I was wondering if it would be possible to use the Windows on-screen keyboard inside the game? I am disabled so I can only use my mouse and the left side of my keyboard at once.
Captainclaw, via warframe.com

Many players who are unable to use a physical keyboard use a virtual on-screen keyboard, that can be controlled by a mouse or by assistive tech such as eye-gaze or switch. For these to work, the game must be in windowed mode, and allow other applications to sit over the top.

Best practice example: Torchlight II