World: r3wp

If you're going to try and encapsulate inside a context, why not 
provide the method to update the gui inside the context?

BTW, if you're hiding field names then my experience is that you 
need to use closures instead of functions.

Thank you, Graham, for the continued feedback.  I'm ashamed to say 
I don't even understand your last comment - this newbie will have 
to go research "closures".


Your previous comment - that sounds like a good approach - I'll have 
to learn more to do that.  I can only learn something by trying to 
use it to solve real problems; the bad news for me is that in this 
case I'm new to GUIs, REBOL and RebGUI.

If you search on closures in this thread it will explain the issue 
it solves

Get something that's simple working first ... then add complexity. 
I tend to "encapsulate" my GUIs in functions with generic widget 
identifiers, such as:

show-add-user: make function! [/local f1 f2 f3] [
	display "Add User" [
		after 2
		text ...		f1: field
		text ...		f2: field
		text ...		f3: field
		bar
		reverse
		button [f1/text: ...]
		do [...]
	]
]


If you can get this working then the problem shifts from being a 
RebGUI problem to a context problem (which more people can assist 
with in the Core or REBOL2 groups).

Ashley - thanks for pointing me in the right direction!

hi, rebgui 1.1.8 don't work with rebol 2.7.7 for linux !!!!! segment 
fault !!!!

ashley, do you have a fixe for it , regards

Isn't the issue with 2.7.7 linux

for windows no problem

rebol 2.7.7 + rebgui 1.1.8 + my program  => no problem

rebol 2.7.7 linux + regbui 1.18 + tour.r of rebgui => segment fault 
!!!!!

i use a mint based on ubuntu 8.10 !!!!

It's a linux build issue ... keep using 2.7.6

oki thanks

check the linux group here

Gabriele mentions a segm. fault

If RebGUI is using draw, that would confirm what I'm seeing here 
as well. Must say that I'm using Mint as well, so this still does 
not rule out that it is a distribution specific issue (as other people 
reported it working).

Gabriele, could you try the style browser for the vid extension kit, 
please? AFAIR there is little to no DRAW used in it.


do http://97.107.135.89/www.hmkdesign.dk/data/projects/vid-ext-kit/downloads/style-browser.r

vid-ext seems to work fine for me, using rebview 2.7.7 on ubuntu

(if that's any help)

the vid ext style browser works, that is

Andreas, if rebgui fails on your setup, then there is possibly a 
DRAW issue.

hm, let me see if i have something to test rebgui lying around

a small rebgui app of mine using build 93 of rebgui works just fine

and the rebgui demo app using build 117 from the viewtop also works 
fine

if you didn't have problems before, then your setup is probably not 
the cause like in Claude's case.

Henrik: that seems to work fine. I haven't clicked all the styles, 
but most of them. I think that only DRAW crashes.

Gabriele, ok. also try to simply click the first style and hold down 
the down cursor key. then you will scroll through all styles.

btw, map-event crash if the event doesn't contain a gob.

btw 2/,  We can not set the gob attribute on custom events (using 
make event!)

Ah ! wrong thread

I need help! But that aside, how can I scroll programatically to 
a certain position in an area? I was able to scroll to the very end 
by doing this:


textarea/para/scroll/y: negate (textarea/text-y - textarea/size/y)
show textarea


But the scrollbar handle stays at the top when doing this. I haven't 
yet found out how I can access the scrollbar from the area which 
is probably what I will have to do to solve this, right?

display "test" [
	a: area (mold ctx-rebgui/colors)
	button [a/pane/data: .5 show a]
]

Thanks a lot :) Before I do something completely wrong again... I 
also want to scroll to a certain line in the text area if possible. 
My approach now would be to see if I can somehow see how many lines 
of text are displayed in the text area, calculate the percentage 
of the line I want to scroll to based on this total number of lines, 
divide that by 100 and use it for a/pane/data. Right..?

Is that informatio available?

This seems to work:

display "test" [
	a: area (mold ctx-rebgui/colors)
	button [
		scroll-to-line: 5
		
		line-height: 30
		total-lines: (second size-text a) / line-height
		percent: ((scroll-to-line - 1) / (total-lines / 100)) / 100
		a/pane/data: percent
		show a
	]
]


The height of a line is hardcoded though which means it stops working 
if the font size is changed. Is there a way to get the current line 
height?

presumably you need to get the font information out

a/font/size gives me the font size, which is 12 by default. But does 
that help in getting the line height? Is there some kind of standard 
so that a font with the size 12 always has a height of font-size 
* something? Don't know anything about fonts...

Nor me ...

:) Thanks anyhow

but if you can get the font name, font size you should be able to 
create some text and then get the sizes from that

So, instead of using your whole area, just use one character in a 
face

Ah you mean like in an invisible text container? That should work, 
right. Thanks :)

Yep, something like that :)

ctx-rebgui/sizes/font-height

Thanks Ashley. That only shows the height for the default font though. 
I am displaying three text areas with different font sizes, so I 
set the font size in the areas directly. I had to use an invisible 
text area now anyway though because I forgot that to be able to scroll 
to a certain line in the text area I have to find out in which line 
a certain word, to which I want to scroll, actually is :) So now 
I made a test text area for this and positioned the "real" text area 
on top of it so that the test text area is completely covered by 
it. I copy the text up till the word I want to scroll to into the 
test text area and then look at the text size of the test text area 
and use that information to scroll the "real" text area to this word. 
It isn't working correctly yet but it should so I guess I just made 
a stupid mistake somewhere, have to look at it again tomorrow.

Good luck!  We need this for the spell checker

hi, how i can force a field to be disabled ?   i try myfield/options: 
[info]  but it don't work !!!!

You can toggle enabled/disabled with the set-state function.

Example app: display "test" [a: field do [set-state a]] do-events