Replicating windows trackpad gesture in OS-X - drag to edge

Question

While the Mac Trackpad is superior in almost every way, there is one missing feature I loved on my Dell Laptop (Windows 7).  It is hard to describe, and thus, hard to search for info on. Basically, on my windows touchpad, I can tap and drag an object (one and a half taps, hold, and drag to move (eg) a window). Identical between Mac and Windows at this point. But - when I drag on my WIndows touchpad, and reach the edge of the physical touchpad, the movement continues indefinitely until I 'back off' from the edge.  I think it might be called continuous scroll.  This is useful when you need to move the cursor on the screen further than the physical 'travel' of the trackpad allows.
On the Mac touchpad, I've tried turning on 'Drag Lock' in accessibility, and this helps in the one situation where you 'run out of room' to scroll, but introduces the need to always 'single tap' to end the action, which means an extra step for 90% of trackpad activities. I've also got 'with inertia' selected, but that doesn't help.
The most crititcal need for this feature, for me, is when trying to draw an exact selection box around an object when doing graphical work. You start your selection at the top left, then carefully drag to the lower right, but - if you run out of room on the trackpad you have to let go and start again. On my Windows Laptop, I start my selection top left, then drag to lower right, and if I run out of room, the selection just keeps growing until I back off from the edge slightly.
Any ideas? Thanks!

Answer 1

If an Apple engineer has read this, it appears they aren't willing to share their knowledge. Be that as it may, this is what I've discovered so far:
The Snow Leopard link keys can be found in /private/var/root/Library/Preferences/blued.plist. This file can be opened with a Pist editor. In my case, it contains a couple of entries (couplings) for my only Bluetooth device, i.e., the Magic Trackpad, whose MAC address is paired with a couple of entries, which I supposed are MAC "identities" of my Bluetooth USB receiver. The Plist editor shows one 16-bit hex key for each pairing.
Now, in theory, these keys should be copied to the relevant Windows registry entries in Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BTHPORT\Parameter s\Keys\
(these entries MUST be accessed running psexec -s -i regedit.exe).
There are two main entries under ...\Parameters\Keys, each coinciding with what I presume are the two (?) MAC addresses of the Bluetooth dongle. Under each of these entries there's a REG_BINARY key whose name is the MAC address of the Magic Trackpad and whose value (the Bluetooth link key both devices share to communicate) SHOULD be made the same as in blued.plist.
Unfortunately, the operation doesn't work. Now my Windows registry contains the same link keys as my blued.plist, but the Magic Trackpad doesn't do anything in Windows (and I don't want to pair it again, or I would be forced to do the reverse operation in blued.plist.
I must be missing something. Are the link keys in blued.plist to be interpreted as big-endian, so that bits should be swapped in the Windows registry? Any advice will be most welcome.