GtkObject::signal_handler_unblock
void signal_handler_unblock(int handler_id);
Releases a blocked signal handler allowing the function to be called when
the signal is emitted. handler_id is return value
from connect() or one of its sister
methods. Calling
signal_handler_unblock() on a signal
handler that was not previously blocked using signal_handler_block() has no effect.
See also: signal_handler_block()