[9fans] Special keys ...

[Philippe Anel <xigh@free.fr>]

Hello,

    In vncv source, it seems that some control key events are forwarded
to the server (see /sys/src/cmd/vnc/kbdv.c):

----------------------
        switch(r){
        case Kalt:
            alt = !alt;
            keyevent(v, Xalt, alt);
            break;
        case Kctl:
            ctl = !ctl;
            keyevent(v, Xctl, ctl);
            break;
        case Kshift:
            shift = !shift;
            keyevent(v, Xshift, shift);
            break;
----------------------

However, looking at /sys/src/9/pc/kbd.c, those key events are not sent 
through /dev/cons.
(Moreover values assigned to those key differ from those in keyboard.h).

I think we can't send those key event through /dev/cons without many 
changes to programs.

Therefore I'd like to:
1) add a control messages to /dev/consctl (ctlkeyon/ctlkeyoff) in 
port/devcons.c
2) modify pc/kbd.c to send KshiftDown, KshiftUp, ... when ctlkeyon has 
been sent to /dev/consctl
3) modify rio to handle those control messages (and to redirect read 
control key events only to the
    right windows).

Do you think it is the right way to patch vncv ?

    Philippe,