[Qt-interest] is it the right way to calculate fps?

[lists4pghanghas]

Hi

Over time I have used two methods for calculating FPS during animations 
in my qt progs.
and always had doubts whether I am getting the right nos or not

1) increment a counter in paint event of widget whose fps I want to know 
and then use that to calcualte fps at the end of animation
2) increment counter everytime animation api emits signal 
valuechanged/framechanged.

Are these methods guaranteed correct in every usecase. And are there any 
better methods ways to do this.

I am asking this question becaues I got a very hight number with these 
methods recently when using scrollArea. That no seems unlikely on my 
embedded hardware.

Thanks
Pritam
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