Embodiments of the invention comprise techniques to detect support for a given input device by a screen element of a graphical user interface (GUI). In one embodiment of the invention, a runtime version of a screen element's program code is examined to detect an ability to process a device's events....http://www.google.de/patents/US6930695?utm_source=gb-gplus-sharePatent US6930695 - Method and apparatus for detecting device support in a graphical user interface
