[Qt-interest] Using QMouseEvent as a fallback for QTouchEvent

[Gabriel M. Beddingfield]

How do I detect if there are any "touch" devices currently 
connected?  If there is none, I want to fall back on mouse 
events... but if one is connected I want to use touch 
exclusively.

I have an app that is using QTouchEvent for its main logic. 
I ignore all mouse events.

However, if Qt doesn't detect any "touch" devices... it 
won't send any touch events.  In this case, I would like to 
fall back on using mouse events.

Is there a straightforward Qt way to do this?

-gabriel