Timer - Showing stop watch time on form 2

[jimoo]

I want to show a time elapse on a form. The time will continue to show starting at 00:00 and then go up by 1 second intervals: 00:01 = 1 second, 01:01 = 1 minute 1 second, etc..

The timer control is the best option, but how to implement to show the time as I mentioned and stop with the elapse time still showing.



Jim

 

[Olaf Doschke]

To show time elapsed you need a property holding start datetime, eg add a property starttime to the timer or to the form of the timer.
To compute elapsed time you use elapsedseconds=DATETIME()-thisform.starttime
To display the elapsed time you use whatever you like, eg a label.
To create the display format MM:SS you simply compute m=INT(elapsedseconds/60) for minutes and s=elapsedseconds%60 for seconds. Then put together STR(m,2)+":"+STR(s,2)
To keep the elapsed time showing, when you stop you do nothing. You disable the timer and the label or whatever remains unchanged and shows it's last set caption/value. You may update the display one last time when stopping the timer, so you best put the code of computing and displaying elapsed time in a seperate method you call from the Timer event and from a Stopbutton.Click.
To be able to pause and continue you need more than starttime, but this also depends, what behaviour you want.

Bye, Olaf.

 

[Koen Piller]

Hi,

Olaf's advise will work like a charm, however I would not

quote
compute m=INT(elapsedseconds/60) for minutes and s=elapsedseconds%60 for seconds. Then put together STR(m,2)+":"+STR(s,2)
unquote

Do not use of the single letter m for minutes but abbriviate it to e.g. lMins or lMinutes, s for seconds something like lSecs or lSeconds

Just a minor thing but it may prevent a clash.

Regards,

Jockey

 

[Olaf Doschke]

OK, Jockey, you catched me one time, I was lazy to use more verbose variable names...

Actually only the first 15 letters have a double meaning as workareas, too, and m is inside that, als there is m., But in the context of using them as variable names a-n also work. It's less good to use a-m as ALIAS names in SQL-Queries, for example. And it's bad style to abbreviate things in general.

Bye, Olaf.

 

[jimoo]

Thanks Olaf and Jockey. That did the trick.

Jim