[grapefruit] [Gtk2hs-users] missing texts

[Michael Dever]

Hi

Wolfgang, I just noticed that happening with my project today and it  
definately wasn't happening a few days ago.I retested some of my older  
code that I know worked properly and it's happening there too. I did  
however do a system update yesterday, so that may have had something  
to do with it.

I'm reinstalling ubuntu and amn't going to update it, and the run my  
code. Will post my findings later to let you know!

Mick

Sent from my iPod

On 10 Mar 2009, at 17:38, Wolfgang Jeltsch  
<g9ks157k at acme.softbase.org> wrote:

> Hello,
>
> we experienced a strange problem. The UI library Grapefruit (which I  
> develop)
> uses Gtk2Hs internally. Grapefruit contains some small examples  
> which run
> very well on my machine (Ubuntu 8.10, AMD64). However, my collegues  
> (who use
> Debian lenny and Gentoo Linux) have a problem: text sometimes  
> disappears.
> This applies to all kinds of text: text on buttons, text in text  
> cells of
> list views, text in progress cells of list views and titles of list  
> view
> columns. Sometimes, the text is absent at the start of the  
> application. It
> may disappear or reappear when the window contents are changed or  
> the mouse
> moves over the respective widgets.
>
> Actually, Grapefruit does no strange things with Grapefruit (IMO).  
> Basically,
> it creates widgets, sets attributes and registers event handlers. I’ 
> m not
> sure whether it’s possible to corrupt memory by calling Gtk2Hs funct 
> ions in a
> wrong way. Or if Gtk2Hs has a bug.
>
> So I’d like to ask you whether you could have a look at the examples 
> . Do you
> experience such problems on your machine? Can you imagine what the  
> cause for
> them might be?
>
> To try out, please get the latest Grapefruit version from the darcs
> repository. It’s the Container example which causes the problems.
> Downloading, building and running the examples is described on
> <http://haskell.org/haskellwiki/Grapefruit>. However, this page  
> advises you
> to use GHCi to run the examples. Since this doesn’t always work well 
> , it’s
> better to create a standard executable from the following (untested)  
> source
> code:
>
>> import Graphics.UI.Grapefruit.Circuit
>> import Graphics.UI.Grapefruit.GTK
>> import Examples.Grapefruit.Container
>>
>> main = run GTK mainCircuit
>
> Thanks a lot for your help.
>
> Best wishes,
> Wolfgang
>
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