In S706 of FIG. 15A, the control unit 11 in the fourth embodiment is configured to display in the display area 101 the model numbers of only those devices connected to the network that possess a color printing function, but the control unit 11 may instead be configured to display in the display area 101 the model numbers of only those devices possessing a color inkjet printing function. Similarly, in S806 of FIG. 16A the control unit 11 of the fourth embodiment is configured to display in the display area 101 the model numbers of only those devices connected to the network that possess a printing function, but the control unit 11 may be configured to display model numbers in the display area 101 for only those devices that possess a color printing function.
In the process of FIG. 15A, the control unit 11 may be configured to select the device determined to be most suitable for printing photographs and to store identification data for this device as the photo print default device. In this case, the following process may be performed in place of steps S706 and S707. Specifically, the control unit 11 controls the wireless communication unit 14 to broadcast a packet over the network to which the data processing apparatus 1 is connected requesting devices to return their model numbers and information related to the functions they possess. In response, the requested data is returned from each device connected to the network. The control unit 11 controls the wireless communication unit 14 to receive the model number and functional information returned from each device and stores this model number and functional information in RAM.