3rd party software that can customize touch drag?

[morbus]

I'd like to have a "drag a window" action happen if I use one finger on the touchpad to move the mouse, and at the same time, hold down the command key on the keyboard.

I have looked at BetterTouchTool (seems to be the most popular solution to mouse customizing) but it does not seem to support customizing touch drag type functions.

 

[morbus]

Not sure if the lack of replies means this is for some reason not possible??