www.pudn.com > myclock.rar > main.cpp
#include#include #include "resource.h" #include "main.h" //***************************** //程序设计：李继飞 //设计时间：2005年10月24日 //邮箱：dasecom@sina.com //***************************** int APIENTRY WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow) { char *szClassName = "MainClass"; WNDCLASSEX wndclass; wndclass.cbSize = sizeof(wndclass); wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; wndclass.lpfnWndProc = WndProc; wndclass.cbClsExtra = 0; wndclass.cbWndExtra = 0; wndclass.hIcon = LoadIcon(hInstance,LPCTSTR(IDI_ICON1)); wndclass.hCursor = LoadCursor(NULL,IDC_ARROW); wndclass.hbrBackground = (HBRUSH)(COLOR_3DFACE + 1); wndclass.hInstance = hInstance; wndclass.lpszClassName = szClassName; wndclass.lpszMenuName = NULL; wndclass.hIconSm = NULL; //注册窗口类 ::RegisterClassEx(&wndclass); //创建窗口 HWND hwnd = ::CreateWindowEx(0, //扩展样式 szClassName, //类名 "时钟", //窗口标题 WS_POPUP | WS_SYSMENU | WS_SIZEBOX, //窗口风格 50, //默认 X 坐标 50, //默认 Y 坐标 300, //默认宽度 300, //默认高度 NULL, //父窗口句柄 NULL, //菜单句柄 hInstance, //程序实例句柄 NULL); //用户数据 if(hwnd == NULL) { MessageBox(NULL,"创建窗口出错","error",MB_OK); return -1; } //显示窗口 ::ShowWindow(hwnd,nCmdShow); ::UpdateWindow(hwnd); //进入消息循环,把消息取出交给消息处理函数处理 MSG msg; while(::GetMessage(&msg,NULL,0,0)) { ::TranslateMessage(&msg); ::DispatchMessage(&msg); } //当 return msg.wParam; } LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam) { HDC hdc; PAINTSTRUCT ps; RECT rt; UINT_PTR IDT_CLOCK = 1; //计时器ID号 const int IDM_TOPMOST = 100; const int IDM_ABOUT = 101; switch(msg) { case WM_CREATE: { SYSTEMTIME time; //取得系统当前时间 ::GetLocalTime(&time); if(time.wHour < 12) { nHour = time.wHour; } else { nHour = time.wHour -12; } nMinute = time.wMinute; nSecond = time.wSecond; //创建计时器 ::SetTimer(hwnd,IDT_CLOCK,1000,NULL); //向系统菜单添加自定义的项 HMENU hMenu; hMenu = ::GetSystemMenu(hwnd,FALSE); ::AppendMenu(hMenu,MF_SEPARATOR,0,NULL); ::AppendMenu(hMenu,MF_STRING,IDM_TOPMOST,"总在最前面"); ::AppendMenu(hMenu,MF_STRING,IDM_ABOUT,"关于"); return 0; } case WM_CLOSE: { //删除计时器 KillTimer(hwnd,IDT_CLOCK); //结束程序 ::DestroyWindow(hwnd); return 0; } case WM_PAINT: { hdc = ::BeginPaint(hwnd,&ps); ::GetClientRect(hwnd,&rt); SetIsotropic(hdc,rt.right - rt.left,rt.bottom - rt.top); DrawClockFace(hdc); //一小时走30度 DrawHand(hdc,250,8,nHour * 30 + int((double)nMinute * (30.000 / 60.000)),RGB(0,0,0)); //一分钟走6度 DrawHand(hdc,350,6,nMinute * 6,RGB(0,0,0)); //一秒钟走6度 DrawHand(hdc,420,4,nSecond * 6,RGB(0,0,0)); ::EndPaint(hwnd,&ps); return 0; } case WM_SIZE: { cxClient = LOWORD(lParam); cyClient = HIWORD(lParam); } case WM_TIMER: //计时器消息处理 { if(::IsIconic(hwnd)) //IsIconic 函数用来判断窗口是否处于最小化状态 { return 0; } //建立坐标系 HDC hdc = ::GetDC(hwnd); SetIsotropic(hdc,cxClient,cyClient); SYSTEMTIME time; ::GetLocalTime(&time); COLORREF clrColor = ::GetSysColor(COLOR_3DFACE); //把原来的指针重画成与背景颜色相同,等于擦除了指针 //一小时走30度 DrawHand(hdc,250,8,nHour * 30 + int((double)nMinute * (30.000 / 60.000)),clrColor); //一分钟走6度 DrawHand(hdc,350,6,nMinute * 