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Autodesk CAD實體集合另存為小工具

一，使用Autodesk CAD的二次開發技術ObjectARX（依賴與Autodesk CAD）。其中有c++和C#版，這里使用C#版。

二，生成的dll（C#）或arx（c++），必須被拷貝到ACAD的目錄下，且在ACAD中使用命令netload或appload加載生成的dll或arx，加載后我們在ACAD中輸入我們的命令即可。（下面小程序的命令是SaveDwg）

三，小程序的功能是選取ACAD中打開的dwg圖紙上的一些內容，然后保存為另一張dwg圖紙。

四，c#的代碼如下，比較簡單，只考慮了簡單的情況。

using System;

using System.Collections.Generic;

using System.Text;

using System.Windows.Forms;

using System.Collections;

using Autodesk.AutoCAD.Runtime;

using Autodesk.AutoCAD.DatabaseServices;

using Autodesk.AutoCAD.EditorInput;

using Autodesk.AutoCAD.ApplicationServices;

namespace SaveDwg

{

public class Program

{

[CommandMethod("SaveDwg")]

public void SaveDwg()

{

try

{

Database db = HostApplicationServices.WorkingDatabase;

SelectionSet selectionset;

ArrayList setList = new ArrayList();

Editor ed = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;

ed.WriteMessage("welcome to use the tool, it can save as a dwg file for your selected entities.\n");

PromptSelectionOptions selectionOptions = new PromptSelectionOptions();

PromptSelectionResult selectionResult;

selectionResult = ed.GetSelection(selectionOptions);

if (selectionResult.Status != PromptStatus.OK)

{

ed.WriteMessage("select error, please use command again.\n");

return;

}

else

{

selectionset = selectionResult.Value;

foreach (ObjectId id in selectionset.GetObjectIds())

{

DBObject ob = id.Open(OpenMode.ForRead);

Entity ent = ob as Entity;

if (ent != null)

{

Entity ent2 = ent.Clone() as Entity;

setList.Add(ent2);

ed.WriteMessage("copying entity is successful.\n");

}

ob.Close();

}

ed.WriteMessage("select and copy successfully.\n");

Database Db = new Database(true, false);

HostApplicationServices.WorkingDatabase = Db;

Autodesk.AutoCAD.DatabaseServices.TransactionManager manager = Db.TransactionManager;

using (Transaction transaction = manager.StartTransaction())

{

BlockTable table = (BlockTable)manager.GetObject(Db.BlockTableId, OpenMode.ForWrite);

BlockTableRecord record = (BlockTableRecord)manager.GetObject(Db.CurrentSpaceId, OpenMode.ForWrite);

foreach (Object obj in setList)

{

Entity ent = obj as Entity;

if (ent != null)

{

record.AppendEntity(ent);

//manager.AddNewlyCreatedDBObject(ent,true);

}

record.Close();

table.Close();

transaction.Commit();

}

SaveFileDialog dialog = new SaveFileDialog();

string filePath;

if (DialogResult.OK == dialog.ShowDialog())

{

filePath = dialog.FileName;

Db.SaveAs(filePath, DwgVersion.Current);

}

catch(System.Exception e)

{

MessageBox.Show("copy fail");

}

五，記得要reference ObjectARX程序需要的dll哦，如下圖：

六，想要脫離AutodeskCAD處理dwg圖紙，需要使用ObjectDBX技術，最新版改名為realdwg技術。

posted on 2007-05-24 15:04 夢在天涯閱讀(3205) 評論(7) 編輯收藏引用所屬分類: ARX/DBX

夢在天涯？你好，看了你的關于“Autodesk CAD實體集合另存為小工具”文章很興趣，因為我做模具設計，經常需要將一個圖中的單個圖拷貝給別人線割，如果有了你的那個savedwg，工作為方便好多，但是我又不會C++，能否將編譯后的arx文件發給我，另外，如果能給個視頻教程，本人將更感激!謝謝了!我的郵箱是：guoling0412@163.com 回復更多評論

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# re: Autodesk CAD實體集合另存為小工具 2007-05-24 15:08 夢在天涯

# re: Autodesk CAD實體集合另存為小工具 2007-05-25 15:24 ethan

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