//定时器消息//设置了定时器之后，操作系统每隔一段相同的时间就产生WM_TIMER消息//原型UINT_PTR SetTimer(HWND hWnd, //窗口句柄UINT_PTR nIDEvent, //定时器idUINT uElapse, // 每隔多长时间TIMERPROC lpTimerFunc); //处理函数//一、winproc中case WM_TIMER:处理SetTimer(hwnd, 1, 1000, NULL);//显示更新窗口之后， 消息循环之前//二、自定义timeproc中处理SetTimer(hwnd, 1, 1000, timeproc);//显示更新窗口之后， 消息循环之前//最后都要在while()结束时KillTimer(hwnd, 1); //对应ID号//===========================小程序：打印时间=========================
//My Projecr
#include<windows.h>#include<tchar.h>HANDLE g_h;void CALLBACK timeProc(HWND hWnd, UINT id, UINT_PTR xxx, DWORD ooo){// //获取系统的UTC时间。 //// SYSTEMTIME stUTC;//// ::GetSystemTime(&stUTC);////// //显示时间的间隔。 //// const int nBufSize = 256;//// TCHAR chBuf[nBufSize];//// wsprintf(chBuf, _T("UTC: %u/%u/%u %u:%u:%u:%u %d\r\n"),//// stUTC.wYear, stUTC.wMonth, stUTC.wDay,//// stUTC.wHour, stUTC.wMinute, stUTC.wSecond,//// stUTC.wMilliseconds, stUTC.wDayOfWeek);//// WriteConsole(g_h, chBuf, _tcslen(chBuf), NULL, NULL);////获取当地的时间。 SYSTEMTIME stLocal;::GetLocalTime(&stLocal);//显示时间的间隔。 const int nBufSize = 256;TCHAR chBuf[nBufSize];//显示时间的间隔。 wsprintf(chBuf, _T(" %02d:%02d:%02d\n"),stLocal.wHour, stLocal.wMinute, stLocal.wSecond);WriteConsole(g_h, chBuf, _tcslen(chBuf), NULL, NULL);}TCHAR ClassName[100] = _T("潭州");LRESULT CALLBACK winProc(HWND hWnd, UINT msg, WPARAM wp, LPARAM lp){switch (msg){case WM_DESTROY:PostQuitMessage(0);break;/*case WM_TIMER:WriteConsole();*/default:break;}return DefWindowProc(hWnd, msg, wp, lp);}int WinMain(HINSTANCE hIns, HINSTANCE hPIns, LPSTR lpCmd, int show){WNDCLASS wc;wc.hInstance = hIns;wc.lpfnWndProc = winProc;wc.hCursor = NULL;wc.hIcon = NULL;wc.style = NULL;wc.hbrBackground = NULL;wc.lpszMenuName = NULL;wc.lpszClassName = ClassName;wc.cbClsExtra = NULL;wc.cbWndExtra = NULL;//registerATOM res = RegisterClass(&wc);if (!res){MessageBox(NULL, _T("注册失败"), ClassName, MB_OK);return 0;}//createHWND hWnd = CreateWindow(ClassName, _T("hello world"), WS_OVERLAPPEDWINDOW, 520, 100, 520, 520, NULL, NULL, hIns, NULL);if (!hWnd){MessageBox(NULL, _T("创建失败"), ClassName, MB_OK);return -1;}//show ShowWindow(hWnd, SW_SHOW);//update UpdateWindow(hWnd);//定时器SetTimer(hWnd, 1, 1000, timeProc);//SetTimer(hWnd, 2, 1000, NULL);//message circleMSG msg = { 0 };//分配一个控制台 AllocConsole();//获取句柄 标准输出句柄g_h = GetStdHandle(STD_OUTPUT_HANDLE);//写入到屏幕WriteConsole(g_h, _T("时间\n"), _tcslen(_T("时间\n")), NULL, NULL);//PeekMesssge只得到那些与参数hWnd标识的窗口相联系的消息或被lsChild确定为其子窗口相联系的消息，//并且该消息要在由参数wMsgFiterMin和wMsgFiherMax确定的范围内。//如果hWnd为NULL，则PeekMessage接收属于当前调用线程的窗口的消息（PeekMessage不接收属于其他线程的窗口的消息）。//如果hWnd为 - 1，PeekMessage只返回hWnd值为NULL的消息，该消息由函数PostThreadMessage寄送。//如果wMsgFilterMin和wMsgFilterMax都为零，PeekMessage返回所有可得的消息（即，无范围过滤）。while (1){if (PeekMessage(&msg, NULL, 0,0,PM_NOREMOVE)){if (!GetMessage(&msg, NULL, 0, 0)){break;}else{TranslateMessage(&msg);DispatchMessage(&msg);}}else{}}KillTimer(hWnd, 1);return 0;}
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