A graphics plane for storing a graphics image is a storage region where two storage regions, which are an L (Left) region that is an image storage region to store an image for the left eye, and an R (Right) region that is an image storage region to store an image for the right eye, are arrayed, with a 3D image of the cursor of a pointing device being configured of the image for the left eye, and the image for the right eye, and with a position on either the L region or the R region of the 3D image of the cursor being used as the position of the cursor when issuing an event with the position of the cursor as an argument.