Question

主要用到函数说明：

函数名：IMxDrawSelectionSet::CurrentSelect

得到当前已经选择的实体。详细说明如下：

参数	说明
filterData	过滤条件

c#中使用如下：

private void CurrentSelect()
{
    //创建选择集
    MxDrawSelectionSet ss = new MxDrawSelectionSet();
    //创建过滤对象
    MxDrawResbuf spFilte = new MxDrawResbuf();
    ss.CurrentSelect(spFilte);
    int i = 0;
    for (; i < ss.Count; i++)
    {
        MxDrawEntity ent = ss.Item(i);
               
        if (ent.ObjectName == "McDbLine")
        {
            MxDrawLine line = (MxDrawLine)ent;
            // 是个直线。
            MxDrawPoint spt = (MxDrawPoint)line.StartPoint;
            MxDrawPoint ept = (MxDrawPoint)line.EndPoint;
            MessageBox.Show(spt.x.ToString());
        }
        else if (ent.ObjectName == "McDbPolyline")
        {
            MxDrawPolyline polyline = (MxDrawPolyline)ent;
            // 是个多义线.
            int j = 0;
            // 循环，得到端点坐标
            for (j = 0; j < polyline.NumVerts; j++)
            {
                MxDrawPoint pt = polyline.GetPointAt(j);
                MessageBox.Show(pt.x.ToString());
            }
        }
    }
}