才鸟再论坛上发布的动态显示扩展数据的程序，有些人反应不能调试过去，并且必须要加载DNA，经常报错，今天有时间对其进行了改写，测试运行正常。
代码 using System; using System.Text; using Autodesk.AutoCAD.ApplicationServices; using Autodesk.AutoCAD.Runtime; using Autodesk.AutoCAD.DatabaseServices; using Autodesk.AutoCAD.EditorInput; // using DNA; public class Class1{ Editor ed = Application.DocumentManager.MdiActiveDocument.Editor; Database db = HostApplicationServices.WorkingDatabase; string xdatas; [CommandMethod( " DisplayText " )] public void DisplayText() { ed.Rollover += new RolloverEventHandler(ed_Rollover); ed.PointFilter += new PointFilterEventHandler(ed_PointFilter); } void ed_PointFilter( object sender, PointFilterEventArgs e) { e.Result.ToolTipText = xdatas; } void ed_Rollover( object sender, RolloverEventArgs e) { xdatas = null ; using (Transaction trans = db.TransactionManager.StartTransaction()) { ObjectId[] ids = e.Highlighted.GetObjectIds(); if (ids.GetLength( 0 ) > 0 ) { DBObject ob = (DBObject) trans.GetObject(ids[ 0 ], OpenMode.ForRead); ResultBuffer xDataOut = ob.XData; if (xDataOut == null ) { return ; } foreach (TypedValue xdata in xDataOut) { xdatas += string .Format( " \nTypeCode={0},Value={1} " , xdata.TypeCode, xdata.Value); } } } }}
转载于:https://www.cnblogs.com/chinaHunk/articles/1890522.html
