Abstract: A window operation method for use in an electronic device comprises a touch-sensitive screen, a storage unit with pointers to slides of a graphical presentation being stored in a database and a processing module. The method applies the steps of storing a touch-control database comprising at least two touch-control events and an assessment field in the storage unit for each pointer to a slide, generating and displaying a slide of the graphical representation and a transparent window, analyzing a touch-control command received via the touch-sensitive screen and determining whether the touch-control command conforms to one of the stored touch-control event, an assessment value is stored in the assessment field in the storage unit for the current pointer to a slide, said assessment value corresponding to an emotional feedback of a user regarding said slide.