Here's another tutorial I found:
http://www.creativecrash.com/tutoria...nterfaces#tabs

Found the signals & slot editor in qt designer.
I seem to be able to assign signal to slot inside the qt ui, but was wondering if you could link the signal to string dynamic attribute so I could use the signal to call up mel proc or python def inside maya. The menu doesnt seem to be able to let me...

I know this can be done in PyQt.

On the other hand, I've found that you can edit certain qt ui control via mel or python command once you're in maya.

In the case of a listView(make sure you use item-based), it is accessible via the textScrollEdit command. I can then assign it a command that way. The options available via mel are selectionCommand, doubleClickCommand, deleteCommand, and drag and drop callback.

You can refer to the list in the link above to see which mel command controls the qt ui. The problem is that not all of the ui option for qt are supported within maya.
The link says that tabLayout control tabWidget, but I havent been able to at this point. All the other mel command/qt ui combination works.

more Later...