[9fans] Special keys ...

[9fans] Special keys ...

[Philippe Anel]

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,

Re: [9fans] Special keys ...

[Russ Cox]

> 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 ?

No, it's not.

You can send those key events by typing Alt Z C, Alt Z S, and Alt Z A
(they are listed in /lib/keyboard) if you really need them.

Control and Shift are already handled properly when you type a control
or uppercase character, so the only time you really need them is to
type Alt or to do fancy mouse clicks with keyboard modifiers.

Plan 9 handles Alt for itself, so that you can type Unicode characters
into every program, not just ones that have been specially coded.

Russ

Re: [9fans] Special keys ...

[Philippe Anel]

Russ Cox a écrit :

>>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 ?
>>    
>>
>
>No, it's not.
>
>You can send those key events by typing Alt Z C, Alt Z S, and Alt Z A
>(they are listed in /lib/keyboard) if you really need them.
>
>Control and Shift are already handled properly when you type a control
>or uppercase character, so the only time you really need them is to
>type Alt or to do fancy mouse clicks with keyboard modifiers.
>
>  
>
I understand, but it doen't help.
I'd like to use the shift in combination with the arrow keys (for a vnc 
server running under windows)
to select some text.

    Philippe

>Plan 9 handles Alt for itself, so that you can type Unicode characters
>into every program, not just ones that have been specially coded.
>
>Russ
>
>
>  
>

Re: [9fans] Special keys ...

[Russ Cox]

> I understand, but it doen't help.
> I'd like to use the shift in combination with the arrow keys (for a vnc
> server running under windows)
> to select some text.

Alt Z S arrows Alt Z S.  Or use the mouse.

Russ