怎样实现前面板的自动关闭？
时间：12-13
整理：3721RD
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u mean that before the Event Structure appear in LV6.1 ,u had make use of ol
d structure to realize this function
strong!!!!
u mean that before the Event Structure appear in LV6.1 ,u had make use of ol
d structure to realize this function
strong!!!!