static void ed_PointMonitor(object sender, PointMonitorEventArgs e)
{
string blockInfo = ""; //用于存储块参照的信息：名称和个数
//获取命令行对象（鼠标监视事件的发起者），用于获取文档对象
Editor ed = (Editor)sender;
Document doc = ed.Document;
//获取鼠标停留处的实体
FullSubentityPath[] paths = e.Context.GetPickedEntities();
try
{
using (Transaction trans = doc.TransactionManager.StartTransaction())
{
//如果鼠标停留处有实体
if (paths.Length > 0)
{
//获取鼠标停留处的实体
FullSubentityPath path = paths[0];
BlockReference blockRef = trans.GetObject(path.GetObjectIds()[0], OpenMode.ForRead) as BlockReference;
if (blockRef != null)//如果鼠标停留处为块参照
{
//获取块参照所属的块表记录并以写的方式打开
//ObjectId blockId = blockRef.BlockTableRecord;
ObjectId blockId = path.GetObjectIds()[0];
//BlockTableRecord btr = trans.GetObject(blockId, OpenMode.ForRead) as BlockTableRecord;
long fid = 0, fno = 0, id = 0;
PublicMethod.GetInfoByObjid(blockId, ref id, ref fid, ref fno);
//获取属于同一块表记录的所有块参照
//ObjectIdCollection ids = btr.GetBlockReferenceIds(true, false);
//若鼠标停留处的块参照的块表记录与上一次的不同
if (preBlockId != blockId)
{
preBlockId = blockId;//重新设置块表记录名
}
string fnoName = default(string);
if (fno != 0)
{
fnoName = FeatureMapping.instance.features[fno.ToString()];
}
blockInfo += "FID : " + fid.ToString() + "\n设备类型 : " + fnoName;
}
}
trans.Commit();
}
}
catch (Autodesk.AutoCAD.Runtime.Exception ex)
{
ed.WriteMessage(ex.Message);
}
if (blockInfo != "")
{
e.AppendToolTipText(blockInfo);//在鼠标停留处显示提示信息
}
}