wxhaskell-users

[wxhaskell-users] wxTaskBarIcon crash/hang

[Jose R. <jo...@gm...>]

Hi all,

trying out wxhaskell i modified the basic hello world apllication to
show an taskbar icon, and to pop a message on right-click
http://hpaste.org/9390 .

The problem is that when closing the window, the application segfaults
("taskBarIconDelete tbicon" does the segfaulting part).
I'm running GHC 6.8.3 / wxHaskell 0.10.3 binary.

When i get rid of the "on closing := do taskBarIconDelete tbicon", the
application does not close (as it probably feels yet another window is
opened).

What modification would be needed to get it to exit correctly ?
Is it possible to somehow filter the closing event and just hide the
window when the X / close window button is pressed  ("on closing :=
skipCurrentEvent" has no effect ...)?

Thanks, J.

PS: As tutorials for wxHaskell are pretty scarce right now, I thought
about "tutorializing" the app afterwards (it should be just little
phone number/door number/name/computer name search app for internal
use), would anyone be willing to look through it after i'm done with
it before i unleash it upon the unsuspecting world (destroying peace
and beauty all aroung and forcing poor haskellers to gouge their eyes
out in act of self-defense ;-)) ?

Re: [wxhaskell-users] wxTaskBarIcon crash/hang

[Eric Y. K. <eri...@gm...>]

On Tue, Aug 05, 2008 at 02:10:00 +0200, Jose Ramirez wrote:
> The problem is that when closing the window, the application segfaults
> ("taskBarIconDelete tbicon" does the segfaulting part).
> I'm running GHC 6.8.3 / wxHaskell 0.10.3 binary.

Ouch.  I saw "segfault" and I'm assuming "bug"

There are a couple things it may be helpful for you to do
(helpful for us, anyway)

[1] Could you please try this with wxHaskell from darcs?

 darcs get http://darcs.haskell.org/wxhaskell

You'll need wxWidgets 2.8 for it, though.  I doubt this will fix the
crash, since I haven't seen anything related in the list of changes,
but it's worth a shot.

[2] Also, getting a copy of the repository means that you will be able
to submit a minimal test case.  Please create a minimal crashy taskbar
version of the hello world app and put it in the bugs/ directory.  You
can use darcs record and darcs send to send it our way.  We like
reproducibility :-)

[3] Finally, this sounds like something that's worth a bug report on our
sourceforge tracker.
 
> PS: As tutorials for wxHaskell are pretty scarce right now, I thought
> about "tutorializing" the app afterwards (it should be just little
> phone number/door number/name/computer name search app for internal
> use), would anyone be willing to look through it after i'm done with
> it before i unleash it upon the unsuspecting world (destroying peace
> and beauty all aroung and forcing poor haskellers to gouge their eyes
> out in act of self-defense ;-)) ?

Great!  Send it to the list!

-- 
Eric Kow <http://www.nltg.brighton.ac.uk/home/Eric.Kow>
PGP Key ID: 08AC04F9