• 数字时钟


    //windows.h文件中包含应用程序中所需的数据类型和数据结构的定义
    #include <windows.h>
    #include <stdlib.h>
    #include <time.h>
    LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);//窗口函数说明
    //---------以下初始化窗口类--------------
    int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInst,LPSTR lpszCmdLine,int nCmdShow)
    {
        HWND hwnd;
        MSG Msg;
        WNDCLASS wndclass;
        char lpszClassName[] = "窗口";     //窗口类名
        char lpszTitle[] = "My_Windows";    //窗口标题名
    
        //窗口类的定义
        wndclass.style = CS_HREDRAW | CS_VREDRAW;                  //窗口类型为默认类型
        wndclass.lpfnWndProc = WndProc;      //窗口处理函数为WndProc
        wndclass.cbClsExtra = 0;             //窗口类无扩展
        wndclass.cbWndExtra = 0;             //窗口实例无扩展
        wndclass.hInstance = hInstance;     //当前实例句柄
    
        wndclass.hIcon = LoadIcon(NULL,IDI_APPLICATION);//窗口的最小化图标为默认图标
        wndclass.hCursor = LoadCursor( NULL, IDC_ARROW); //窗口 采用箭头光标
        wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); //窗口 背景为 白色
        wndclass.lpszMenuName = NULL ; //窗口 中无菜单
        wndclass.lpszClassName = lpszClassName; //窗口类名为“窗口示例”
    //-----------以下进行窗口类的注册
        if (!RegisterClass(&wndclass))//如果注册失败则发出警吿声音
        {
            MessageBeep (0);
            return FALSE;
        }
    
    //创建窗口
        hwnd = CreateWindow(
                            lpszClassName, //窗口类名
                            lpszTitle,      //窗口实例的标题名
                            WS_OVERLAPPEDWINDOW, //窗口 的风格
                            CW_USEDEFAULT,
                            CW_USEDEFAULT,  //窗口左上角坐标为默认值
                            CW_USEDEFAULT,
                            CW_USEDEFAULT,  //窗口的髙和宽为默认值
                            NULL,           //此窗口无父窗口
                            NULL,           //此窗口无主菜单
                            hInstance,      //创建此窗口应用程序的当前句柄
                            NULL            //不使用该值
                            );
    
    
    
