[求助]AE中最近点

<P>已知1个点和1条线，要获取该点离线最近的，线上的一点，engine中有这样的接口吗？</P>
<P>用<STRONG>HitTest </STRONG>的话好象没有返回点</P>
<P><STRONG>Public Function HitTest ( _</STRONG><BR>    <B>ByVal</B> <I>QueryPoint</I><B> As </B><a>IPoint</A>, _<BR>    <B>ByVal</B> <I>searchRadius</I><B> As </B><a>Double</A>, _<BR>    <B>ByVal</B> <I>geometryPart</I><B> As </B><a>esriGeometryHitPartType</A>, _<BR>    <B>ByVal</B> <I>hitPoint</I><B> As </B><a>IPoint</A>, _<BR>    <B>ByRef</B> <I>hitDistance</I><B> As </B><a>Double</A>, _<BR>    <B>ByRef</B> <I>hitPartIndex</I><B> As </B><a>Integer</A>, _<BR>    <B>ByRef</B> <I>hitSegmentIndex</I><B> As </B><a>Integer</A>, _<BR>    <B>ByRef</B> <I>bRightSide</I><B> As </B><a>Boolean</A> _<BR><B>) As</B> <a>Boolean</A></P>

ICurve.QueryPointAndDistance ?

谢谢了啊，那个好象可以，另外还找到一个IProximityOperator.<a href="ms-help://ESRI.EDNv9.2/esriGeometry/html/IProximityOperator_ReturnNearestPoint.htm" target="_blank" >ReturnNearestPoint</A>