Wake up from sleep event (?)
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I'm looking for some way to detect that the computer has been woken after sleeping.
My problem is that my application estimates the time remaining to complete long tasks. When a laptop goes to sleep, the time elapsed will be wrong because it will include time spent sleeping.
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Correct me, if I'm wrong, but I don't think Qt has an even/signal for this.
You'd have to implement it yourself, using the "native" API of the underlying operating system.
On Windows, you would have to wait for a WM_POWERBROADCAST message:
http://msdn.microsoft.com/en-us/library/windows/desktop/aa373247(v=vs.85).aspx
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Check also:
http://qt-project.org/doc/qt-4.8/qcoreapplication.html#setEventFilter