Application.CurrentScope property (Visio)

Článek
09/13/2021

Determines the ID of the scope that causes an event to fire. Read-only.

Syntax

expression.CurrentScope

expression A variable that represents an Application object.

Return value

Long

Remarks

Returns visScopeIDInvalid (-1) if a scope isn't open. The scope ID could be an internal Microsoft Visio scope ID that corresponds to a Visio command or an external scope ID passed to an Automation client by the BeginUndoScope method.

The recipients of an event consider a scope open if the EnterScope event has fired but the ExitScope event has not fired.

To determine if the event queue firing is related to a particular scope internal to the application or one opened and closed by an Automation client, use the IsInScope property.

Example

This example shows how to use the CurrentScope property to determine the ID of the current scope.

Private WithEvents vsoApplication As Visio.Application 
Private lngScopeID As Long 
 
Public Sub ScopeActions() 
 
 Dim vsoShape As Visio.Shape 
 
 'Set the module level application variable to 
 'trap Application level events. 
 Set vsoApplication = Application 
 
 'Begin a scope, set the module level variable. 
 lngScopeID = Application.BeginUndoScope("Draw Shapes") 
 
 'Draw three shapes. 
 Set vsoShape = ActivePage.DrawRectangle(1, 2, 2, 1) 
 ActivePage.DrawOval 3, 4, 4, 3 
 ActivePage.DrawLine 4, 5, 5, 4 
 
 'Change a cell (which would trigger a cell changed event). 
 vsoShape.Cells("Width").Formula = 5 
 
 'End and commit this scope. 
 Application.EndUndoScope lngScopeID, True 
 
End Sub 
 
Private Sub vsoApplication_CellChanged(ByVal Cell As IVCell) 
 
 'Check to see if this cell change is the result of something 
 'happening within the scope. 
 If vsoApplication.IsInScope(lngScopeID) Then 
 Debug.Print Cell.Name & " changed in scope "; lngScopeID 
 End If 
 
End Sub 
 
Private Sub vsoApplication_EnterScope(ByVal app As IVApplication, _ 
 ByVal nScopeID As Long, _ 
 ByVal bstrDescription As String) 
 
 If vsoApplication.CurrentScope = lngScopeID Then 
 Debug.Print "Entering current scope " & nScopeID 
 Else 
 Debug.Print "Enter Scope " & bstrDescription & "(" & nScopeID & ")" 
 End If 
 
End Sub 
 
Private Sub vsoApplication_ExitScope(ByVal app As IVApplication, _ 
 ByVal nScopeID As Long, _ 
 ByVal strDescription As String, _ 
 ByVal bErrOrCancelled As Boolean) 
 
 If vsoApplication.CurrentScope = lngScopeID Then 
 Debug.Print "Exiting current scope " & nScopeID 
 Else 
 Debug.Print "ExitScope " & bstrDescription & "(" & nScopeID & ")" 
 End If 
 
End Sub

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