MFC框架仿真<一>

六个关键仿真，在去年的某个时候研究过一段时间，并且对这个仿真做了自己的二次仿真，并且做了笔记，可遗憾的是写的代码没有保存下来。

接触的所谓框架不多，但是说实在话，MFC一开始接触真的很难！这次给我极大的教训，就是研究完一个东西，一定要详细的记录下来，包括流程和完整代码！
头文件MFC.H

#include <iostream.h>

class CObject/*根类*/
{
public:
  CObject()  {cout << "CObject 构造 \n";}
  ~CObject() {cout << "CObject 析构 \n";}
};

class CCmdTarget : public CObject /*二级类*/
{
public:
  CCmdTarget()  {cout << "CCmdTarget 构造 \n";}
  ~CCmdTarget() {cout << "CCmdTarget 析构 \n";}
};

class CWinThread : public CCmdTarget
{
public:
  CWinThread()  {cout << "CWinThread 构造 \n";}
  ~CWinThread() {cout << "CWinThread 析构 \n";}
};

class CWinApp : public CWinThread
{
public:
  CWinApp* m_pCurrentWinApp; /*存放当前对象地址*/
public:
  CWinApp()  {
                 cout << "CWinApp 构造 \n";
                 m_pCurrentWinApp = this;
            }
  ~CWinApp() {cout << "CWinApp 析构 \n";}
};

class CDocument : public CCmdTarget
{
public:
  CDocument()   {cout << "CDocument 构造 \n";}
  ~CDocument()  {cout << "CDocument 析构 \n";}
};

class CWnd : public CCmdTarget /*窗口类*/
{
public:
  CWnd()   {cout << "CWnd 构造 \n";}
  ~CWnd()  {cout << "CWnd 析构 \n";}
};

class CFrameWnd : public CWnd
{
public:
  CFrameWnd()   {cout << "CFrameWnd 构造 \n";}
  ~CFrameWnd()  {cout << "CFrameWnd 析构 \n";}
};

class CView : public CWnd
{
public:
  CView()   {cout << "CView 构造 \n";}
  ~CView()  {cout << "CView 析构 \n";}
};

CWinApp* AfxGetApp(); /*全局函数*/

头文件my.H

#include <iostream.h>
#include "mfc.h"

class CMyWinApp : public CWinApp
{
public:
  CMyWinApp()   {cout << "CMyWinApp 构造 \n";}

  ~CMyWinApp()  {cout << "CMyWinApp 析构 \n";}
};

class CMyFrameWnd : public CFrameWnd
{
public:
  CMyFrameWnd()   {cout << "CMyFrameWnd 构造 \n";}                    

  ~CMyFrameWnd()  {cout << "CMyFrameWnd 析构 \n";}
};

MFC.cpp

#include "my.h"
extern CMyWinApp theApp;

CWinApp* AfxGetApp() /*全局函数AfxGetApp，返回对象地址*/
{
  return theApp.m_pCurrentWinApp;
}

MY.CPP

#include "my.h"
CMyWinApp theApp;/*起点->全局对象*/

void main()
{
    CWinApp* pApp = AfxGetApp();/*返回对象地址*/
}