Getting word under the cursor

Hi there,

for a new project I would need the exact word that lies under the current cursor position.Its quite easy to accomplish this with jQuerry within a browser but I need to do this system wide. As far as I know this is not possible with MSAA or UIA because it will only give you the whole text, but not the word.

Is there any possibility to achieve this or might it also be achievable with MSAA/UIA?

Thanks in advance,

Rambazamba