I think there is a bug in the SDK slider UI. The situation is as the following:

I created a slider in QT4.6:

Phonon::SeekSlider *slider = new Phonon::SeekSlider(this);

In SDK runtime, the slider however is always disabled. I cannot drag nor click it. Strangely, when I run the same code on my N900, I can interact with the UL normally.

I am pretty sure the bug is not causing by my code because when I open the default media player in SDK runtime, the slider bar is disabled as well (even when a song is playing).

Can anyone give me some pointers how to solve this?