How to determine if a form field was disabled by formatcondition

Hi all,

I maintain an application that was initially written by another guy.
The app makes use of conditionally formating of form fields.

So it came to a situation where the form field is ENABLED and VISIBLE but
at the same time disabled by conditionally formatting.

My question is now : Is there a simple way to determine, that a form field is disabled
by conditionally formatting (even if the property Enabled respondes TRUE)?

thx in advance and
Best regards,
dp.