World: r3wp

All words remember their values, unless you rebind the words to a 
different context. Whether a word is in a function body block or 
not doesn't matter.

warning! according to the documentation it is possible that in the 
future REBOL function words will be set to #[none!] or something 
else when the function returns

Anyone have an idea on how INFORM stops the event system and returns 
to the console after pressing a button, allowing it to return a value? 
I've been studying the source of SHOW-POPUP, HIDE-POPUP, INFORM and 
the various POPFACE-FEEL objects, but I can't figure out how it's 
done.

pressing a button = pressing a button in an INFORM

check the wake-event function

basically, inform does a new wait []

Starting at the top:
system/view/event-port/awake --->  system/view/wake-event

wake-event behaves differently when there is a popup open

it returns true (which makes wait [] return) when hide-popup has 
been called

Yes, wake-event calls system/view/popface/feel

inform calls show-popup which creates your new pop-face.

simple and almost useless tool :)

do http://bolek.techno.cz/reb/webtext.r

Hmm not bad.

Very cool bolek! With a few more fields for control of color and 
gradients, and the ability to save as an image, I would suggest it 
for inclusion as a Desktop entry with things like Font-lab and such.

Good idea, Gregg, I'll look into it! Hm, guess I should finish Texture-lab 
also... :)

Yes! That was a way cool app.

Updated version of TextureLab - do http://bolek.techno.cz/reb/texture-lab.r

What could be causing this error. I get it whither I encap or not.

** Script Error: trans-date has no value
** Where: switch
** Near: forall args [
    val: first args
    switch/default type?/word val [
        pair! [append pairs val]
        integer...


So far as I know I haven't touched this part of the script this is 
found in.

Is there anything wrong with this:


style dater txt bold right [trans-date/text: copy (to-string now/date)] 
48x24

or this:


        dater "T-Date:" trans-date: field 80x24 (to-string now/date) feel 
        [
            engage: func [face action event][
                if action = 'up [

                    lv-dat: request-date/date/offset (now/date) 315x30
                    if lv-dat <> none [
                        trans-date/text: copy to string! lv-dat
                        show trans-date
                    ]
                ]
            ]
            ;trans-date/text: copy (to-string now/date)
            show trans-date
        ]

I really have trouble debugging view scripts, especially long complicated 
ones.  Usually, I make only one of two changes, then run the script. 
That way I know what part of the code is actually causing the error. 
This time, however, after making some changes I had to take care 
of an unrelated problem before I had opportunity to test the script. 
Now several months later, I finally have time to test, but ... I 
can't remember what the last changes were.

Has anyone written a "How to debug REBOL/View" doc?

Are there any debug tools?

Your error says 'trans-date is not defined.

trans-date is defined in your layout .. so therefore must be reference 
before the layout is created if you have that error.

without seeing the relevant part it may be that the problem is that 
your style references a field which has not been defined yet.

Thank, Graham. I'm looking.

I was using the wrong version of the SDK.

Louis,  you're doing something strange there with the SHOW in the 
feel.

I couldn't find the error because it didn't exist in the code. :>)

Anton, you mean because there are two shows?

No, when you specify a feel spec block, you're actually doing something 
like this:

	feel: make feel [
1)		engage: func ...
2)		show trans-date
	]

You are making an object.

On line 1) you are replacing the value of the 'engage word with a 
new function value of your own.

On line 2) you are simply doing some code. So this code executes 
at the time of the object creation.

OK, how do I do it right?

Looking at the code I assume what you want to do is initialise the 
text facet and make sure it's shown the first time the display is 
shown.

Well, you shouldn't have to SHOW the first time - that should be 
taken care of by VIEW or the SHOW that shows your whole layouted 
face in which you have your dater and trans-date field.

So that just leaves setting the text correctly the first time. And 
you are already doing that.

So just remove those two final lines from the feel spec.

By the way, to-string already makes a copy.
>> same? (to string! str: "example") str
== false

I'm learning a lot tonight. Thanks.

Welcome.

I have a question WRT changing the text of a shown label. I use a 
way where the layout of my GUI is done at startup-time once. Now 
I need to change the text of some labels at run-time and I don't 
want to do the following:
	- name each label that needs to be updated.

 - write a function that changes the TEXT word and shows the widget


I would like to use a word in the initial context that keeps a reference 
to the text (or function returning the text) which gets reevaluated 
if a SHOW is used.


Do I have to write an own style that supports this or is there a 
simpler way?

an easy way is to keep all labels in a panel and then traverse the 
pane and set the label texts on a label.

if your panel consists of multiple different types of faces, you 
can filter on 'style

How about this:

data: ["hello" "there" "robert"]

spec: copy []
foreach string data [
	append spec compose [label 100 (string)]
]

view window: layout append spec [
	btn "change original strings" [
		insert clear data/1 "happy"
		insert clear data/2 "to be"
		insert clear data/3 "changed"
		show window
	]
]

You have to make sure the initial labels are large enough for your 
longest strings. Of course we can stylize label so that it resizes 
automatically, but maybe you don't need that.

Henrik's way can be helped using SET-FACE, I think. (I haven't used 
this feature yet.)
Have a look in svv/vid-styles/panel/access 'set-face*

Anton, ah the insert clear method... I missed this one. I think that's 
the way to go. I'll check this out. Thanks.

Hmm... one more. Let's I have:
	label-text: "The current value is ?"

and I know want to change the ? dynamically. After first replacement 
the ? is gone. So I need some way to keep the source version. Or 
first insert the source version, than replace and show.