PDQt is at version 0.8 now.
The function of the Action button was divided between the Shift button (Shift key) and the Action button (Return key).
Furthermore, now PDQt recognizes circling gestures. Circling around the center of the program's screen clockwise increases the current value, circling counter-clockwise decreases it.
You may download the new package for Cacko and maybe other Qtopia based distributions from this page. Otherwise you might want to download the source code and compile it for yourself — you will need Qt3 compilation environment only, either on Win32 or on Linux.