VisualC面向对象与可视化程序设计.doc

1、 VisualC+面向对象与可视化程序设计实验一：绘图与文本一、实验目的1. 掌握 Windows 应用程序的基本结构；2. 使用 API 函数建立窗口、消息循环，编制窗口函数；3. 使用 API 函数在用户区绘图、输出文本，理解Windows 的图形设备接口。二、实验内容实现给定的绘图与文本操作。三、程序代码#include#includeBOOLEAN InitWindowClass(HINSTANCE hInstance,int nCmdShow); LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);intAPIENTRY _tWi

2、nMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPTSTRlpCmdLine,intnCmdShow)MSG msg;if(!InitWindowClass(hInstance,nCmdShow)MessageBox(NULL,L窗口创建失败！ ,_T(创建窗口 ),NULL); return 1;while (GetMessage(&msg, NULL, 0, 0)TranslateMessage(&msg);DispatchMessage(&msg);return (int) msg.wParam;LRESULTCALLBACKWndP

3、roc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)HDC hDC;PAINTSTRUCT PtStr;HBRUSH hBrush;HPEN hPen;static long nXChar,nCaps,nYChar;short x,y;TEXTMETRIC tm;short LnCount=4;LPCWSTR poem4=L故人西辞黄鹤楼,L烟花三月下扬州,L孤帆远影碧空尽,L唯见长江天际流;switch(message)case WM_CREATE:hDC=GetDC(hWnd);GetTextMetrics(hDC,&tm);

4、nXChar=tm.tmAveCharWidth;nYChar=tm.tmHeight+tm.tmExternalLeading+nXChar;ReleaseDC(hWnd,hDC);break;case WM_PAINT:hDC = BeginPaint(hWnd, &PtStr);SetMapMode(hDC,MM_ANISOTROPIC);hPen=CreatePen(PS_SOLID,2,RGB(255,0,0);hBrush=(HBRUSH)GetStockObject(GRAY_BRUSH);hBrush=CreateSolidBrush(RGB(255,255,0);Select

5、Object(hDC,hBrush);SelectObject(hDC,hPen);MoveToEx(hDC,100,100,NULL);LineTo(hDC,200,100);MoveToEx(hDC,100,100,NULL);LineTo(hDC,150,200);MoveToEx(hDC,200,100,NULL);LineTo(hDC,150,200);Arc(hDC,110,200,190,280,150,200,150,200);MoveToEx(hDC,150,280,NULL);LineTo(hDC,110,300);MoveToEx(hDC,150,280,NULL);Li

6、neTo(hDC,190,300);MoveToEx(hDC,110,300,NULL);LineTo(hDC,110,325);MoveToEx(hDC,190,300,NULL);LineTo(hDC,190,325);MoveToEx(hDC,110,325,NULL);LineTo(hDC,190,325);RoundRect(hDC,290,160,370,200,20,20);Pie(hDC,290,200,370,280,320,200,340,200);Rectangle(hDC,290,280,370,325);for(x=0;xLnCount;x+)for(y=0;y7;y

7、+)TextOut(hDC,nXChar-(x*4*nXChar)+600,nYChar+nYChar*y+70,poemx+y,1);EndPaint(hWnd,&PtStr);DeleteObject(hPen);DeleteObject(hBrush);break;case WM_DESTROY:PostQuitMessage(0);break;default:return DefWindowProc(hWnd, message, wParam, lParam); break;return 0;BOOLEAN InitWindowClass(HINSTANCE hInstance,int

8、 nCmdShow)WNDCLASSEX wcex;HWND hWnd;TCHAR szWindowClass=L实验 1;TCHAR szTitle=L2015326602033_周俊 _实验一 ;wcex.cbSize = sizeof(WNDCLASSEX);wcex.style= 0;wcex.lpfnWndProc= WndProc;wcex.cbClsExtra= 0;wcex.cbWndExtra= 0;wcex.hInstance= hInstance;wcex.hIcon= LoadIcon(hInstance, MAKEINTRESOURCE(IDI_APPLICATION

9、);wcex.hCursor= LoadCursor(NULL, IDC_ARROW);wcex.hbrBackground= (HBRUSH)GetStockObject(WHITE_BRUSH);wcex.lpszMenuName= NULL;wcex.lpszClassName= szWindowClass;wcex.hIconSm=LoadIcon(wcex.hInstance,MAKEINTRESOURCE(IDI_APPLICATION);if(!RegisterClassEx(&wcex)MessageBox(NULL,_T(窗口类注册失败！ ),_T( 窗口注册 ),NULL); return 1;hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT, CW_USEDEFAULT, NULL,NULL, hInstance, NULL);if (!hWnd)return FALSE;ShowWindow(hWnd, nCmdShow);Updat