Как можно ловить нажатие кнопки Open в диалоговом окне xlDialogOpen?

Sub Example()
With Application.FileDialog(msoFileDialogFolderPicker)
    .InitialFileName = 'D: '
    .Title = 'Выбор папки'
    .Show
    If .SelectedItems.Count = 1 Then sPath = .SelectedItems(1)
End With
End Sub

Private Type BROWSEINFO ' used by the function GetFolderName
    hOwner As Long
    pidlRoot As Long
    pszDisplayName As String
    lpszTitle As String
    ulFlags As Long
    lpfn As Long
    lParam As Long
    iImage As Long
End Type
 
Private Declare Function SHGetPathFromIDList Lib 'shell32.dll' _
    Alias 'SHGetPathFromIDListA' (ByVal pidl As Long, ByVal pszPath As String) As Long
Private Declare Function SHBrowseForFolder Lib 'shell32.dll' _
    Alias 'SHBrowseForFolderA' (lpBrowseInfo As BROWSEINFO) As Long
 
Function GetFolderName(Msg As String) As String
' returns the name of the folder selected by the user
Dim bInfo As BROWSEINFO, path As String, r As Long
Dim X As Long, pos As Integer
    bInfo.pidlRoot = 0& ' Root folder = Desktop
    If IsMissing(Msg) Then
        bInfo.lpszTitle = 'Select a folder.'
        ' the dialog title
    Else
        bInfo.lpszTitle = Msg ' the dialog title
    End If
    bInfo.ulFlags = &H1 ' Type of directory to return
    X = SHBrowseForFolder(bInfo) ' display the dialog
    ' Parse the result
    path = Space$(512)
    r = SHGetPathFromIDList(ByVal X, ByVal path)
    If r Then
        pos = InStr(path, Chr$(0))
        GetFolderName = Left(path, pos - 1)
    Else
        GetFolderName = ''
    End If
End Function
 
Sub TestGetFolderName()
Dim FolderName As String
    FolderName = GetFolderName('Select a folder')
    If FolderName = '' Then
'        MsgBox 'You didn't select a folder.'
    Else
        MsgBox 'You selected this folder: ' & FolderName
    End If
End Sub