I played with Auto Hotkey (AHK) recently as I wanted to add a layer to my keyboard. Wow, what powerful software! But I really disliked the scripting language and wished they'd used a standard language.
I ended up installing TouchCursor [1] which did everything I need at present, but will persevere with AHK.
AltDrag has been one of the first pieces of software I install on a Windows machine for years now. Such a time saver.
As we're a little OT here, I might as well recommend you check out GridMove which moves windows to predefined positions on any of the screens with a press of a hotkey.
I ended up installing TouchCursor [1] which did everything I need at present, but will persevere with AHK.
1: http://martin-stone.github.io/touchcursor/