how to create a timer

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Hi Guys,

I need to create one timer that should Run when i start my GUI and should Exit when i exit the GUI . the Timer should Start from 00:00:00...pls help me in doing this

Posted 3-Jul-12 22:05pm

Member 9102753

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Jochen Arndt 4-Jul-12 4:13am

What is your intention? Measuring execution times or performing actions in defined intervals?

Sandeep Mewara 4-Jul-12 4:21am

Your question does not state where are you stuck in it. Please be specific.

Member 9102753 4-Jul-12 5:19am

Actually When i start my application the timer should start running ,so that i can find when it has started . i find some examples like CTime curtime=CTime::GetCurrentTime()...but by using that function i can get my pc time while i start my application. here i don't want pc time it should start as a stop watch kind of think

Jochen Arndt 4-Jul-12 5:31am

Then just store the current time at application start in a member variable and get the elapsed time by subtracting that value from the current time.

2 solutions

Solution 1

Hi,

Use SetTimer() windows API and overload WM_TIMER message.
Set timer function create a timer for you with given time interval.

http://msdn.microsoft.com/en-us/library/windows/desktop/ms644906(v=vs.85).aspx[^]

Posted 3-Jul-12 22:33pm

Binu MD

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nv3 · Accepted Answer · 2012-07-03T23:19:00

Sounds like you want to use the timer in order to measure for how long your application has been running. For that you don't want to create a timer, because timers are used to give you callbacks in regular time intervals. Instead, you want to register the time at the start of your application, then at the end and then calculate the difference between these two values.

Function time lets you easily retrieve a current time value in seconds. So the subtraction of the two time values is also easy to do.

Another option would be to use MFC's CTime and CTimeSpan classes to do the same.

CTime t0 = CTime::GetCurrentTime();
...
CTime t1 = CTime::GetCurrentTime();

CTimeSpan tTotal = t1 - t0;

Hope that gets you up to speed.