ALLEGRO中的延时设置后,在拉线怎么没出现那个窗口呢？

[img]file:///C:/DOCUME~1/burt/LOCALS~1/Temp/_~U@8L8H_C2SQ`Q[]LXK2`4.jpg[/img]
就出现一个长度的窗口,请高手帮忙解释下.谢谢

You have to check your constraint management in your allgro . whether the trace had been attacted the constraint  or the definition of the constraint is wrong .

这个勾上：

楼上的这个设置我已经设好了的啊,就是不显示,只是显示长度.