自定义定时器的一种方法
这几天在用MFC做有关定时器的东西，发现MFC自带的定时器方式SetTimer方式不适合用于频繁重新计时的方式，过多地Stop和SetTimer程序会死掉，因此，自已用线程的方式做了一个定时器类:
#pragma once#include "afxwin.h"#define ONESHOT 0#define PERIOD 1typedef int (*tp_ontimer)(void *param);class CMyTimer{public:CMyTimer(void);~CMyTimer(void);protected:DWORD m_start_tick;UINT m_timeout;public:static UINT CounterThread(void * param);protected:bool m_run_flag;public:void init(int mode,int timeout, tp_ontimer handle,void *param);protected:tp_ontimer m_onhandle;public:void init(void);void SetTimeouet(int timeout);void SetOnhandle(tp_ontimer handle,void *param);protected:CWinThread *m_thread;public:int Start(void);void Stop(void);void Restart(void);protected:void *m_param;int m_mode;};
#include "StdAfx.h"#include "TboxTimer.h"CTboxTimer::CTboxTimer(void): m_start_tick(0), m_timeout(0), m_run_flag(false),m_onhandle(NULL),m_thread(NULL), m_param(NULL), m_mode(0){}CTboxTimer::~CTboxTimer(void){}UINT CTboxTimer::CounterThread(void * param){CTboxTimer *timer =(CTboxTimer *)param;while(timer->m_run_flag){if(GetTickCount() -timer->m_start_tick >=timer->m_timeout){//do something hereif(timer->m_onhandle !=NULL){if(0 !=(*timer->m_onhandle)(timer->m_param)){timer->Stop();break;}if(timer->m_mode ==ONESHOT){timer->Stop();break;}timer->m_start_tick =GetTickCount();//更新记时起点}}Sleep(20);}return 0;}void CTboxTimer::init(int mode,int timeout, tp_ontimer handle=NULL,void *param=NULL){m_mode =mode;m_timeout =timeout;m_onhandle =handle;m_param =param;}void CTboxTimer::init(void){m_timeout =0;m_onhandle =NULL;}void CTboxTimer::SetTimeouet(int timeout){m_timeout =timeout;}void CTboxTimer::SetOnhandle(tp_ontimer handle,void *param){m_onhandle =handle;m_param =param;}int CTboxTimer::Start(void){if(m_run_flag){return 0;}m_run_flag =true;m_start_tick =GetTickCount();m_thread =AfxBeginThread(CounterThread,this);if(m_thread ==NULL){m_run_flag =false;return -1;}return 0;}void CTboxTimer::Stop(void){m_run_flag =false;}void CTboxTimer::Restart(void){m_start_tick =GetTickCount();}