Input method and electronic device using pen input device

An input method for an electronic device, which includes a touchscreen surface, using a pen input device, the method comprising:

• receiving status information of the pen input device;
• generating contact information of an actual contact point between the pen input device and the electronic device in which the pen input device is in contact with the touchscreen surface, based on the received status information;
• and
• varying expressive effects of a pen input, based on the contact information,
• wherein the expressive effects are determined from the actual contact point between the pen input device and the touch screen surface and stored reference information,
• wherein contact information includes a size and a shape of the contact point, and
• wherein the status information includes tilt information of the pen input device, the tilt information being determined from at least the size and the shape of the actual contact point and the stored reference information.