Screenshot & Automatic Annotator

Hi, I would like software coded that will simply do two things: 1. Take a screenshot of the active window including the mouse pointer if possible, whenever a major action is taken. That is a screenshot is taken for any action other than moving the mouse, or pressing a letter key on the keyboard (i.e. typing text) 2. Automatically annotating the action in a separate text file, for instnce "press the F2 key," "check the opt in checkbox," etc. It might be possible to do this in Autoit. This should be a Windows app, but if you can also compile it for Mac and Linux, I'll send a bonus. The software will have a GPL license.