Curses ESC character and protected objects

[sandrobinetti@yahoo.com (Sandro Binetti)]

Hi group.

My UnixWare 7.1.1 software is written in ADA, compiled by GNAT 3.13a1,
and uses a binding to Unix curses library for I/O.

The keyboard ESC key has a strange behaviour. Normally, when the ESC
key is pressed, after a delay of about 0.5 sec, it's correctly managed
by the program (in this 0.5 sec delay curses waits for some other
character, in order to correctly manage esc sequences coming from
other keyboard keys).

But since the moment I introduced a few protected objects to my
software, the behaviour of the ESC key is completely changed: I have
to press the ESC key twice to make it go right (it seems that the
original 0.5 sec delay has become an infinite timeout ...)

I don't search for a solution to my problem, I only have wish to
understand the possible reason of this strange thing.

TIA, Sandro.