A method of controlling a computer system is disclosed. The computer system is adapted to receive inputs from an interactive display surface and one or more other input devices. The computer system is further adapted to display images on the interactive display surface and a further display surface. The interactive display surface and the further display surface forms a contiguous desktop display for the computer system. The method includes receiving input data from the one or more input devices, where a foreground application is determined in dependence upon the input data from the one or more input devices and receiving input data from the interactive display surface, where the input data from the interactive display surface does not affect the determination of the foreground application.
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