Hi,
I have a timer class and I would like to send an event based on specifc
times from the timer,
example at maybe every 500ms call a function, most likely a callback,
similar to the way the Systems.Timer works.
Is there a way one can create events to accomplish this?
Thanks
Jeff

There is already a timer class to do this. Is there any reason you
wanted to do it, yourself?

--
Sean

Hello Hoop,

Timer class supports System.Threading.TimerCallback callback
see http://msdn.microsoft.com/library/de...sctortopic.asp

H> Hi,
H> I have a timer class and I would like to send an event based on
H> specifc
H> times from the timer,
H> example at maybe every 500ms call a function, most likely a callback,
H> similar to the way the Systems.Timer works.
H> Is there a way one can create events to accomplish this?
H> Thanks
H> Jeff
---
WBR,
Michael Nemtsev :: blog: http://spaces.msn.com/laflour

"At times one remains faithful to a cause only because its opponents do not
cease to be insipid." (c) Friedrich Nietzsche

Hi Sean,
I have the timer class running allready. Resolution is only 55ms at
best.
I need something much faster, so I have HighRes timer class that I
would like somehow to be event driven in the same way as the timer.
Thought may there was a way to add user defined events.
Thanks
Jeff


senfo wrote:
> There is already a timer class to do this. Is there any reason you
> wanted to do it, yourself?
>
> --
> Sean

Hi Michael,
I have tried System.Threading.Timer. Works much better than standard
windows timer. That is most likely what I will
wind up using. Was just trying to see if there was a way that I could
try this HighRes timer class
that I have.
Thanks
Jeff

Michael Nemtsev wrote:
> Hello Hoop,
>
> Timer class supports System.Threading.TimerCallback callback
> see http://msdn.microsoft.com/library/de...sctortopic.asp
>
> H> Hi,
> H> I have a timer class and I would like to send an event based on
> H> specifc
> H> times from the timer,
> H> example at maybe every 500ms call a function, most likely a callback,
> H> similar to the way the Systems.Timer works.
> H> Is there a way one can create events to accomplish this?
> H> Thanks
> H> Jeff
> ---
> WBR,
> Michael Nemtsev :: blog: http://spaces.msn.com/laflour
>
> "At times one remains faithful to a cause only because its opponents do not
> cease to be insipid." (c) Friedrich Nietzsche

Hello Hoop,

How much faster do u need? Windows is not real time OS. AFAIK the bottom
line is 20ms

H> Hi Michael,
H> I have tried System.Threading.Timer. Works much better than standard
H> windows timer. That is most likely what I will
H> wind up using. Was just trying to see if there was a way that I could
H> try this HighRes timer class
H> that I have.
H> Thanks
H> Jeff
H> Michael Nemtsev wrote:
H>
>> Hello Hoop,
>>
>> Timer class supports System.Threading.TimerCallback callback
>>
>> see
>> http://msdn.microsoft.com/library/de...ary/en-us/cpre
>> f/html/frlrfsystemthreadingtimerclassctortopic.asp
>>
>> H> Hi,
>> H> I have a timer class and I would like to send an event based on
>> H> specifc
>> H> times from the timer,
>> H> example at maybe every 500ms call a function, most likely a
>> callback,
>> H> similar to the way the Systems.Timer works.
>> H> Is there a way one can create events to accomplish this?
>> H> Thanks
>> H> Jeff
>> ---
>> WBR,
>> Michael Nemtsev :: blog: http://spaces.msn.com/laflour
>> "At times one remains faithful to a cause only because its opponents
>> do not cease to be insipid." (c) Friedrich Nietzsche
>>
---
WBR,
Michael Nemtsev :: blog: http://spaces.msn.com/laflour

"At times one remains faithful to a cause only because its opponents do not
cease to be insipid." (c) Friedrich Nietzsche

Hi Michael,
Probably using the threading timer is maybe going to be OK, or maybe
just a thread and sleep() it for a some chosen time.
But I was trying to see if QueryPerformanceCounter() could beat it. I
have seen 15ms with the treading timer. A little jumpy but that might
work.
Thanks
Jeff

Michael Nemtsev wrote:
> Hello Hoop,
>
> How much faster do u need? Windows is not real time OS. AFAIK the bottom
> line is 20ms
>
> H> Hi Michael,
> H> I have tried System.Threading.Timer. Works much better than standard
> H> windows timer. That is most likely what I will
> H> wind up using. Was just trying to see if there was a way that I could
> H> try this HighRes timer class
> H> that I have.
> H> Thanks
> H> Jeff
> H> Michael Nemtsev wrote:
> H>
> >> Hello Hoop,
> >>
> >> Timer class supports System.Threading.TimerCallback callback
> >>
> >> see
> >> http://msdn.microsoft.com/library/de...ary/en-us/cpre
> >> f/html/frlrfsystemthreadingtimerclassctortopic.asp
> >>
> >> H> Hi,
> >> H> I have a timer class and I would like to send an event based on
> >> H> specifc
> >> H> times from the timer,
> >> H> example at maybe every 500ms call a function, most likely a
> >> callback,
> >> H> similar to the way the Systems.Timer works.
> >> H> Is there a way one can create events to accomplish this?
> >> H> Thanks
> >> H> Jeff
> >> ---
> >> WBR,
> >> Michael Nemtsev :: blog: http://spaces.msn.com/laflour
> >> "At times one remains faithful to a cause only because its opponents
> >> do not cease to be insipid." (c) Friedrich Nietzsche
> >>
> ---
> WBR,
> Michael Nemtsev :: blog: http://spaces.msn.com/laflour
>
> "At times one remains faithful to a cause only because its opponents do not
> cease to be insipid." (c) Friedrich Nietzsche

