[erlang-questions] I have trouble with R14B/wx/Windows XP

Dan Gudmundsson <>
Wed Sep 22 16:40:40 CEST 2010


Actually it's the other way around, werl should work, and erl have problems.
It seems wxWidgets and erlang fights over stdio or something, we
havn't been able to
find the real issue.

werl -detached works if you don't want a shell at all example:
werl -detached -run wx demo

/Dan

On Wed, Sep 22, 2010 at 4:31 PM, Fred Hebert <> wrote:
> Have you tried it with erl.exe instead? There are problems documented with
> werl.exe and stuff that requires GUIs, as far as I know. The erl.exe shell
> is supposed to be alright.
>
> On Wed, Sep 22, 2010 at 10:11 AM, Pascal Chapier
> <>wrote:
>
>>
>> Hi list,
>>
>> I have trouble with the R14B release under Windows XP.
>> It seems that the wx library does not work properly on my PC.
>>
>> I installed the R14B on my PC, in addition to the R14A which I use by
>> default.
>>
>> If I launch werl from the erl5.8.1\bin directory, and try to launch an
>> application which use wx, it crashes
>> without any log or valuable information:
>>
>> werl session:
>> Erlang R14B (erts-5.8.1) [smp:2:2] [rq:2] [async-threads:0]
>>
>> Execution des cmds erlang from "D:\documents and Settings\PChapier\.erlang
>> "Nom de la machine: "WXFR88952L", cookie nocookie
>> Eshell V5.8.1  (abort with ^G)
>> 1> debugger:start().
>>
>> crash message (translated from french):
>> werl.exe - Application error
>> The instruction at "0x7C911980" uses the address memory location
>> "0x00000000". The memory cannot be read.
>>
>> The crash happens as soon as the wx:new() function is called (I made the
>> call directly
>> from the shell to check it).
>> I changed the windows path to use the R14B by default: same behaviour.
>> A very strange thing is that it has worked properly once with
>> debbugger:start(),
>> and once with wx:new() within more than 20 trials; but as soon as I stopped
>> wx, I got a crash at the next call
>> to wx:new/0.
>>
>> I have tried also the toolbar, tv,appmon... and some application without
>> graphic or using gs:
>> no problem except toolbar->debugger.
>>
>> It is ok with R14A.
>>
>> Any idea?
>>
>> BR
>>
>> Pascal.
>>
>>
>


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