Change layer viewport properties

andre_adc-dao — Wed, 06 Mar 2013 19:37:09 GMT

Hi everybody,

I'm looking to find a way to change layer properties by viewport. I know how to freeze/thaw layer by viewport but not changing their properties. I'm using VB .Net.

Anybody have an idea?

Regards

André

Re: Change layer viewport properties

BlackBox_ — Sun, 10 Mar 2013 02:05:49 GMT

Have you considered LayerViewportProperties?

This thread may also be of use.

Re: Change layer viewport properties

andre_adc-dao — Tue, 12 Mar 2013 18:07:10 GMT

Thank you very much for your hint and link to the thread.

For your information, here the sub I created:

This sub overides layer settings in all viewport except the current one. The overrides properties came from a layer "template". (A layer with the properties to apply as overrides).

Public Sub SetLayerOverridesInOtherViewPort(ByVal LayerName As String, ByVal LayerNameTemplate As String)

        Dim acDoc As Document = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument
        Dim acCurDb As Database = acDoc.Database

        Using doclock As DocumentLock = acDoc.LockDocument

            '' Start a transaction
            Using acTrans As Transaction = acCurDb.TransactionManager.StartTransaction()
                'Define variables
                Dim acLyrTbl As LayerTable
                Dim CVPort As Viewport
                Dim LVPO As LayerViewportProperties

                'Get current viewport
                CVPort = DirectCast(acTrans.GetObject(acDoc.Editor.CurrentViewportObjectId, OpenMode.ForRead), Viewport)

                'Get current layout name
                Dim layoutDict As DBDictionary = CType(acTrans.GetObject(acCurDb.LayoutDictionaryId, OpenMode.ForRead), DBDictionary)
                Dim strCurrentLayoutName As String = LayoutManager.Current.CurrentLayout

                'Get layer table object
                acLyrTbl = acTrans.GetObject(acCurDb.LayerTableId, OpenMode.ForRead)
                If acLyrTbl.Has(LayerNameTemplate) = True Then
                    'Get layer template object
                    Dim acLyrTemplateTblRec As LayerTableRecord
                    acLyrTemplateTblRec = acTrans.GetObject(acLyrTbl(LayerNameTemplate), OpenMode.ForRead)
                    'Scan all viewport
                    For Each entry As DBDictionaryEntry In layoutDict
                        If entry.Key <> "Model" Then
                            Dim lay As Layout = CType(acTrans.GetObject(entry.Value, OpenMode.ForRead), Layout)
                            If lay.LayoutName.ToUpper <> strCurrentLayoutName.ToUpper Then
                                SetCurrentLayoutTab(lay.LayoutName)
                                Dim nCount As Integer = 0
                                For Each vpid As ObjectId In lay.GetViewports
                                    nCount = nCount + 1
                                    Dim vp As Viewport = CType(acTrans.GetObject(vpid, OpenMode.ForWrite), Viewport)
                                    If vp.Handle <> CVPort.Handle Then
                                        If nCount > 1 Then
                                            'acLyrTbl = acTrans.GetObject(acCurDb.LayerTableId, OpenMode.ForRead)
                                            For Each acObjId As ObjectId In acLyrTbl
                                                Dim acLyrTblRec As LayerTableRecord
                                                acLyrTblRec = acTrans.GetObject(acObjId, OpenMode.ForRead)
                                                If acLyrTblRec.Name.ToUpper = LayerName.ToUpper Then
                                                    Dim LaagTabelRec As LayerTableRecord = acTrans.GetObject(acLyrTblRec.ObjectId, OpenMode.ForRead)
                                                    LVPO = LaagTabelRec.GetViewportOverrides(vp.Id)
                                                    LVPO.Color = acLyrTemplateTblRec.Color
                                                    LVPO.LinetypeObjectId = acLyrTemplateTblRec.LinetypeObjectId
                                                    LVPO.LineWeight = acLyrTemplateTblRec.LineWeight
                                                    Exit For
                                                End If
                                            Next
                                        End If
                                    End If
                                Next
                            End If
                        End If
                    Next
                    acTrans.Commit()
                    SetCurrentLayoutTab(strCurrentLayoutName)
                    acDoc.Editor.Regen()
                End If

            End Using
        End Using

    End Sub

I also include a sub to set the current layout tab:

Public Sub SetCurrentLayoutTab(ByVal LayoutName As String)
        Dim acDoc As Document = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument
        Dim acCurDb As Database = acDoc.Database
        Using doclock As DocumentLock = acDoc.LockDocument
            Using acTrans As Transaction = acCurDb.TransactionManager.StartTransaction()
                Try
                    Dim acLayoutMgr As LayoutManager
                    acLayoutMgr = LayoutManager.Current
                    acLayoutMgr.CurrentLayout = LayoutName
                    acTrans.Commit()
                Catch ex As Autodesk.AutoCAD.Runtime.Exception
                    Autodesk.AutoCAD.ApplicationServices.Application.ShowAlertDialog(ex.Message & vbCr & ex.StackTrace)
                    acTrans.Abort()
                End Try
            End Using
        End Using

    End Sub

Regards

André

Re: Change layer viewport properties

BlackBox_ — Tue, 12 Mar 2013 21:25:54 GMT

You're welcome; I'm happy to help.

As one of many things... If you implement the appropriate Imports directive (using in C#), you'll enable Type references without Namespace qualification... As one example, consider:

Imports acApp = Autodesk.AutoCAD.ApplicationServices.Application

Public Sub GetCTab()
	acApp.GetSystemVariable("CTAB")
End Sub

Public Sub SetCTab(ByVal layoutName As String)
	acApp.SetSystemVariable("CTAB", layoutName)
End Sub

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