| 摘要 |
In a menu window, when a user touches an area outside buttons on a touch panel, a main control unit vibrates the touch panel by using a first vibration pattern. When the user moves his/her finger along the touch panel so as to reach the range of coordinates of one of the buttons, the main control unit generates the first vibration pattern which indicates the acceptance of an operation of selecting the button and changes the color of the button to a color indicating a button selected state when the touched position reaches the range of the button. Then, the main control unit accepts an operation of deciding the button according to a release operation or long touch performed thereafter.
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