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VB.NET中将圆转成多段线 AutoCAD命令打印图形到屏幕[Kean]
未知 AutoCAD直线删除保护和对象删除监视   [ 日期:2011-12-25 ]   [ 来自:本站原创 ]  HTML
原文地址:
http://through-the-interface.typepad.com/through_the_interface/2011/12/adding-an- ... cad-objects-from-being-erased-using-net.html

Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.EditorInput
Imports Autodesk.AutoCAD.Runtime
Namespace WeLikeToBlock
    Public Class Commands
        Public Class EraseOverrule
            Inherits ObjectOverrule
            Public Overrides Sub [Erase](ByVal dbObject As DBObject, ByVal erasing As Boolean)
                MyBase.[Erase](dbObject, erasing)
                Throw New Autodesk.AutoCAD.Runtime.Exception(ErrorStatus.NotApplicable)
            End Sub
        End Class
        Shared _theOverrule As EraseOverrule = Nothing
        <CommandMethod("PER")> _
        Public Shared Sub PreventErase()
            Dim ed As Editor = Application.DocumentManager.MdiActiveDocument.Editor
            If _theOverrule Is Nothing Then
                _theOverrule = New EraseOverrule()
                ObjectOverrule.AddOverrule(RXObject.GetClass(GetType(Line)), _theOverrule, False)
                ObjectOverrule.Overruling = True
                ed.WriteMessage(vbLf & "Preventing erasure of lines.")
                ed.WriteMessage(vbLf & "直线防删保护.")
            Else
                ObjectOverrule.RemoveOverrule(RXObject.GetClass(GetType(Line)), _theOverrule)
                _theOverrule.Dispose()
                _theOverrule = Nothing
                ed.WriteMessage(vbLf & "No longer preventing erasure of lines.")
                ed.WriteMessage(vbLf & "关闭直线防删保护.")
            End If
        End Sub
    End Class
End Namespace

Namespace WeLikeToWatch
    Public Class Commands
        Public Class EraseOverrule
            Inherits ObjectOverrule
            Public Overrides Sub [Erase](ByVal dbObject As DBObject, ByVal erasing As Boolean)
                MyBase.[Erase](dbObject, erasing)
                Dim Temp As String
                If erasing = True Then
                    Temp = "删除"
                Else
                    Temp = "撤销删除"
                End If
                Application.DocumentManager.MdiActiveDocument.Editor.WriteMessage(vbCrLf & "{0} {1} {2}.", dbObject.GetType.Name, "(" & dbObject.ObjectId.ToString & ")", Temp)
            End Sub
        End Class
        Shared _theOverrule As EraseOverrule = Nothing
        <CommandMethod("WER")> _
        Public Shared Sub WatchErasure()
            Dim ed As Editor = Application.DocumentManager.MdiActiveDocument.Editor
            If _theOverrule Is Nothing Then
                _theOverrule = New EraseOverrule()
                ObjectOverrule.AddOverrule(RXObject.GetClass(GetType(DBObject)), _theOverrule, False)
                ObjectOverrule.Overruling = True
                ed.WriteMessage(vbLf & "Watching erasure of database objects.")
                ed.WriteMessage(vbLf & "对象删除监视.")
            Else
                ObjectOverrule.RemoveOverrule(RXObject.GetClass(GetType(DBObject)), _theOverrule)
                _theOverrule.Dispose()
                _theOverrule = Nothing
                ed.WriteMessage(vbLf & "No longer watching erasure of database objects.")
                ed.WriteMessage(vbLf & "关闭对象删除监视.")
            End If
        End Sub
    End Class
End Namespace


vb 2005 AutoCAD2010

【直线删除保护和对象删除监视.rar】点击下载此文件

[本日志由 tiancao1001 于 2011-12-25 09:22 PM 编辑]


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