How to stop VBA code running?

Question

Say I have a button embedded into my spreadsheet that launches some VBA function.

Private Sub CommandButton1_Click()
    SomeVBASub
End Sub

Private Sub Some         


        

Answer 1

Or, if you want to avoid the use of a global variable you could use the rarely used .Tag property of the userform:

Private Sub CommandButton1_Click()
    Me.CommandButton1.Enabled = False 'Disabling button so user cannot push it
                                      'multiple times
    Me.CommandButton1.caption = "Wait..." 'Jamie's suggestion
    Me.Tag = "Cancel"
End Sub

Private Sub SomeVBASub
    If LCase(UserForm1.Tag) = "cancel" Then
        GoTo StopProcess
    Else
        'DoStuff
    End If

Exit Sub
StopProcess:
    'Here you can do some steps to be able to cancel process adequately
    'i.e. setting collections to "Nothing" deleting some files...
End Sub