World: r3wp

and when I define the third face, FUNCTION! is suddently undefined.

....
    data: 0
    row: 0
    source function! ;<--- defined
  ]
  list-view: BOX with [
    source function! ; <--- undefined
    hdr: hdr-btn: hdr-fill-btn: hdr-corner-btn:
    lst: lst-fld: scr: edt: pup: pdn: none
....

This works nice in a fresh console :

l: layout [ box with [source 'function!]]

tried that here too and works. what about 3-4 different faces in 
the same block?

the funny thing is that it's rendered undefined at the same point 
every time the code is loaded.

faces or facets ?

from the same console

l: layout [field text "toto" text-list  box with [source function!]]]
; works too

I guess a typo somewhere in your code, search for "function" in all.

>> do %/c/rebol/list-view.r
Script: "VID LIST-VIEW Face" (19-May-2006)
function!: function!
function!: undefined
** Script Error: function! has no value
** Where: stylize

** Near: color: make function! [] [select colors either fill ['even] 
['background]]
>> source function!
function!: function!
>>

found it

thanks

typo?

acquire-func: [] was turned into acquire-make function!: []

the joys of search and replace :-)

:-)

it was not where I expected it though. the make function! that came 
immediately after it seemed to work. oh, whatever :-)

make function! is an optimization compared to has, does and function, 
but not so much so compared to func. For now (REBOL 2) func is a 
simple wrapper around make function! that does nothing to its arguments 
- the only overhead added is that of a single function call.


You should also keep in mind that the syntax of make function! will 
be changing in REBOL 3, so all code that uses it will require some 
changes. The syntax of func, has, does and function will remain the 
same.

thanks, I'll keep that in mind

Hmmm. I thought they were basically the same. Good info.

Yes, I think it is not worth to use make function! as the 'speedup' 
could be noticable only if you are creating many functions in a loop 
at runtime. The functions are usu created only during loading of 
your script  so I don't see any optimization gain here.

usu=usually

I usually use func because it has the least overhead.

REBOL 2:
    make function! [args /local locals] [code]
REBOL 3:
    make function! [[args /local locals] [code]]

Not much of a change, really, but code using func will still work.

I think it is not worth to use make function! ...

 For anything less than a large app/framework I tend to agree. However, 
 in the later case the sum of many minor improvements can make a noticeable/measurable 
 improvement; but it all depends on what we are optimizing for (code, 
 load time, run time, memory, etc).

Does anybody have the Cyphre's View console script somewhere on it's 
HD ?
Can't find it in rebol.org

go to cyphre's rebsite

It's there.

Ah, thanks

Ashley: yes, this can be noticable for really large frameworks...say 
with ten thousands functions and more. There you can gain few miliseconds 
with this optimization during the load time.

few milliseconds during the load time? Is it even noticable? :-)

that was my point ;) Well if you create about 1milion functions then 
you can gain for about 50% of time on my CPU during code loading(4seconds 
instead of 8). But I haven't seen a Rebol project with so many functions.(but 
I'm not saying it cannot be developed ;))

Q: Is it possible to create an app that at the same time reads two 
data/ports.

F.ex. load an image from net and at the same time read data from 
GPS and display it on old image?

use async for this

a simple "aktiv: wait[port1 port2]" would be enough, with open/diirect 
or open/no-wait. or such. Never remember what these all do ;)

So am I right:

I need to define before ports:

gps-port:  open ....

url-port: open ... ??? ( read  doesnot fit here?)

user-port: ??? also is needed 

and then loop with wait [ gps-port url-port user-port ] [
	do I need here to catch what port it is 
	and do apropriate actions
]

Gone to Async group!

That's right, READ and WRITE are like a wrappers for OPEN and CLOSE. 
 eg. 
	READ url 
is equivalent to:
	OPEN port
	.... copy data here ....
	CLOSE port

some-port: open/no-wait/binary tcp://something
forever[
 active: wait REDUCE[ gps-port url-port user-port ] [
  new-data: copy active
 ; new-data is some #{...}
]

and decide what to do based on active,
 if same? avtive gps-port[..]

there are also some automatics which accosiate a function with a 
port, but i find this way easier to trace to get started.

and then here is async, which is a bit faster. Because /no-wait still 
does some waiting for error-checks. for async you need a library, 
by gabriele, romano or DocKimbel. Or deep knowledge.

perhpas a silly question, but how do I determine the name of a function 
mi currently in ?

As in, Im creating functions with a random-name and I would like 
to know in what function-name
im currently in... Is this possible ??? Like a 'SELF or 'ME ?

Not officially. IIRC there is some trick with triggering an error, 
somewhere on the ML.

That's not easy to figure out.

Where to find some documentation about systray in Rebol?

rebol.com

http://www.rebol.org/cgi-bin/cgiwrap/rebol/search.r?find=systray&form=yes

Thanks - already found!

What I am missing is what else words I could use for tray controls 
and messages received?
F.ex.
Can I activate tray meny un left click?
Is it possible to make submenus for systary icons?