| 摘要 |
<p>PURPOSE:To execute the processing of a window to be most necessary to a user in giving it a priority by selecting a plotting primitive to plot the contents of the window located above in giving it the priority at the time of changing the superposition of the windows. CONSTITUTION:A plotting priority switching means 40 dequeue a plotting primitive 60 in giving it the priority from a plotting primitive queue 50 corresponding to the window judged to be located above by the information of a superposition information area 30, and the primitive 60 is sent to a window contents plotting means 70. The window contents plotting means 70 develops the plotting primitive 60 to a graphic image, for example, a circle, and a line. A superposition processing means 80 plots the developed image onto a display 90 based on the information of the superposition information area 30. Thus, the processing of the window to be most necessary to the user can be executed in giving it the priority.</p> |
