Gtk::Button::set_sensitive strangeness

[Nickolai Dobrynin <dobrynin cs uwm edu>]

Anybody has experienced this before?  After making a button insensitive and
subsequently bringing it back to normal, the button's text label looks
different.  It looks "half-grayed", i.e. somewhere between the fully inactive
state and the normal one.  Only after I move the mouse over this button does
the text go back to normal.  In other words, there is apparently a third
state where the button is functionally active, but the text label looks
murky (until the mouse visits it).

My question is: is there any way to suppress this third state, so that the
button would either be completely grayed or completely active?

(I'm using gtkmm 2.4.11 on Gentoo).


Many thanks,

Nickolai