中南大学数学院大三年级面向对象实验报告

面向对象程序设计作业C++做一个窗口小程序，用纯API的方式：#include <windows.h>LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nShowCmd){WNDCLASS wndclass;HWND hwnd;MSG msg;wndclass.style = CS_HREDRAW|CS_VREDRAW;wndclass.lpfnWndProc = WndProc;wndclass.cbClsExtra = 0;wndclass.cbWndExtra = 0;wndclass.hInstance = hInstance;wndclass.hIcon = LoadIcon(NULL,IDI_APPLICATION);wndclass.hCursor = LoadCursor(NULL,IDC_ARROW);wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); wndclass.lpszMenuName = NULL;wndclass.lpszClassName = L"Test";if(!RegisterClass(&wndclass)) return FALSE;hwnd = CreateWindow(L"Test",L"Test",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);ShowWindow(hwnd,nShowCmd);UpdateWindow(hwnd);while(GetMessage(&msg,NULL,0,0)){TranslateMessage(&msg);DispatchMessage(&msg);}return msg.wParam;LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam) {switch(message){case WM_PAINT:HDC hdc;PAINTSTRUCT ps;hdc = BeginPaint(hwnd,&ps);TextOut(hdc,20,60,L"love you",8);EndPaint(hwnd,&ps);return 0;case WM_DESTROY:PostQuitMessage(0);return 0;case WM_MBUTTONDOWN:MessageBox(hwnd,L"鼠标中键被按下!",L"mouseEvent",MB_OK);break;case WM_LBUTTONDOWN:MessageBox(hwnd,L"鼠标左键被按下!",L"mouseEvent",MB_OK);break;case WM_RBUTTONDOWN:MessageBox(hwnd,L"鼠标右键被按下!",L"mouseEvent",MB_OK);break;}return DefWindowProc(hwnd,message,wParam,lParam);}一个窗口捕捉的程序代码用的是VC编译器：为了方便，屏幕显示在"无标题.txt - 记事本"窗口里，所以你得新建一个文本文件，并取名为"无标题",然后打开这个记事，并运行下面这个程序。

#include<windows.h>int main(){HWND TextWnd=FindWindow(NULL,"无标题.txt - 记事本");HDC TextDC=GetDC(TextWnd);HWND DeskWnd=::GetDesktopWindow();RECT DeskRC;::GetClientRect(DeskWnd,&DeskRC);HDC DeskDC=GetDC(DeskWnd);HBITMAP DeskBmp=::CreateCompatibleBitmap(DeskDC,DeskRC.right,DeskRC.bottom); HDC memDC;memDC=::CreateCompatibleDC(DeskDC);SelectObject(memDC,DeskBmp);while(1){StretchBlt(memDC,0,0,DeskRC.right,DeskRC.bottom,DeskDC,0,0,DeskRC.right,DeskR C.bottom,SRCCOPY);RECT TextRC;GetClientRect(TextWnd,&TextRC);::StretchBlt(TextDC,0,0,TextRC.right,TextRC.bottom,memDC,0,0,DeskRC.right,DeskRC.bottom,SRCCOPY);Sleep(300);}return 0;}#include<windows.h>LRESULT CALLBACK MyWndproc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lparam) {if(message == WM_DESTROY){::PostQuitMessage(0);return 0;}if(message == WM_PAINT){PAINTSTRUCT ps;HDC hdc = ::BeginPaint(hWnd,&ps);::EndPaint(hWnd,&ps);//RECT rectClient;//GetClient(hWnd,&rectClient); ;;;;(InvalidateRect)//::ValidateRect(hWnd,&rectClient);return 0;}return ::DefWindowProc(hWnd,message,wParam, lparam);}int __stdcall WinMain(HINSTANCE hInstance,HINSTANCE hPrevInst,LPSTR lpCmdLine,int nShowCmd){WNDCLASSEX wndcls;wndcls.cbClsExtra = 0;wndcls.cbSize = sizeof(wndcls);wndcls.cbWndExtra = 0;wndcls.hbrBackground = ::CreateSolidBrush(RGB(0,255,0));wndcls.hCursor = ::LoadCursor(NULL,IDC_CROSS);wndcls.hIcon = ::LoadIcon(NULL,IDI_QUESTION);wndcls.hIconSm = NULL;wndcls.hInstance = hInstance;wndcls.lpszMenuName=NULL; //wndcls中这个成员没有赋值wndcls.lpfnWndProc = MyWndproc; //这里要写自己定义的过程函数名称wndcls.lpszClassName = TEXT("MyFirstClass");//(WideCharToMUltiByte)//W char//wndcls.IpszClassName = TEXT("MyFirstClass");wndcls.style = CS_HREDRAW | CS_VREDRAW;::RegisterClassEx(&wndcls);HWND hWnd= ::CreateWindow(TEXT("MyFirstClass"),TEXT("MyCaption"),WS_OVERLAPPEDWINDOW,0,0 ,300,300,NULL,NULL,hInstance,NULL);if(!hWnd){return(-1);}::ShowWindow(hWnd,nShowCmd);::UpdateWindow(hWnd);MSG msg;while(::GetMessage(&msg,NULL,NULL,NULL)){::TranslateMessage(&msg);//转化键盘消息::DispatchMessage(&msg);}return msg.wParam; //逗号改成"."，因为wParan是MSG的一个成员//return 0;}// 1.cpp : Defines the class behaviors for the application.//#include "stdafx.h"#include "1.h"#include "MainFrm.h"#include "ChildFrm.h"#include "1Doc.h"#include "1View.h"#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = __FILE__;#endif///////////////////////////////////////////////////////////////////////////// // CMy1AppBEGIN_MESSAGE_MAP(CMy1App, CWinApp)//{{AFX_MSG_MAP(CMy1App)ON_COMMAND(ID_APP_ABOUT, OnAppAbout)// NOTE - the ClassWizard will add and remove mapping macros here.