外部参照定義をアタッチ解除して、外部参照を図面から完全に除去できます。また、個々の外部参照インスタンスを削除することもできます。外部参照定義をアタッチ解除すると、その外部参照に関連付けられたすべての従属シンボルが削除されます。外部参照のすべてのインスタンスが図面から削除された場合、AutoCAD は次回図面が開かれたときに外部参照定義を除去します。
外部参照をアタッチ解除するには、DetachXref メソッドを使用します。 ネストした外部参照をアタッチ解除することはできません。
次の例では、外部参照をいったんアタッチしてから、アタッチ解除します。この例では、Sample フォルダにある Exterior Elevations.dwg ファイルを使用します。このイメージが存在しない場合や、別のフォルダにある場合は、有効なパスおよびファイル名を指定してください。
Imports Autodesk.AutoCAD.Runtime
Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.Geometry
<CommandMethod("DetachingExternalReference")> _
Public Sub DetachingExternalReference()
' Get the current database and start a transaction
Dim acCurDb As Autodesk.AutoCAD.DatabaseServices.Database
acCurDb = Application.DocumentManager.MdiActiveDocument.Database
Using acTrans As Transaction = acCurDb.TransactionManager.StartTransaction()
' Create a reference to a DWG file
Dim PathName As String = "C:\AutoCAD\Sample\Sheet Sets\Architectural\Res\Exterior Elevations.dwg"
Dim acXrefId As ObjectId = acCurDb.AttachXref(PathName, "Exterior Elevations")
' If a valid reference is created then continue
If Not acXrefId.IsNull Then
' Attach the DWG reference to the current space
Dim insPt As New Point3d(1, 1, 0)
Using acBlkRef As New BlockReference(insPt, acXrefId)
Dim acBlkTblRec As BlockTableRecord
acBlkTblRec = acTrans.GetObject(acCurDb.CurrentSpaceId, OpenMode.ForWrite)
acBlkTblRec.AppendEntity(acBlkRef)
acTrans.AddNewlyCreatedDBObject(acBlkRef, True)
End Using
MsgBox("The external reference is attached.")
acCurDb.DetachXref(acXrefId)
MsgBox("The external reference is detached.")
End If
' Save the new objects to the database
acTrans.Commit()
' Dispose of the transaction
End Using
End Sub
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
[CommandMethod("DetachingExternalReference")]
public void DetachingExternalReference()
{
// Get the current database and start a transaction
Database acCurDb;
acCurDb = Application.DocumentManager.MdiActiveDocument.Database;
using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
{
// Create a reference to a DWG file
string PathName = "C:\\AutoCAD\\Sample\\Sheet Sets\\Architectural\\Res\\Exterior Elevations.dwg";
ObjectId acXrefId = acCurDb.AttachXref(PathName, "Exterior Elevations");
// If a valid reference is created then continue
if (!acXrefId.IsNull)
{
// Attach the DWG reference to the current space
Point3d insPt = new Point3d(1, 1, 0);
using (BlockReference acBlkRef = new BlockReference(insPt, acXrefId))
{
BlockTableRecord acBlkTblRec;
acBlkTblRec = acTrans.GetObject(acCurDb.CurrentSpaceId, OpenMode.ForWrite) as BlockTableRecord;
acBlkTblRec.AppendEntity(acBlkRef);
acTrans.AddNewlyCreatedDBObject(acBlkRef, true);
}
Application.ShowAlertDialog("The external reference is attached.");
acCurDb.DetachXref(acXrefId);
Application.ShowAlertDialog("The external reference is detached.");
}
// Save the new objects to the database
acTrans.Commit();
// Dispose of the transaction
}
}
Sub DetachingExternalReference()
' Define external reference to be inserted
Dim xrefInserted As AcadExternalReference
Dim insertionPnt(0 To 2) As Double
Dim PathName As String
insertionPnt(0) = 1
insertionPnt(1) = 1
insertionPnt(2) = 0
PathName = "C:\AutoCAD\Sample\Sheet Sets\Architectural\Res\Exterior Elevations.dwg"
' Add the external reference
Set xrefInserted = ThisDrawing.ActiveLayout.Block. _
AttachExternalReference(PathName, "Exterior Elevations", insertionPnt, 1, 1, 1, 0, False)
MsgBox "The external reference is attached."
' Detach the external reference definition
Dim name As String
name = xrefInserted.name
ThisDrawing.Blocks.Item(name).Detach
MsgBox "The external reference is detached."
End Sub