[Qt-interest] Realtime timing in Qt

[Daniel Price]

What's the simplest way to implement 'realtime' timing in Qt? I'm using a QGLWidget and I want to do some animation such that the framerate remains constants regardless of the size of the view or the complexity of the scene.

I've done this kind of thing before in Win32 using the Windows precision timers but I'm looking for a portable solution that makes use only of Qt.

I don't think QTimer will cut it because it is event-based. Ditto for QThreads and signal/slots.

Ideally I'd have a loop that checks the number of milliseconds passed since the last iteration. If the number is less than the required framerate, the (main) thread will sleep for the remainder, giving time to any other threads (sleep(0) in Win32).

How can I do this in Qt?


Daniel Price
Software Engineer
FXhome Limited

daniel.price at fxhome.com<mailto:daniel.price at fxhome.com>
http://fxhome.com


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