I am developing software for a small eye doctor's office. Part of the eye exam component requires that the doctor draw (nothing extensive, a few lines or so) a picture of each eye. I need to incorporate this functionality in the app...namely, there should be a templated bitmap that contains an outline of eye to which the doctor can add his or her graphical input via the mouse.
How would you implement this functionality? (PS - The graphic must be saved to file so that it can be associated with this exam)