// DO NOT EDIT what you see in these blocks of generated code!//}}AFX_MSG_MAP// Standard file based document commandsON_COMMAND(ID_FILE_NEW, CWinApp::OnFileNew)ON_COMMAND(ID_FILE_OPEN, CWinApp::OnFileOpen)// Standard print setup commandON_COMMAND(ID_FILE_PRINT_SETUP, CWinApp::OnFilePrintSetup)END_MESSAGE_MAP()///////////////////////////////////////////////////////////////////////////// // CMy1App constructionCMy1App::CMy1App(){// TODO: add construction code here,// Place all significant initialization in InitInstance}///////////////////////////////////////////////////////////////////////////// // The one and only CMy1App objectCMy1App theApp;///////////////////////////////////////////////////////////////////////////// // CMy1App initializationBOOL CMy1App::InitInstance(){AfxEnableControlContainer();// Standard initialization// If you are not using these features and wish to reduce the size// of your final executable, you should remove from the following// the specific initialization routines you do not need.#ifdef _AFXDLLEnable3dControls(); // Call this when using MFC in a shared DLL#elseEnable3dControlsStatic(); // Call this when linking to MFC statically#endif// Change the registry key under which our settings are stored.// TODO: You should modify this string to be something appropriate// such as the name of your company or organization.SetRegistryKey(_T("Local AppWizard-Generated Applications"));LoadStdProfileSettings(); // Load standard INI file options (including MRU) // Register the application's document templates. Document templates// serve as the connection between documents, frame windows and views.CMultiDocTemplate* pDocTemplate;pDocTemplate = new CMultiDocTemplate(IDR_MY1TYPE,RUNTIME_CLASS(CMy1Doc),RUNTIME_CLASS(CChildFrame), // custom MDI child frameRUNTIME_CLASS(CMy1View));AddDocTemplate(pDocTemplate);// create main MDI Frame windowCMainFrame* pMainFrame = new CMainFrame;if (!pMainFrame->LoadFrame(IDR_MAINFRAME))return FALSE;m_pMainWnd = pMainFrame;// Parse command line for standard shell commands, DDE, file open CCommandLineInfo cmdInfo;ParseCommandLine(cmdInfo);// Dispatch commands specified on the command lineif (!ProcessShellCommand(cmdInfo))return FALSE;// The main window has been initialized, so show and update it.pMainFrame->ShowWindow(m_nCmdShow);pMainFrame->UpdateWindow();return TRUE;}/////////////////////////////////////////////////////////////////////////////// CAboutDlg dialog used for App Aboutclass CAboutDlg : public CDialog{public:CAboutDlg();// Dialog Data//{{AFX_DATA(CAboutDlg)enum { IDD = IDD_ABOUTBOX };//}}AFX_DATA// ClassWizard generated virtual function overrides//{{AFX_VIRTUAL(CAboutDlg)protected:virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support //}}AFX_VIRTUAL// Implementationprotected://{{AFX_MSG(CAboutDlg)// No message handlers//}}AFX_MSGDECLARE_MESSAGE_MAP()};CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) {//{{AFX_DATA_INIT(CAboutDlg)//}}AFX_DATA_INIT}void CAboutDlg::DoDataExchange(CDataExchange* pDX) {CDialog::DoDataExchange(pDX);//{{AFX_DATA_MAP(CAboutDlg)//}}AFX_DATA_MAP}BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)//{{AFX_MSG_MAP(CAboutDlg)// No message handlers//}}AFX_MSG_MAPEND_MESSAGE_MAP()// App command to run the dialogvoid CMy1App::OnAppAbout(){CAboutDlg aboutDlg;aboutDlg.DoModal();}///////////////////////////////////////////////////////////////////////////// // CMy1App message handlers// MainFrm.cpp : implementation of the CMainFrame class#include "stdafx.h"#include "1.h"#include "MainFrm.h"#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = __FILE__;#endif///////////////////////////////////////////////////////////////////////////// // CMainFrameIMPLEMENT_DYNAMIC(CMainFrame, CMDIFrameWnd)BEGIN_MESSAGE_MAP(CMainFrame, CMDIFrameWnd)//{{AFX_MSG_MAP(CMainFrame)// NOTE - the ClassWizard will add and remove mapping macros here.