自己简单封装的一个CDialog类实例

#include <windows.h>class CDialog{public: //一条消息所包含的信息 struct MAP {  UINT Msg;  bool (*pf)(HWND hwndDlg,UINT uMsg,WPARAM wParam,LPARAM lParam);  int len;  MAP *pNext; };public: WORD m_wRes;//Dialog资源的ID //头、尾指针，用来操作消息列表 static MAP *m_pHead; MAP *m_pEnd;public: bool Show(HINSTANCE,HWND); void AddMsg(bool (*fp)(HWND hwndDlg,UINT uMsg,WPARAM wParam,LPARAM lParam),UINT); static bool OnClose(HWND hwndDlg,UINT uMsg,WPARAM wParam,LPARAM lParam); static bool OnInit(HWND hwndDlg,UINT uMsg,WPARAM wParam,LPARAM lParam); CDialog();private: static INT_PTR CALLBACK DialogProc(HWND hwndDlg,UINT uMsg,WPARAM wParam,LPARAM lParam); void InitMap();};int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow);

#include "Dialog.h"CDialog* pThis;//保存基类指针CDialog::MAP* CDialog::m_pHead = NULL;//窗口过程函数INT_PTR CDialog::DialogProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam){ //遍历消息列表以查找是否有相应的响应函数 CDialog::MAP* pTemp = m_pHead; for(int i = 1;i <= m_pHead->len;++i) {  if(uMsg == pTemp->Msg)  {   pTemp->pf(hwndDlg,uMsg,wParam,lParam);   return FALSE;  }  pTemp = pTemp->pNext; } return FALSE;}//创建消息列表void CDialog::InitMap(){ m_pHead = new MAP; m_pHead->len = 2; m_pHead->Msg = WM_CLOSE; m_pHead->pf = OnClose; MAP *pNew = new MAP; pNew->Msg = WM_INITDIALOG; pNew->pf = OnInit; pNew->pNext = NULL; m_pHead->pNext = pNew; m_pEnd = pNew;}//消息响应函数bool CDialog::OnClose(HWND hwndDlg,UINT uMsg,WPARAM wParam,LPARAM lParam){ EndDialog(hwndDlg,0); return true;}CDialog::CDialog(){ InitMap();}//程序入口函数int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow){ pThis->Show(hInstance,NULL); return 0;}//显示Dialogbool CDialog::Show(HINSTANCE hIns,HWND hParent){ DialogBox(hIns,MAKEINTRESOURCE(m_wRes),hParent,DialogProc); return true;}//由子类重写此函数以在对话框初始化时进行一些操作bool CDialog::OnInit(HWND hwndDlg,UINT uMsg,WPARAM wParam,LPARAM lParam){ return true;}//向消息列表中增加消息void CDialog::AddMsg(bool (*fp)(HWND hwndDlg,UINT uMsg,WPARAM wParam,LPARAM lParam),UINT uMsg){ MAP *pNew = new MAP; pNew->Msg = uMsg; pNew->pf = fp; pNew->pNext = NULL; m_pEnd->pNext = pNew; m_pEnd = pNew; ++m_pHead->len;}

#include "MyDlg.h"#include "resource.h"//定义一个指向CDialog的指针并在下面的构造函数中赋值为thisextern CDialog* pThis;MyDlg App;MyDlg::MyDlg(){ m_wRes = IDD_DIALOG1; pThis = this; AddMsg(OnCommand,WM_COMMAND);}//WM_COMMAND消息响应函数bool MyDlg::OnCommand(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam){ MessageBox(hwndDlg,"","",0); return true;}//WM_INITDIALOG消息响应函数bool MyDlg::OnInit(HWND hwndDlg,UINT uMsg,WPARAM wParam,LPARAM lParam){ MessageBox(hwndDlg,"","",0); return true;}