Re-engineering graphical user interfaces from their resource files with UsiResourcer

This paper addresses the problem of modernizing graphical user interfaces of interactive applications by re-engineering their resource files in four phases: resource decompilation, which extracts resource files from the executable code of an interactive application; modeling the source user interface, which transforms extracted resources into a resource model; resource to user interface transformation, which transforms the resource model into a Concrete User Interface model, and forward engineering, which offers two alternatives: after editing the user interface model, a new interface could be generated or recompiled into a resource to be incorporated back. The paper motivates and details this re-engineering approach by focusing on methods and algorithms implemented in UsiResourcer, a software tool that reverse engineers MS Windows resource files into a Concrete User Interface Model for further process. A discussion on the generalization of the approach is also provided.