// DO NOT EDIT what you see in these blocks of generated code !ON_WM_CREATE()//}}AFX_MSG_MAPEND_MESSAGE_MAP()static UINT indicators[] ={ID_SEPARATOR, // status line indicatorID_INDICATOR_CAPS,ID_INDICATOR_NUM,ID_INDICATOR_SCRL,};/////////////////////////////////////////////////////////////////////////////// CMainFrame construction/destructionCMainFrame::CMainFrame(){// TODO: add member initialization code here}CMainFrame::~CMainFrame(){}int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct){if (CMDIFrameWnd::OnCreate(lpCreateStruct) == -1)return -1;if (!m_wndToolBar.CreateEx(this, TBSTYLE_FLAT, WS_CHILD | WS_VISIBLE | CBRS_TOP| CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC) ||!m_wndToolBar.LoadToolBar(IDR_MAINFRAME)){TRACE0("Failed to create toolbar\n");return -1; // fail to create}if (!m_wndStatusBar.Create(this) ||!m_wndStatusBar.SetIndicators(indicators,sizeof(indicators)/sizeof(UINT))){TRACE0("Failed to create status bar\n");return -1; // fail to create}// TODO: Delete these three lines if you don't want the toolbar to // be dockablem_wndToolBar.EnableDocking(CBRS_ALIGN_ANY);EnableDocking(CBRS_ALIGN_ANY);DockControlBar(&m_wndToolBar);return 0;}BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs){if( !CMDIFrameWnd::PreCreateWindow(cs) )return FALSE;// TODO: Modify the Window class or styles here by modifying// the CREATESTRUCT csreturn TRUE;}CMainFrame///////////////////////////////////////////////////////////////////////////// // CMainFrame diagnostics#ifdef _DEBUGvoid CMainFrame::AssertValid() const{CMDIFrameWnd::AssertValid();}void CMainFrame::Dump(CDumpContext& dc) const{CMDIFrameWnd::Dump(dc);}#endif //_DEBUG///////////////////////////////////////////////////////////////////////////// // CMainFrame message handlers// stdafx.h : include file for standard system include files,// or project specific include files that are used frequently, but// are changed infrequently//#if !defined(AFX_STDAFX_H__F1BD735B_CB84_4E80_9CD2_F247808B4236__INCLUDED_)#define AFX_STDAFX_H__F1BD735B_CB84_4E80_9CD2_F247808B4236__INCLUDED_#if _MSC_VER > 1000#pragma once#endif // _MSC_VER > 1000#define VC_EXTRALEAN // Exclude rarely-used stuff from Windows headers#include <afxwin.h> // MFC core and standard components#include <afxext.h> // MFC extensions#include <afxdisp.h> // MFC Automation classes#include <afxdtctl.h> // MFC support for Internet Explorer 4 Common Controls#ifndef _AFX_NO_AFXCMN_SUPPORT#include <afxcmn.h> // MFC support for Windows Common Controls#endif // _AFX_NO_AFXCMN_SUPPORT//{{AFX_INSERT_LOCATION}}// Microsoft Visual C++ will insert additional declarations immediately before the previous line.#endif// !defined(AFX_STDAFX_H__F1BD735B_CB84_4E80_9CD2_F247808B4236__INCLUDED_)Draw.cpp代码:// Draw.cpp : 实现文件#include "stdafx.h"#include "LineDemo.h"#include "Draw.h"IMPLEMENT_SERIAL(CDraw, CObject, 2)// CDrawCDraw::CDraw(): m_flag(0), m_firpt(0){}CDraw::~CDraw(){}// CDraw 成员函数CDraw::CDraw(int m_flag, CPoint m_firpt, CPoint m_endpt) {this->m_flag=m_flag;this->m_firpt=m_firpt;this->m_endpt=m_endpt;}void CDraw::Draw(CDC* pDC){switch(m_flag){case 1:pDC->MoveTo (m_firpt);pDC->LineTo (m_endpt);break;case 2:pDC->Rectangle(m_firpt.x,m_firpt.y,m_endpt.x,m_endpt.y);break;case 3:pDC->Ellipse (m_firpt.x,m_firpt.y,m_endpt.x,m_endpt.y);break;default:break;}}void CDraw::Serialize(CArchive& ar){if (ar.IsStoring()){ar<<m_flag;ar<<m_firpt.x<<m_firpt.y;ar<<m_endpt.x<<m_endpt.y;}else{ar>>m_flag;ar>>m_firpt.x>>m_firpt.y;ar>>m_endpt.x>>m_endpt.y;}}。