c# - How can an app hook into text selection system-wide?

Question

I'd like to be able to track text selections across any application -- is there a hook to enable this behavior on Win32?

Bonus: Anyone gurus know the equivalent hooks for OS X & Linux?

Answer 1

SetWindowsHookEx will do the trick.

http://msdn.microsoft.com/en-us/library/ms644990(v=vs.85).aspx