6,clrColor); //一秒钟走6度 DrawHand(hdc,420,4,nSecond * 6,clrColor); //重设所有时间 if(time.wHour < 12) { nHour = time.wHour; } else { nHour = time.wHour -12; } nMinute = time.wMinute; nSecond = time.wSecond; //重画所有指针 //一小时走30度 DrawHand(hdc,250,8,nHour * 30 + int((double)nMinute * (30.000 / 60.000)),RGB(0,0,0)); //一分钟走6度 DrawHand(hdc,350,6,nMinute * 6,RGB(0,0,0)); //一秒钟走6度 DrawHand(hdc,420,4,nSecond * 6,RGB(0,0,0)); return 0; } case WM_NCHITTEST: //处理鼠标单击消息 UINT nHitTest; nHitTest = ::DefWindowProc(hwnd,msg,wParam,lParam); //如果鼠标按下，GetAsyncKeyState 函数的返回值小于 0 if(nHitTest == HTCLIENT && ::GetAsyncKeyState(MK_LBUTTON) < 0) nHitTest = HTCAPTION; return nHitTest; case WM_CONTEXTMENU: { POINT pt; pt.x = LOWORD(lParam); pt.y = HIWORD(lParam); //取得系统菜单句柄 HMENU hMenu = ::GetSystemMenu(hwnd,FALSE); //弹出系统菜单 int nID = ::TrackPopupMenu(hMenu,TPM_LEFTALIGN | TPM_RETURNCMD,pt.x,pt.y,0,hwnd,NULL); if(nID > 0) ::SendMessage(hwnd,WM_SYSCOMMAND,nID,0); return 0; } case WM_SYSCOMMAND: { int nID = wParam; if(nID == IDM_ABOUT) { ::MessageBox(hwnd,"飘云时钟 v1.0\n程序设计：李继飞\nQQ：617784446","clock",MB_OK); } else if(nID == IDM_TOPMOST) { HMENU hMenu = ::GetSystemMenu(hwnd,FALSE); if(bTopMost) { //设置ID号为 IDM_TOPMOST 的菜单为未选中状态 ::CheckMenuItem(hMenu,IDM_TOPMOST,MF_UNCHECKED); //取消窗口置顶的状态 ::SetWindowPos(hwnd,HWND_NOTOPMOST,0,0,0,0,SWP_NOMOVE | SWP_NOREDRAW | SWP_NOSIZE); bTopMost = FALSE; } else { //设置ID号为 IDM_TOPMOST 的菜单为选中状态 ::CheckMenuItem(hMenu,IDM_TOPMOST,MF_CHECKED); //将窗口提到所有的窗口最前面 ::SetWindowPos(hwnd,HWND_TOPMOST,0,0,0,0,SWP_NOMOVE | SWP_NOREDRAW | SWP_NOSIZE); bTopMost = TRUE; } } return ::DefWindowProc(hwnd,WM_SYSCOMMAND,nID,0); } case WM_DESTROY: { ::PostQuitMessage(0); return 0; } } return ::DefWindowProc(hwnd,msg,wParam,lParam); } int SetIsotropic(HDC hdc,int cx,int cy) { ::SetMapMode(hdc,MM_ISOTROPIC); ::SetWindowExtEx(hdc,1000,1000,NULL); ::SetViewportExtEx(hdc,cx,-cy,NULL); ::SetViewportOrgEx(hdc,cx / 2,cy / 2,NULL); return 0; } void DrawClockFace(HDC hdc) { const int SQUARESIZE = 15; int x,y; //选择一个黑色的画刷 SelectObject(hdc,::GetStockObject(BLACK_BRUSH)); //将角度转化成弧度 2 * 3.141592 / 360 = 0.0174533; double nRadians; for(int i = 0; i < 360; i += 6) { nRadians = (double)i * 0.0174533; x = (int)(450 * sin(nRadians)); y = (int)(450 * cos(nRadians)); if( i % 30 == 0) { ::Ellipse(hdc,x - SQUARESIZE , y + SQUARESIZE , x + SQUARESIZE , y - SQUARESIZE); } else { ::Ellipse(hdc,x - 7 , y + 7 , x + 7 , y - 7); } } } void DrawHand(HDC hdc,int nLength,int nWidth,int nDegrees,COLORREF clrColor) { //将角度转化成弧度 2 * 3.1415926 / 360 = 0.0174533; double nRadians = (double)nDegrees * 0.0174533; //获得坐标的值 POINT pt[2]; pt[0].x = int(nLength * sin(nRadians)); pt[0].y = int (nLength * cos(nRadians)); pt[1].x = -pt[0].x / 5; pt[1].y = -pt[0].y / 5; //创建画笔 HPEN hPen = ::CreatePen(PS_SOLID,nWidth,clrColor); HPEN hOldPen = (HPEN)::SelectObject(hdc,hPen); //画线 ::MoveToEx(hdc,pt[0].x,pt[0].y,NULL); ::LineTo(hdc,pt[1].x,pt[1].y); ::SelectObject(hdc,hOldPen); //删除画笔 ::DeleteObject(hPen); }