[gtkada] key_release_event

[manuel.op.de.coul at eon-benelux.com]

Yes, I tried it and it didn't work. I wanted to be
able to play tones with the keyboard so I used both the
key press and key release, but releases were not signalled.
For only to handle Enter presses, use the "activate" signal.
Then you don't need to compare the key value. If you need
to respond to more keys instead, you should use the
"key_press_event".
I hope it gets fixed with 2.2.

Manuel