Do the buttons actually appear on screen or are they not even on screen? If they aren't visible on screen, do they show up at all in the object browser?
If they are not on screen and are in the object browser, then yes, you can use FindChild to find the button objects and check properties to determine whether or not they are enabled or disabled. If, however, they don't even exist in the object browser, then it's not a matter of them being disabled but that they don't even exist. In this case, you would use FindChild to search for the object and check the result. If the result of the FindChild is null, then the buttons don't exist and are effectively disabled.
