Tooltips for insensitive widgets?

[Andreas Tille <tille physik uni-halle de>]

Hello,

it seems me that tooltips doesn't work for insensitive widgets.
I could imagine technical reasons for that behaviour, but I consider
it to be user friendly, if the widget tells the user *why* it is
insensitive and under which circumstances it will be sensitive.

Is there a way out here?

Kind regards

         Andreas.