[lcdproc] keypresses

[Joris Robijn]

> If I use screen-exlusive nobody else can register this key all
> exclusive. Ok, I try to explan this with an example:
>  I've written a menu app which would use one key as exclusive (as
>  popup) und register all other needed keys as screen-exclusive. So the
>  app is sure these key does not clash with other apps which use this
>  keys in exclusive mode. I've also an app which logs all keypresses (not
>  action else) which would register all keys as shared (so the keys are
>  available for all other clients).

Ah yes. That works. However IMHO this is up to the administrator that 
writes the config file. He should know that he steals a key from other 
client if he wants to reserve it exclusively.

This is my option: reserved (exclusive) keys are passed to the 
reserving client. All non-reserved keys are passed to the 
active/visible client. 

Reserving screen-exclusive is then not needed anymore. A client also 
wont need to ask which keys are available. Just to keep things simple.

> 
> Yes, as explained these are exclusive.
> But you have to remember that you will loose one button for all other
> clients. If you have only three buttons than you can only drive _one_
> menu.

As said before we should assume a minimum of three keys to be able to 
work with menu's and screen rotation. Then you can use them like:

key0.4  name?    default            in menu
--------------------------------------------------------
A       Enter    next screen        Select option
B       Up       (to app /scroll)   move up
C       Down     (to app /scroll)   move down
D       Esc      Go to menu         Back out of menu

I intentionally used Up/Down not to switch screens, but to keep them 
available to scroll lists.
The Esc key should be exclusively bound to the menu-client. I think we 
all agree on that.

One other think to remember: there were ideas to let client be able to 
place things in menus. I'll kick of another thread about that.

Joris

-- 
 Joris Robijn <joris@robijn.net>
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 // To understand recursion, we must first understand recursion


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