Abstract: A data processing system for emulating a desktop application desktop software applications in a mobile communication network that comprises (a) an agent for identifying and activating UI objects of a desktop application, and changes in the UI objects (b) a Designer-Tool that is associated with the agent, to generate offline (b.1) a plurality of data sets including representations for objects and states of the desktop application to be converted to corresponding mobile objects and states; (b.2) a plurality of representations of required changes in objects in response to user actions; (b.