MFC学习笔记五——消息映射（Message Mapping）

//-------------------------------------------------------------------// MFC.H//-------------------------------------------------------------------#define TRUE 1#define FALSE 0typedef char* LPSTR;typedef const char* LPCSTR;typedef int BOOL;typedef unsigned char BYTE;typedef unsigned short WORD;typedef int INT;typedef unsigned int UINT;typedef long LONG;#define WM_COMMAND 0x0111#define CObjectid Oxffff#define CCmdTargetid 1#define CWinThreadid 11#define CWinAppid 111#define CMyWinAppid 1111#define CWndid 12#define CFrameWndid 121#define CMyFrameWndid 1211#define CViewid 122#define CMyViewid 1221#define CDocumentid 13#define CMyDocid 131#include <iostream>using namespace std;//////////////////////////////////////////////////////////////////// Window message map handingstruct AFX_MSGMAP_ENTRY;struct AFX_MSGMAP{AFX_MSGMAP* pBaseMessageMap;AFX_MSGMAP_ENTRY* lpEntries;};#define DECLARE_MESSAGE_MAP() /static AFX_MSGMAP_ENTRY _messageEntries[]; /static AFX_MSGMAP messageMap; /virtual AFX_MSGMAP* GetMessageMap() const;#define BEGIN_MESSAGE_MAP(theClass, baseClass) /AFX_MSGMAP* theClass::GetMessageMap() const / { return &theClass::messageMap; } /AFX_MSGMAP theClass::messageMap = / { &(baseClass::messageMap), (AFX_MSGMAP_ENTRY*) &(theClass::_messageEntries) }; /AFX_MSGMAP_ENTRY theClass::_messageEntries[] = /{#define END_MESSAGE_MAP() /{ 0, 0, 0, 0, AfxSig_end, (AFX_PMSG)0 } /};// Message map signature values and macros in separate header#include "AFXMSG_.h"//class CObject;//struct CRuntimeClass//{//LPCSTR m_lpszClassName;//int m_nObjectSize;//UINT m_wSchema;//CObject* (PASCAL* m_pfnCreateObject)();//CRuntimeClass* m_pBaseClass;////CObject* CreateObject();//static CRuntimeClass* PASCAL Load();////static CRuntimeClass* pFirstClass;//CRuntimeClass* m_pNextClass;//};////struct AFX_CLASSINIT//{//AFX_CLASSINIT(CRuntimeClass* pNewClass);//};////#define RUNTIME_CLASS(class_name) ///(&class_name::class##class_name)////#define DECLARE_DYNAMIC(class_name) ///public: ///static CRuntimeClass class##class_name; ///virtual CRuntimeClass* GetRuntimeClass() const;////#define DECLARE_DYNCREATE(class_name) ///DECLARE_DYNAMIC(class_name) ///static CObject* PASCAL CreateObject();////#define _IMPLEMENT_RUNTIMECLASS(class_name,base_class_name,wSchema,pfnNew) ///static char _lpsz##class_name[] = #class_name; ///CRuntimeClass class_name::class##class_name = { ///_lpsz##class_name, sizeof(class_name), wSchema, pfnNew, ///RUNTIME_CLASS(base_class_name), NULL}; ///static AFX_CLASSINIT _init_##class_name(&class_name::class##class_name); ///CRuntimeClass* class_name::GetRuntimeClass() const ///{ return &class_name::class##class_name; } /////#define IMPLEMENT_DYNMIC(class_name, base_class_name) ///_IMPLEMENT_RUNTIMECLASS(class_name, base_class_name, 65535, NULL)////#define IMPLEMENT_DYNCREATE(class_name, base_class_name) ///CObject* PASCAL class_name::CreateObject() ///{ return new class_name; } ///_IMPLEMENT_RUNTIMECLASS(class_name,base_class_name,65535, class_name::CreateObject)class CObject{public:CObject::CObject() { }CObject::~CObject() { }//virtual CRuntimeClass* GetRuntimeClass() const;//BOOL IsKindOf(const CRuntimeClass* pClass) const;////public://static