SW_SHOWMAXIMIZED);
return TRUE;
}

BOOL App::ExitInstance()
{
MessageBox(0,"My Window","ExitInstance",MB_OK|MB_ICONHAND);
return TRUE;
}

App a;