"Hoop" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi Sean,
> I have the timer class running allready. Resolution is only 55ms at
> best.
> I need something much faster, so I have HighRes timer class that I
> would like somehow to be event driven in the same way as the timer.
> Thought may there was a way to add user defined events.

Absolutely. Add the following inside your class:

public event EventHandler Expired;
private void CallInterestedParties()
{
if (Expired != null) Expired(/* sender */ this, /* EventArgs */
EventArgs.Empty);
}


> Thanks
> Jeff
>
>
> senfo wrote:
>> There is already a timer class to do this. Is there any reason you
>> wanted to do it, yourself?
>>
>> --
>> Sean
>

"Hoop" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi Michael,
> Probably using the threading timer is maybe going to be OK, or maybe
> just a thread and sleep() it for a some chosen time.
> But I was trying to see if QueryPerformanceCounter() could beat it. I
> have seen 15ms with the treading timer. A little jumpy but that might
> work.
> Thanks
> Jeff

Waitable Timer, WaitForSingle/MultipleObject with a timeout, or select() all
should give better resolution. I have had 60 fps graphing using
MsgWaitForMultipleObjectsEx on a waitable timer in C++, and I think it could
have been smoother yet, but my graph only had room for 60 horizontal
pixels/second.

>
> Michael Nemtsev wrote:
>> Hello Hoop,
>>
>> How much faster do u need? Windows is not real time OS. AFAIK the bottom
>> line is 20ms
>>
>> H> Hi Michael,
>> H> I have tried System.Threading.Timer. Works much better than standard
>> H> windows timer. That is most likely what I will
>> H> wind up using. Was just trying to see if there was a way that I could
>> H> try this HighRes timer class
>> H> that I have.
>> H> Thanks
>> H> Jeff
>> H> Michael Nemtsev wrote:
>> H>
>> >> Hello Hoop,
>> >>
>> >> Timer class supports System.Threading.TimerCallback callback
>> >>
>> >> see
>> >> http://msdn.microsoft.com/library/de...ary/en-us/cpre
>> >> f/html/frlrfsystemthreadingtimerclassctortopic.asp
>> >>
>> >> H> Hi,
>> >> H> I have a timer class and I would like to send an event based on
>> >> H> specifc
>> >> H> times from the timer,
>> >> H> example at maybe every 500ms call a function, most likely a
>> >> callback,
>> >> H> similar to the way the Systems.Timer works.
>> >> H> Is there a way one can create events to accomplish this?
>> >> H> Thanks
>> >> H> Jeff
>> >> ---
>> >> WBR,
>> >> Michael Nemtsev :: blog: http://spaces.msn.com/laflour
>> >> "At times one remains faithful to a cause only because its opponents
>> >> do not cease to be insipid." (c) Friedrich Nietzsche
>> >>
>> ---
>> WBR,
>> Michael Nemtsev :: blog: http://spaces.msn.com/laflour
>>
>> "At times one remains faithful to a cause only because its opponents do
>> not
>> cease to be insipid." (c) Friedrich Nietzsche
>

Hi Sean,
Yes, that looks like what I want to try.
I am having trouble with setting up the event to run.

After adding that code to the HiResTimer(),
In my main form, pressureForm, in the constructor, I do

public pressureForm()
{
startTimer()
}

startTimer()
{
MyTimer.HiResTimer.Start();

//Error, the name Expired does not exist in the current context
MyTimer.HiResTimer.ElapasedTime += new EventHandler(Expired);

}

Must not be exact way to do it.
Jeff

Ben Voigt wrote:
> "Hoop" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
> > Hi Sean,
> > I have the timer class running allready. Resolution is only 55ms at
> > best.
> > I need something much faster, so I have HighRes timer class that I
> > would like somehow to be event driven in the same way as the timer.
> > Thought may there was a way to add user defined events.
>
> Absolutely. Add the following inside your class:
>
> public event EventHandler Expired;
> private void CallInterestedParties()
> {
> if (Expired != null) Expired(/* sender */ this, /* EventArgs */
> EventArgs.Empty);
> }
>
>
> > Thanks
> > Jeff
> >
> >
> > senfo wrote:
> >> There is already a timer class to do this. Is there any reason you
> >> wanted to do it, yourself?
> >>
> >> --
> >> Sean
> >