Portable Information Terminal, Touch Operation Control Method, and Program

A touch operation control method to a touch panel that is provided on a display panel that is included in a portable information terminal, the touch operation control method comprising:

• a coordinate acquiring step of acquiring coordinates on which a touch operation is performed from the touch panel when there is the touch operation to the touch panel;
• a judgment step of judging whether or not the touch operation to the touch panel is a touch operation to an edge area of the touch panel, based on the acquired coordinates;
• a usage state judgment step of judging a usage state by the touch operation when it is judged. that the touch operation to the touch panel is the touch operation to the edge area of the touch panel;
• and
• a touch operation control step of limiting the touch operation to the edge area of the touch panel, based on the judged usage state.

A non-transitory computer-readable storage medium having a program stored thereon that is executable by a computer of a portable information terminal equipped with a touch panel on a display panel to perform functions comprising:

• a coordinate acquiring function to acquire coordinates on which a touch operation is performed from the touch panel when there is the touch operation to the touch panel;
• a judgment function to judge whether or not the touch operation to the touch panel is a touch operation to an edge area of the touch panel, based on the coordinates that are acquired by the coordinate acquiring function;
• a usage state judgment function to judge a usage state by the touch operation when the judgment function judges that the touch operation to the touch panel is the touch operation to the edge area of the touch panel;
• and
• a touch operation control function to limit the touch operation to the edge area of the touch panel, based on the usage state that is judged by the usage state judgment function.