Undo Deleted Note and Fire Undo Pre- and Post-notify Events Example (VBA)

This example demonstrates firing Undo pre- and post-notifications in a drawing document.

'---------------------------------------------------------------------------
' Preconditions:
' 1. Open install_dir\samples\tutorial\AutoCAD\7550-021.slddrw.
' 2. Copy and paste Main into the main module.
' 3. Click Insert > Class Module and copy and paste Class1 into that module.
'
' Postconditions:
' 1. Selects and deletes the note in Drawing View1.
' 2. Undoes the deleted note.
' 3. Fires pre-notification event indicating that an undo action is about to 
'    occur and fires post-notification event indicating that an undo 
'    action occurred.
' 4. Click OK to close each message box.
'
' NOTE: Because the drawing is used elsewhere, do not save changes.
'---------------------------------------------------------------------------
'Main
Option Explicit

Dim swApp As SldWorks.SldWorks
Dim swModel As SldWorks.ModelDoc2
Dim swModelDocExt As SldWorks.ModelDocExtension
Dim swDrawing As SldWorks.DrawingDoc
Dim boolstatus As Boolean
Dim swDrawingEvents As Class1

Sub main()

    Set swApp = Application.SldWorks
    Set swModel = swApp.ActiveDoc
    Set swModelDocExt = swModel.Extension
    

    ' Event notification
    Set swDrawing = swModel
    Set swDrawingEvents = New Class1
    Set swDrawingEvents.swDrawing = swApp.ActiveDoc
    

    ' Activate the drawing view that contains
    ' the note you want to delete
    boolstatus = swDrawing.ActivateView("Drawing View1")
    boolstatus = swModelDocExt.SelectByID2("DetailItem66@Drawing View1", "NOTE", 0.357212931256279, 0.178674480463097, 0, False, 0, Nothing, 0)
    

    ' Delete the selected note
    swModel.EditDelete
    

    ' Undo deletion of note
    ' Pre- and post-notifications
    ' are fired
    swModel.EditUndo2 1
    

    ' Rebuild the drawing
    swModel.ForceRebuild3 True

End Sub

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'Class1
Option Explicit

Public WithEvents swDrawing As SldWorks.DrawingDoc
 

Private Function swDrawing_UndoPostNotify() As Long
'Display message after undo action occurs
    MsgBox "An Undo post-notification event has been fired."
End Function

Private Function swDrawing_UndoPreNotify() As Long
'Display message after undo action occurs
    MsgBox "An Undo pre-notification event has been fired."
End Function

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