为Document.BeginDwgOpen注册事件



Before DWG Open Event Handler

注册事件有先后

先DocumentCreateStarted事件
    Public Sub AddDocumentCreateStartedEvent()
        AddHandler Application.DocumentManager.DocumentCreateStarted, AddressOf Application_DocumentCreateStarted
    End Sub
再BeginDwgOpen事件
    Private Sub Application_DocumentCreateStarted(ByVal sender As Object, ByVal e As DocumentCollectionEventArgs)
        AddHandler e.Document.BeginDwgOpen, AddressOf Document_BeginDwgOpen
    End Sub
    Public Sub Document_BeginDwgOpen(ByVal senderObj As Object, _
                                ByVal docBegClsEvtArgs As DrawingOpenEventArgs)
    End Sub




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