一、函数原型
VOID CALLBACK TimerProc( HWND hwnd, // handle to window UINT uMsg, // WM_TIMER message UINT_PTR idEvent, // timer identifier DWORD dwTime // current system time ); UINT_PTR SetTimer( HWND hWnd, // handle to window UINT_PTR nIDEvent, // timer identifier UINT uElapse, // time-out value TIMERPROC lpTimerFunc // timer procedure );
二、示例代码
#include <iostream> #include <Windows.h> #include <tchar.h> VOID CALLBACK TimerProc(HWND hwnd, UINT uMsg, UINT_PTR idEvent, DWORD dwTime) { SYSTEMTIME sysTime; GetLocalTime(&sysTime); TCHAR buf[BUFSIZ] = { 0 }; _stprintf_s(buf, BUFSIZ, TEXT("%04d-%02d-%02d %02d:%02d:%02d"), sysTime.wYear, sysTime.wMonth, sysTime.wDay, sysTime.wHour, sysTime.wMinute, sysTime.wSecond); _tprintf(TEXT("%s\n"), buf); } int main(void) { SetTimer(NULL, 1, 1000, TimerProc); MSG msg; while (GetMessage(&msg, NULL, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return 0; }