Mini timer

Anyone who has used a timer knows that you generally need to inherit a class and add a callback. Sometimes you need to use multiple timers to call back a thing. In short, it is more troublesome to use.

I simplified it a bit. hope its good for U.S..

1. /**
2. * author :windcao [email protected]
3. * file: minitimer.h
4. * desc: a mini and useful timer
5. * copyright: windcao ,2004-08-02
6. */
7. #ifndef _WINDCAO_MINI_TIMER_
8. #define _WINDCAO_MINI_TIMER_
9. class MMiniTimerObserver
10. {
11. public:
12.     virtual void OnTimeOut(TInt id)=0;
13. };
14. class CMiniTimer:public CTimer
15. {
16. public: 
17.     CMiniTimer(TInt aPriority,MMiniTimerObserver& aObserver,TInt aId=0)
18.         : CTimer(aPriority),iObserver(aObserver),iID(aId){  CActiveScheduler::Add(this);}
19.     virtual ~CMiniTimer(){  Cancel();}
20. private:
21.     void RunL(){ if(iStatus==KErrNone)iObserver.OnTimeOut(this->iID);}   
22.     //don`t use this timer to at
23.     void At(const TTime& aTime){}
24.     MMiniTimerObserver & iObserver;
25.     TInt iID;
26. };
27. #endif _WINDCAO_MINI_TIMER_

 

 

Instructions:

1 Add the header file #include "minitimer.h"

2 To implement MMiniTimerObserver, if multiple timers use one observer, you need to define multiple ids

3 construct timer

1. CMiniTimer iTimer1;
2. CMiniTimer iTimer2;
3. CMiniTimer iTimer3;
6. iTimer1= CMiniTimer(CActive::EPrioprtyIdle,aObserver,EFirst);
7. iTimer2 = CMiniTimer (CActive :: EPrioprtyIdle, Observer, Second);
8. iTimer3= CMiniTimer(CActive::EPrioprtyIdle,aObserver,EThrid);

4 Use CTimer::After to start the timer. Note that this timer is not recommended for At operation. Generally there will be problems.