| 摘要 |
<p>PROBLEM TO BE SOLVED: To switch screens in a short time by selecting a window to be displayed next from among display order information according to the page number of a currently displayed window and a display control instruction specifying the mode of display control for switching the display to the next window. SOLUTION: The page number of the currently displayed window stored in a current display page storage part 6 is updated into the next page number according to the page numbers of windows in a drawing data table. This updating process is performed by a current display page update part 44 and the currently displayed page number is regarded as a variable to increase the currently displayed page number by one. Then it is decided whether or not the variable exceeds a maximum value of the page. When the maximum value is exceeded, the variable, i.e., the currently displayed page number is put back to a page 1 and the page number updating process is ended. The window display which was automatically switched at constant time interval before, can be selected and specified.</p> |