CRuntimeClass classCObject;//virtual void SayHello() { cout << "这里是CObject类 /n"; }};class CCmdTarget : public CObject{/*DECLARE_DYNAMIC(CCmdTarget)*/public:DECLARE_MESSAGE_MAP()public:CCmdTarget::CCmdTarget() { }CCmdTarget::~CCmdTarget() { }};typedef void (CCmdTarget::*AFX_PMSG)(void);struct AFX_MSGMAP_ENTRY{UINT nMessage;UINT nCode;UINT nID;UINT nLastID;UINT nSig;AFX_PMSG pfn;};class CWinThread : public CCmdTarget{/*DECLARE_DYNAMIC(CWinThread)*/public:CWinThread::CWinThread() { }CWinThread::~CWinThread() { }virtual BOOL InitInstance() { cout << "CWinThread::InitInstance() /n"; return TRUE; }virtual int Run() { cout << "CWinThread::Run() /n"; return 1; }};class CWnd;class CWinApp : public CWinThread{/*DECLARE_DYNAMIC(CWinApp)*/public:DECLARE_MESSAGE_MAP()public:CWinApp* m_pCurrentWinApp;CWnd* m_pMainWnd;public:CWinApp::CWinApp() { m_pCurrentWinApp = this; }CWinApp::~CWinApp() { }virtual BOOL InitApplication() { cout << "CWinApp::InitApplication() /n"; return TRUE; }virtual BOOL InitInstance() { cout << "CWinApp::InitInstance() /n"; return TRUE; }virtual int Run() { cout << "CWinApp::Run() /n"; return CWinThread::Run(); }};typedef void (CWinApp::*AFX_PMSGW)(void);class CDocument : public CCmdTarget{/*DECLARE_DYNAMIC(CDocument)*/public:DECLARE_MESSAGE_MAP()public:CDocument::CDocument() { }CDocument::~CDocument() { }};class CWnd : public CCmdTarget{/*DECLARE_DYNCREATE(CWnd)*/public:DECLARE_MESSAGE_MAP()public:CWnd::CWnd() { /*cout << "CWnd Constructor /n";*/ }CWnd::~CWnd() { }virtual BOOL Create();BOOL CreateEx();virtual BOOL PreCreateWindow();//void SayHello() { cout << "这里是CWnd类 /n"; }};class CFrameWnd : public CWnd{/*DECLARE_DYNCREATE(CFrameWnd)*/public:DECLARE_MESSAGE_MAP()public:CFrameWnd::CFrameWnd() { /*cout << "CFrameWnd Constructor /n";*/ }CFrameWnd::~CFrameWnd() { }virtual BOOL Create();virtual BOOL PreCreateWindow();//void SayHello() { cout << "这里是CFrameWnd类 /n"; }};class CView : public CWnd{/*DECLARE_DYNAMIC(CView)*/public:DECLARE_MESSAGE_MAP()public:CView::CView() { }CView::~CView() { }};//GLOBAL FUNCCWinApp* AfxGetApp();//-------------------------------------------------------------------// MY.H//-------------------------------------------------------------------#include <iostream>#include "MFC.h"class CMyWinApp : public CWinApp{public:DECLARE_MESSAGE_MAP()public:CMyWinApp::CMyWinApp() { }CMyWinApp::~CMyWinApp() { }virtual BOOL InitInstance();};class CMyFrameWnd : public CFrameWnd{/*DECLARE_DYNCREATE(CMyFrameWnd)*/public:DECLARE_MESSAGE_MAP()public:CMyFrameWnd::CMyFrameWnd();CMyFrameWnd::~CMyFrameWnd() { }//void sayHello() { cout << "这里是CMyFrameWnd类 /n"; }};class CMyDoc : public CDocument{/*DECLARE_DYNCREATE(CMyDoc)*/public:DECLARE_MESSAGE_MAP()public:CMyDoc::CMyDoc() { /*cout << "CMyDoc constructor /n";*/}CMyDoc::~CMyDoc() { }//void sayHello() { cout << "这里是CMyDoc类 /n"; }};class CMyView : public CView{/*DECLARE_DYNCREATE(CMyView)*/public:DECLARE_MESSAGE_MAP()public:CMyView::CMyView() { /*cout << "CMyView constructor /n";*/ }CMyView::~CMyView() { }//void sayHello() { cout << "这里是CMyView类 /n"; }};//global function//void AfxprintAllClasses();//-------------------------------------------------------------------// AFXMSG_.H//-------------------------------------------------------------------enum