for(win = glk_window_iterate(NULL, NULL); win; win = glk_window_iterate(win, NULL)) {
if(win->type == wintype_TextGrid || win->type == wintype_TextBuffer)
g_signal_handler_unblock(win->widget, win->shutdown_keypress_handler);
}
for(win = glk_window_iterate(NULL, NULL); win; win = glk_window_iterate(win, NULL)) {
if(win->type == wintype_TextGrid || win->type == wintype_TextBuffer)
g_signal_handler_unblock(win->widget, win->shutdown_keypress_handler);
}