        ShowWindow( hwnd, nCmdShow);        //显示窗口
        UpdateWindow(hwnd);                 //绘制用户区
        while( GetMessage(&Msg, NULL, 0, 0)) //消息循环
        {
            TranslateMessage(&Msg);
            DispatchMessage(&Msg);
        }
        return Msg.wParam;                  //程序终止时将信息返回系统
    }
    #define LR (rect.left+rect.right)
    #define TD (rect.bottom+rect.top)
    #define x_eps (LR*4/18/8)
    #define y_eps (TD*3/5/8)
    void CreateNumbers(HDC hDC, RECT rect, int number, int pos)
    {
        int st_x, st_y;
        if (pos == 1)
            st_x =  LR/18+x_eps, st_y = TD/5+y_eps;
        else if (pos == 2)
            st_x =  LR*5/18+x_eps, st_y = TD/5+y_eps;
        else if (pos == 3)
            st_x =  LR*9/18+x_eps, st_y = TD/5+y_eps;
        else if (pos == 4)
            st_x =  LR*13/18+x_eps, st_y = TD/5+y_eps;
        switch(number)
        {
        case 0:
            MoveToEx(hDC, st_x, st_y, NULL);//1
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y);//2
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5-2*y_eps);//6
            LineTo(hDC, st_x, st_y+TD*3/5-2*y_eps);//5
            LineTo(hDC, st_x, st_y);//1
            break;
        case 1:
            MoveToEx(hDC, st_x+LR*4/18-2*x_eps, st_y, NULL);//2
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5-2*y_eps);//6
            break;
        case 2:
            MoveToEx(hDC, st_x, st_y, NULL);//1
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y);//2
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5/2-y_eps);//4
            LineTo(hDC, st_x, st_y+TD*3/5/2-y_eps);//3
            LineTo(hDC, st_x, st_y+TD*3/5-2*y_eps);//5
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5-2*y_eps);//6
            break;
        case 3:
            MoveToEx(hDC, st_x, st_y, NULL);
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y);
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5/2-y_eps);
            LineTo(hDC, st_x, st_y+TD*3/5/2-y_eps);
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5/2-y_eps);
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5-2*y_eps);
            LineTo(hDC, st_x, st_y+TD*3/5-2*y_eps);
            break;
        case 4:
            MoveToEx(hDC, st_x, st_y, NULL);
            LineTo(hDC, st_x, st_y+TD*3/5/2-y_eps);
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5/2-y_eps);
            MoveToEx(hDC, st_x+LR*4/18-2*x_eps, st_y, NULL);
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5-2*y_eps);
            break;
        case 5:
            MoveToEx(hDC, st_x+LR*4/18-2*x_eps, st_y, NULL);
            LineTo(hDC, st_x, st_y);
            LineTo(hDC, st_x, st_y+TD*3/5/2-y_eps);
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5/2-y_eps);
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5-2*y_eps);
            LineTo(hDC, st_x, st_y+TD*3/5-2*y_eps);
            break;
        case 6:
            MoveToEx(hDC, st_x+LR*4/18-2*x_eps, st_y, NULL);
            LineTo(hDC, st_x, st_y);
            LineTo(hDC, st_x, st_y+TD*3/5-2*y_eps);
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5-2*y_eps);
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5/2-y_eps);
            LineTo(hDC, st_x, st_y+TD*3/5/2-y_eps);
            break;
        case 7:
            MoveToEx(hDC, st_x, st_y, NULL);
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y);
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5-2*y_eps);
            break;
        case 8:
            MoveToEx(hDC, st_x, st_y, NULL);//1
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y);//2
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5-2*y_eps);//6
            LineTo(hDC, st_x, st_y+TD*3/5-2*y_eps);//5
            LineTo(hDC, st_x, st_y);//1
            MoveToEx(hDC, st_x, st_y+TD*3/5/2-y_eps, NULL);//3
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5/2-y_eps);//4
            break;
        case 9:
            MoveToEx(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5/2-y_eps, NULL);//4
            LineTo(hDC, st_x, st_y+TD*3/5/2-y_eps);//3
            LineTo(hDC, st_x, st_y);//1
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y);//2
            LineTo(hDC, st_x+LR*4/18-2*x_eps, st_y+TD*3/5-2*y_eps);//6
            break;
        };
    
    }
    
    
    //窗口函数
    LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
    {
        HDC hDC;
        HBRUSH hBrush;
        RECT rect;
        HPEN hPen;
        PAINTSTRUCT PtStr;
        static int m = 0, s = 0;
        COLORREF color[7] = {RGB(255,0,0), RGB(255,165,0), RGB(255,255,0), RGB(0,255,0), RGB(0,255,255), RGB(0,0,255), RGB(139,0,255)};
        switch(message)
        {
        case WM_PAINT:
            GetClientRect(hWnd, &rect);
            hDC = BeginPaint(hWnd, &PtStr);
            hPen = CreatePen(PS_SOLID, 10, color[6]);
            SelectObject(hDC, hPen);
            Rectangle(hDC, LR/18, TD/5, LR*17/18, TD*4/5);
            Rectangle(hDC, LR/18, TD/5, LR*9/18, TD*4/5);
            CreateNumbers(hDC, rect, m / 10, 1);
            CreateNumbers(hDC, rect, m % 10, 2);
            CreateNumbers(hDC, rect, s / 10, 3);
            CreateNumbers(hDC, rect, s % 10, 4);
    
            Sleep(1000);
            ++s;
            if (s == 60)
                s = 0, ++m;
            InvalidateRect(hWnd, NULL, 1);
    
    
            DeleteObject(hBrush);
            EndPaint(hWnd, &PtStr);
    
            return 0;
    
        case WM_DESTROY:
            PostQuitMessage(0);                 //调用 PostQuitMessage 发出 WM_QUIT 消息
            return 0;
        default:
            return DefWindowProc(hWnd, message, wParam, lParam); //默认时采用系统消息默认处理函数
    
        }
    
    }
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  • 原文地址:https://www.cnblogs.com/Vikyanite/p/12453841.html
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