AfxSig_end{AfxSig_end = 0,AfxSig_vv,};#define ON_COMMAND(id, memberFxn) /{ WM_COMMAND, 0, (WORD)id, (WORD)id, AfxSig_vv, (AFX_PMSG)memberFxn },//-------------------------------------------------------------------// MFC.CPP//-------------------------------------------------------------------#include "my.h"extern CMyWinApp theApp;//static char szCObject[] = "CObject";//struct CRuntimeClass CObject::classCObject = { szCObject, sizeof(CObject),65535,NULL, NULL, NULL};//static AFX_CLASSINIT _init_CObject(&CObject::classCObject);////CRuntimeClass* CRuntimeClass::pFirstClass = NULL;////AFX_CLASSINIT::AFX_CLASSINIT(CRuntimeClass* pNewClass)//{//pNewClass->m_pNextClass = CRuntimeClass::pFirstClass;//CRuntimeClass::pFirstClass = pNewClass;//}////CObject* CRuntimeClass::CreateObject()//{//if (m_pfnCreateObject == NULL)//{//TRACE1("错误：试图创建的对象不存在：%hs./n",m_lpszClassName);//return NULL;//}//CObject* pObject = NULL;//pObject = (*m_pfnCreateObject)();//return pObject;//}////CRuntimeClass* PASCAL CRuntimeClass::Load()//{//char szClassName[64];//CRuntimeClass* pClass;//cout << " 输入一个类名" ;//cin >> szClassName;//for(pClass = pFirstClass;pClass!=NULL;pClass=pClass->m_pNextClass)//{//if (strcmp(szClassName, pClass->m_lpszClassName)==0)//return pClass;//}//TRACE1("错误：没有找到匹配的类：%s /n",szClassName);//return NULL;//}////CRuntimeClass* CObject::GetRuntimeClass()const//{//return &CObject::classCObject;//}////BOOL CObject::IsKindOf(const CRuntimeClass* pClass) const//{//CRuntimeClass* pClassThis = GetRuntimeClass();//while (pClassThis!=NULL)//{//if (pClassThis==pClass)//{//return TRUE;//}//pClassThis = pClassThis->m_pBaseClass;//}//return FALSE;//}BOOL CWnd::Create(){cout << "CWnd::Create() /n";return TRUE;}BOOL CWnd::CreateEx(){cout << "CWnd::CreateEx() /n";PreCreateWindow();return TRUE;}BOOL CWnd::PreCreateWindow(){cout << "CWnd::PreCreateWindow() /n";return TRUE;}BOOL CFrameWnd::Create(){cout << "CFrameWnd::Create() /n";CreateEx();return TRUE;}BOOL CFrameWnd::PreCreateWindow(){cout << "CFrameWnd::PreCreateWindow() /n";return TRUE;}CWinApp* AfxGetApp(){return theApp.m_pCurrentWinApp;}//IMPLEMENT_DYNMIC(CCmdTarget, CObject)//IMPLEMENT_DYNMIC(CWinThread, CCmdTarget)//IMPLEMENT_DYNMIC(CWinApp, CWinThread)//IMPLEMENT_DYNMIC(CDocument, CCmdTarget)//IMPLEMENT_DYNCREATE(CWnd, CCmdTarget)//IMPLEMENT_DYNMIC(CView, CWnd)//IMPLEMENT_DYNCREATE(CFrameWnd, CWnd)AFX_MSGMAP* CCmdTarget::GetMessageMap() const{return &CCmdTarget::messageMap;}AFX_MSGMAP CCmdTarget::messageMap ={NULL,&CCmdTarget::_messageEntries[0]};AFX_MSGMAP_ENTRY CCmdTarget::_messageEntries[] ={{0, 0, CCmdTargetid, 0, AfxSig_end, 0 }};BEGIN_MESSAGE_MAP(CWnd, CCmdTarget)ON_COMMAND(CWndid, 0)END_MESSAGE_MAP()BEGIN_MESSAGE_MAP(CFrameWnd, CWnd)ON_COMMAND(CFrameWndid, 0)END_MESSAGE_MAP()BEGIN_MESSAGE_MAP(CDocument, CCmdTarget)ON_COMMAND(CDocumentid, 0)END_MESSAGE_MAP()BEGIN_MESSAGE_MAP(CView, CWnd)ON_COMMAND(CViewid, 0)END_MESSAGE_MAP()BEGIN_MESSAGE_MAP(CWinApp, CCmdTarget)ON_COMMAND(CWinAppid, 0)END_MESSAGE_MAP()//-------------------------------------------------------------------// MY.CPP//-------------------------------------------------------------------#include "MY.h"CMyWinApp theApp;BOOL