学步园

MFC类层次结构

//------------------------------------------------------------------<br /> // MFC.H<br /> //------------------------------------------------------------------<br /> #include <iostream><br /> using namespace std;<br /> class CObject<br /> {<br /> public:<br /> CObject::CObject() {cout<<"CObject Constructor"<< endl;}<br /> CObject::~CObject() {cout<<"CObject Destructor"<< endl;}<br /> };<br /> class CCmdTarget : public CObject<br /> {<br /> public:<br /> CCmdTarget::CCmdTarget() {cout<<"CCmdTarget Constructor"<< endl;}<br /> CCmdTarget::~CCmdTarget() {cout<<"CCmdTarget Destructor"<< endl;}<br /> };<br /> class CWinThread : public CCmdTarget<br /> {<br /> public:<br /> CWinThread::CWinThread() {cout<<"CWinThread Constructor"<< endl;}<br /> CWinThread::~CWinThread() {cout<<"CWinThread Destructor"<< endl;}<br /> };<br /> class CWinApp : public CWinThread<br /> {<br /> public:<br /> CWinApp::CWinApp() { m_pCurrentWinApp = this; cout<<"CWinApp Constructor"<< endl;}<br /> CWinApp::~CWinApp() {cout<<"CWinApp Destructor"<< endl;}<br /> public:<br /> CWinApp* m_pCurrentWinApp;<br /> };</p> <p>class CDocument : public CCmdTarget<br /> {<br /> public:<br /> CDocument::CDocument() {cout<<"CDocument Constructor"<< endl;}<br /> CDocument::~CDocument() {cout<<"CDocument Destructor"<< endl;}<br /> };</p> <p>class CWnd : public CCmdTarget<br /> {<br /> public:<br /> CWnd::CWnd() {cout<<"CWnd Constructor"<< endl;}<br /> CWnd::~CWnd() {cout<<"CWnd Destructor"<< endl;}<br /> };<br /> class CFrameWnd : public CWnd<br /> {<br /> public:<br /> CFrameWnd::CFrameWnd() {cout<<"CFrameWnd Constructor"<< endl;}<br /> CFrameWnd::~CFrameWnd() {cout<<"CFrameWnd Destructor"<< endl;}<br /> };<br /> class CView : public CWnd<br /> {<br /> public:<br /> CView::CView() {cout<<"CView Constructor"<< endl;}<br /> CView::~CView() {cout<<"CView Destructor"<< endl;}<br /> };<br /> // global function<br /> CWinApp* AfxGetApp();<br /> //------------------------------------------------------------------<br /> // MY.H<br /> //------------------------------------------------------------------<br /> #include <iostream><br /> #include "MFC.h"<br /> class CMyWinApp : public CWinApp<br /> {<br /> public:<br /> CMyWinApp::CMyWinApp() { cout<<"CMyWinApp Constructor"<< endl;}<br /> CMyWinApp::~CMyWinApp() {cout<<"CMyWinApp Destructor"<< endl;}<br /> };<br /> class CMyFrameWnd : public CFrameWnd<br /> {<br /> public:<br /> CMyFrameWnd::CMyFrameWnd() {cout<<"CMyFrameWnd Constructor"<< endl;}<br /> CMyFrameWnd::~CMyFrameWnd() {cout<<"CMyFrameWnd Destructor"<< endl;}<br /> };<br /> //------------------------------------------------------------------<br /> // MFC.CPP<br /> //------------------------------------------------------------------<br /> #include "MY.h"<br /> extern CMyWinApp theApp;<br /> CWinApp* AfxGetApp()<br /> {<br /> return theApp.m_pCurrentWinApp;<br /> }<br /> //------------------------------------------------------------------<br /> // MY.CPP<br /> //------------------------------------------------------------------<br /> #include "MY.h"<br /> CMyWinApp theApp; // global object<br /> void main()<br /> {<br /> CWinApp* pApp = AfxGetApp();<br /> }<br />