[编程交流] AcadPViewport2 - Deleting item

'Returns true if the cleanup was successfully; false if it wasn'tPublic Function cleanupDWG() As BooleanOn Error GoTo ErrorFound   'Variables   'Various objects/array of objects   Dim objAcadObject As AcadObject   Dim objLayout As AcadLayout   'Dim objEntities() As AcadEntity   Dim objEntities(0 To 0) As AcadEntity   'Add the two selection sets you will be using   Dim ss1 As AcadSelectionSet, ssT As AcadSelectionSet   Set ss1 = ThisDrawing.SelectionSets.Add("ss1")   Set ssT = ThisDrawing.SelectionSets.Add("ssT")   'Points defining the model space points of each viewport   Dim arrPoints As Variant: arrPoints = Array(arrPoints, arrPoints)   Dim lowerRightP(2) As Double, upperLeftP(2) As Double   'Various counters   Dim purgeCount As Integer, vPortsCount As Integer, ssTEntityCount As Integer   'Boolean defining if you are inside the first viewport in a layout (the paperspace itself)   Dim boolFirstOne As Boolean: boolFirstOne = True   'Used for filtering only items inside model space   Dim FilterData(0) As Variant: Dim DataValue As Variant   FilterData(0) = 0: DataValue = FilterData   Dim FilterType(0) As Integer: Dim Groupcode As Variant   FilterType(0) = 67: Groupcode = FilterType   'Make sure the dynmode is off   Call ThisDrawing.SetVariable("DYNMODE", False)   'Make sure that the UCS is set to World inside model space   ThisDrawing.ActiveSpace = acModelSpace   ThisDrawing.SendCommand "UCS WORLD "      'Go to paper space   ThisDrawing.ActiveSpace = acPaperSpace   'Loop through all the layouts   For Each objLayout In ThisDrawing.Layouts       'Make sure you aren't in model space       If objLayout.Name  "Model" Then           'Set the layout to be the active layout           ThisDrawing.ActiveLayout = objLayout           'Make sure you are inside paper space before you zoom, then zoom           ThisDrawing.MSpace = False           ZoomExtents           'Loop through all the objects           For Each objAcadObject In objLayout.Block               'If the object name is an MVIEW (IAcadPViewPort2 in VBA terms)               If TypeName(objAcadObject) = "IAcadPViewport" Or TypeName(objAcadObject) = "IAcadPViewport2" Then                   'The first one you find will be the actual layout, so skip it                   If boolFirstOne = True Then                       'Set the first viewport found flag to false for the rest of this layout                       boolFirstOne = False                   Else                       'Get the points for the selection                       Call getCrossingBoxPoints(objAcadObject, lowerRightP, upperLeftP)                       'Store those points for later use                       ReDim Preserve arrPoints(vPortsCount + 1)                       arrPoints(vPortsCount) = lowerRightP: arrPoints(vPortsCount + 1) = upperLeftP                       vPortsCount = vPortsCount + 2                   End If               End If           Next           'Re-set the first viewport found flag to true for the next layout           boolFirstOne = True           'Go outside of model space inside paperspace           ThisDrawing.MSpace = False       End If   Next   'Go to model space and zoom extents so the selection set will work properly   ThisDrawing.ActiveSpace = acModelSpace   ZoomExtents   'Select everything inside modelspace in a selection set   With ThisDrawing.Utility       'Selects everything in model space       ss1.Select acSelectionSetAll, , , Groupcode, DataValue   End With   'If any viewports were found...   If Not IsEmpty(arrPoints(0)) Then       'Loop through the viewport points that were found       For vPortsCount = 0 To UBound(arrPoints) Step 2           'Clear the previous selection (if there was one)           ssT.Clear           'Get selection set for the viewport using the points found earlier           ssT.Select acSelectionSetCrossing, arrPoints(vPortsCount), arrPoints(vPortsCount + 1), Groupcode, DataValue           If ssT.Count > 0 Then               'Make space for all the entities in the array               'ReDim objEntities(ssT.Count - 1)                              For ssTEntityCount = 0 To ssT.Count - 1                   Set objEntities(0) = ssT(ssTEntityCount)                   'Remove each object individually from the selection set                   ss1.RemoveItems objEntities               Next                              'No longer trying to remove all of selection set at once; causes problems               'when trying to remove objects that were previously removed               'ss1.RemoveItems objEntities           End If       Next              'Delete everything that is still selected       ss1.Erase   End If      'Delete the selection sets from the drawing   ss1.Delete   ssT.Delete   'Go to model space   ThisDrawing.ActiveSpace = acModelSpace   'zoom extents   ZoomExtents      'Leave the first non modelspace layout to be the current one   For Each objLayout In ThisDrawing.Layouts       If objLayout.Name  "Model" Then           ThisDrawing.ActiveLayout = objLayout           Exit For       End If   Next   'If you get here, you have succedded.  Return true   cleanupDWG = TrueExit FunctionErrorFound:   'If the error is because you are trying to remove objects from the   'selection set that were already removed, then continue   If Err.Number = -2147467259 Then       Resume Next   'If the error is because of any other reason, then return false   Else       cleanupDWG = False   End IfEnd Function'Retrieves the model space lower right and upper left points of the viewportPrivate Sub getCrossingBoxPoints(vp As AcadPViewport, lowerRightP() As Double, upperLeftP() As Double)On Error GoTo ErrorFound   'Variables   Dim lowerLeftP As Variant, upperRightP As Variant   Dim paperViewHeight As Double, paperViewWidth As Double      'Go inside model space inside paper space   ThisDrawing.MSpace = True   'Make sure that the UCS is set to World inside the viewport    ThisDrawing.SendCommand "UCS WORLD "       'Set the viewport to the current view port   ThisDrawing.ActivePViewport = vp                           'Get the min and max lower left and upper right points in paper space terms   Call vp.GetBoundingBox(lowerLeftP, upperRightP)   'Translate the paper space points to model space points   lowerLeftP = ThisDrawing.Utility.TranslateCoordinates(lowerLeftP, acPaperSpaceDCS, acDisplayDCS, False)   upperRightP = ThisDrawing.Utility.TranslateCoordinates(upperRightP, acPaperSpaceDCS, acDisplayDCS, False)   lowerLeftP = ThisDrawing.Utility.TranslateCoordinates(lowerLeftP, acDisplayDCS, acWorld, False)   upperRightP = ThisDrawing.Utility.TranslateCoordinates(upperRightP, acDisplayDCS, acWorld, False)   'Set the lower right and upper left points of the view as they would be in model space   lowerRightP(0) = upperRightP(0)   lowerRightP(1) = lowerLeftP(1)   upperLeftP(0) = lowerLeftP(0)   upperLeftP(1) = upperRightP(1)   'Exit model space inside paper space   ThisDrawing.MSpace = False   Exit SubErrorFound:   'Call HandleErrors(Err, "getCrossingBoxPoints")End Sub