CMyWinApp::InitInstance(){cout << "CMyWinApp::InitInstance() /n";m_pMainWnd = new CMyFrameWnd;return TRUE;}CMyFrameWnd::CMyFrameWnd(){//cout << "CMyDoc constructor /n"; Create();}//IMPLEMENT_DYNCREATE(CMyFrameWnd,CFrameWnd)//IMPLEMENT_DYNCREATE(CMyDoc,CDocument)//IMPLEMENT_DYNCREATE(CMyView,CView)BEGIN_MESSAGE_MAP(CMyWinApp, CWinApp)ON_COMMAND(CMyWinAppid, 0)END_MESSAGE_MAP()BEGIN_MESSAGE_MAP(CMyFrameWnd, CFrameWnd)ON_COMMAND(CMyFrameWndid, 0)END_MESSAGE_MAP()BEGIN_MESSAGE_MAP(CMyView, CView)ON_COMMAND(CMyViewid, 0)END_MESSAGE_MAP()BEGIN_MESSAGE_MAP(CMyDoc, CDocument)ON_COMMAND(CMyDocid, 0)END_MESSAGE_MAP()void printlpEntries(AFX_MSGMAP_ENTRY* lpEntrt){struct {int classid;char* classname;} classinfo[] = {CCmdTargetid,"CCmdTarget",CWinThreadid," CWinThread",CWinAppid, "CWinApp",CMyWinAppid, "CMyWinApp",CWndid, "CWnd",CFrameWndid, "CFrameWnd",CMyFrameWndid, "CMyFrameWnd",CViewid, "CView",CMyViewid,"CMyView",CDocumentid, "CDocument",CMyDocid, "CMyDoc",0,""};for (int i = 0; classinfo[i].classid!=0; i++){if (classinfo[i].classid == lpEntrt->nID){cout << lpEntrt->nID << "";cout << classinfo[i].classname << endl;break;}}}void MsgMapPrinting(AFX_MSGMAP* pMessageMap){for (; pMessageMap!=NULL; pMessageMap=pMessageMap->pBaseMessageMap){AFX_MSGMAP_ENTRY* lpEntry = pMessageMap->lpEntries;printlpEntries(lpEntry);}}//void PrintAllClasses()//{//CRuntimeClass* pClass;//for (pClass = CRuntimeClass::pFirstClass; pClass!=NULL; pClass = pClass->m_pNextClass)//{//cout<<pClass->m_lpszClassName<<endl;//cout<<pClass->m_nObjectSize<<endl;//cout<<pClass->m_wSchema<<endl;//}//}//-------------------------------------------------------------------// main//-------------------------------------------------------------------void main(){CWinApp* pApp = AfxGetApp();pApp->InitApplication();pApp->InitInstance();pApp->Run();CMyDoc* pMyDoc = new CMyDoc;CMyView* pMyView = new CMyView;CMyFrameWnd* pMyFrameWnd = (CMyFrameWnd*)pApp->m_pMainWnd;// output Message Map constructionAFX_MSGMAP* pMessageMap = pMyView->GetMessageMap();cout << endl << "CMyView Message Map : " << endl;MsgMapPrinting(pMessageMap);pMessageMap = pMyDoc->GetMessageMap();cout << endl << "CMyDoc Message Map : " << endl;MsgMapPrinting(pMessageMap);pMessageMap = pMyFrameWnd->GetMessageMap();cout << endl << "CMyFrameWnd Message Map : " << endl;MsgMapPrinting(pMessageMap);pMessageMap = pApp->GetMessageMap();cout << endl << "CMyWinApp Message Map : " << endl;MsgMapPrinting(pMessageMap);//CRuntimeClass* pClassRef;//CObject* pOb;//while (1)//{//if ((pClassRef = CRuntimeClass::Load())== NULL)//{//break;//}//pOb = pClassRef->CreateObject();//if (pOb!=NULL)//{//pOb->SayHello();//}//}} 

 

CWinApp::InitApplication()

CMyWinApp::InitInstance()

CFrameWnd::Create()

CWnd::CreateEx()

CFrameWnd::PreCreateWindow()

CWinApp::Run()

CWinThread::Run()

CMyView Message Map :

1221    CMyView

122     CView

12      CWnd

1       CCmdTarget

CMyDoc Message Map :

131     CMyDoc

13      CDocument

1       CCmdTarget

CMyFrameWnd Message Map :

1211    CMyFrameWnd

121     CFrameWnd

12      CWnd

1       CCmdTarget

CMyWinApp Message Map :

1111    CMyWinApp

111     CWinApp

1       CCmdTarget

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