HitPath和DisplayPath有啥区别

请教符大侠和其他大侠们,HitPath和DisplayPath有啥区别,经常看到两个类型的的指针有强制转换,莫不是同一个struct的别名?
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MicroStation迷

赞同来自: naier

在MDL帮助中说得比较清楚如下:
HitPaths include all of the information of Display_Paths . In addition to the full path of the element that caused the Hit, they hold:

the test point
the point on the element that is closest to the test point
the HitPriority of the hit
the HitSource of the hit
the HitDetail of the hit

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