SetTimer not getting called every 20ms

[tpremore]

I have a SetTimer call:
SetTimer(1, 20, NULL);

And a handler:
void Xxx::OnTimer(UINT nIDEvent)
{
...

if(nIDEvent == 1)
{
...
}
}

But the Handler code is not being called every 20ms as requested. Is this dependent on the Machine on which it runs, or the operating system as to whether it can keep up with this high rate of function calling?
Is there something faster that can be used?

Thank you in advance for any advice!!


-Travis

 

[Guest_imported]

The resolution of the Windows timer is approx 55 mSec so you can't get the time that you require. To make matters worse, the timer events get added to the application's message queue so they are not acted upon until other messages have been processed.

If you need accurate time intevals, use a multimedia timer. If you need a code frag let me know.

It would help if you let me know if you are using C++ or just plain 'C'.