I'm trying to make a program to measure time quite accurately (it's a chronometer for byke racing). I noticed that setting the interval at 10 my chronometer fails by several seconds per minute, while setting it at 100 thing go a little better, but even with an interval of 1000 I get a 2 soc/min error! I tried with VB6 and had the same problem. Now, has my computer gone nuts or is this a common problem?(it's an AMD 1.7G 512 Mb). Thank you all
I suppose QTimer implemented in Windows is still using native basic timer, i.e. 18.2Hz, i.e. 55mS resolution. I suggest don't rely on this as a real world stop-watch, you can read machine clock / timestamp in ontimer event handler, rather than accumulate the qtimer ticks itself. Here's a high resolution timestamp: http://g.yi.org/?f=1242#1382
搜索
论坛
Home
回顶部
1. Problem with QTimer
g.yi.org Hits:0
