cad.net 图元反应器+图元事件

目录

• cad内置的图元事件

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cad内置的图元事件

using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Runtime;
using Acap = Autodesk.AutoCAD.ApplicationServices.Application;
using Autodesk.AutoCAD.Geometry;
using System;

namespace JoinBox;

public class Command_Test_MTextModified {

    [CommandMethod(nameof(CTest_MTextModified), 
    CommandFlags.Modal | CommandFlags.UsePickSet | CommandFlags.DocExclusiveLock)]
    public void Test_MTextModified() {
        var db = HostApplicationServices.WorkingDatabase;//当前的数据库   
        //using Acap.DocumentManager.MdiActiveDocument.LockDocument(); //锁文档  
        using var tr = db.TransactionManager.StartTransaction(); 
        for (int i = 0; i < 10; i++) {
            using var btr = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
            var mText = new MText {
                Contents = "文字" + i.ToString(),
                TextHeight = 3,
                TextStyleId = db.Textstyle,
                Location = new Point3d(i, i, 0),
            }; 
            btr.AppendEntity(mText);
            tr.AddNewlyCreatedDBObject(mText, true);
            mText.Modified += MText_Modified; //要加在这里,如果加在提交之前,所有的事件将指向第一个图元..
        }
        tr.Commit();
    }

    void MText_Modified(object sender, EventArgs e) {
        Editor ed = Acap.DocumentManager.MdiActiveDocument.Editor;
        ed.WriteMessage("\n测试" + ((MText)sender).Text);
    }
}

(完)