Disable all controls on all forms at the same time

I want to disable all controls on all forms after they are created.
Forms can have all different components on it labels.. drop down
lists.. buttons.. etc.
Now I have seen the DsiableControls command but it doesn't seem to
work for me.
can someone help me with this please? I don't think it is very hard to
do but it seems all that I have tried seemed to have failed :(

if anyone can shed some light I would appreaciate it greatly