自己的第一个C++定时器

第一次写定时器...很简陋...

//MyTimer.h#include <stdio.h>#include <windows.h>class MyTimer{public: MyTimer(); ~MyTimer(); void initTimer(); void myStart(int msec); bool myTimeout();private: int initialized; LARGE_INTEGER mFrequency; LARGE_INTEGER mBeginTime; int mTimeout;};//MyTimer.cpp#include "MyTimer.h"MyTimer::MyTimer(){}MyTimer::~MyTimer(){}void MyTimer::initTimer(){ initialized = QueryPerformanceFrequency( &mFrequency );}void MyTimer::myStart(int msec){ if( !initialized ) return ; mTimeout = msec; QueryPerformanceCounter( &mBeginTime );}bool MyTimer::myTimeout(){ if( !initialized ) return false; LARGE_INTEGER endTime; QueryPerformanceCounter( &endTime ); double elapsedTime; elapsedTime = (double)( endTime.QuadPart - mBeginTime.QuadPart ); //if( (elapsedTime /(double)(mFrequency.QuadPart)) > mTimeout ){ if( (elapsedTime*1000 /(double)(mFrequency.QuadPart)) > mTimeout ){ //msec mBeginTime = endTime; return true; } return false;}