A PC is provided with a display control portion for displaying, in a setting dialogue box in which setting items corresponding to each function are provided in order to perform an operation setting for each function of a plurality of connected devices, illustrations of the plurality of devices, a device information storage portion for storing a mounted function for each of the devices, a detecting portion for detecting that a pointer indicates the setting item, and a device determination portion for determining the device mounted with a function corresponding to the detected setting item. The display control portion performs a display of an illustration of a function mounted device specified by the device determination portion of the plurality of devices in a different form from illustrations of other devices.