[erlang-questions] wxErlang question 4

Steve Davis <>
Tue Jul 11 19:57:00 CEST 2017


You shouldn’t have to, no. I just cloned a new copy from github (and cleared my ERL_LIBS to make sure I wasn’t pulling in anything else) and it all seemed to work for me.

Do you have the stacktrace?


> On Jul 11, 2017, at 9:39 AM, Joe Armstrong <> wrote:
> 
> It didn't work for me - how did you launch this?
> 
> I did erl -pa ebin in the root directory (gx-master)
> gx:config works and I see a window
> 
> but gx:idx() crashes with a badmatch
> in line 37 of gx_ui_filetree.erl the line saying
> 
> directory = path:type(Path),
> 
> I think this is returning undefined -
> 
> Do I have to set some environment variables or something?
> 
> ./Joe
> 
> 
> 
> On Tue, Jul 11, 2017 at 1:22 PM, Steve Davis
> <> wrote:
>> 1) One of those projects that I haven’t had time for. If there was interest,
>> it may rekindle my interest in moving it along. Looking back, with the
>> second prototype I diverged too far from the GS way of doing this as I got
>> focused on XML definitions and so the interactive REPL part suffered. it’s
>> really code in mid-flight.
>> 
>> 2) However, the code still seems to work under R20 - See console session
>> below:
>> 
>> Erlang/OTP 20 [erts-9.0] [source] [64-bit] [smp:4:4] [ds:4:4:10]
>> [async-threads:10] [hipe] [kernel-poll:false]
>> 
>> Eshell V9.0  (abort with ^G)
>> 1> gx:start().
>> [<0.63.0> gx_driver:150] "/opt/local/lib/erlang/lib/wx-1.8.1/priv"
>> [<0.63.0> gx_driver:124] info_got_wx_consts
>> [<0.63.0> gx_driver:134] {handle_info,
>>                             {wxe_driver,open_file,"/Users/stevedavis"}}
>> {ok,<0.62.0>}
>> 2> rr(gx).
>> [aui,bitmapbutton,box,button,calendar,checkbox,checklist,
>> choice,combo,control,date,dialog,editor,evh,filetree,font,
>> frame,g,grid,gs,gs_font,gui,gx,gx_cache,gx_ui,gx_wx,image,
>> input,line|...]
>> 3> F = #frame{id=window, size={400,200}}.
>> #frame{id = window,ref = undefined,label = undefined,
>>       pos = {-1,-1},
>>       size = {400,200},
>>       callbacks = [],icon = undefined,title = <<"Untitled">>,
>>       show = true,virtual = false,content = []}
>> 4> gx:create(F).
>> [#gx_ui{id = window,
>>        ref = #wx_ref{ref = 37,type = wxFrame,state = []},
>>        parent = #wx_ref{ref = 0,type = wx,state = []},
>>        module = gx_ui_frame}]
>> 5> gx:names().
>> [window]
>> 6> gx:config(window, size, {800, 400}).
>> [<0.60.0> gx_ui:59] {{g,<0.62.0>,#Port<0.3025>,undefined,<0.64.0>,gx},
>>                     window,
>>                     [{size,{800,400}}]}
>> [ok]
>> 7> gx:ide().
>> [<0.95.0> gx_ui:59] {{g,<0.93.0>,#Port<0.3158>,undefined,<0.94.0>,ide},
>>                     log,
>>                     [{append,<<"$
>> {init,{gx,ide,{wx_ref,0,wx,[]},gx,start,[],[]},[{resources,undefined}]}\n">>}]}
>> {ok,<0.93.0>}
>> 
>> 
>> 
>> 
>> On Jul 11, 2017, at 2:48 AM, Joe Armstrong <> wrote:
>> 
>> Wow - lot's of code for me to stare at - thanks
>> 
>> A couple of questions:
>> 
>> 1) I downloaded the gx project and saw that there had been no
>>   commits since Jul 13 2014 - is this totally dead?
>> 
>> 2) How do I run your gx code? - what's a top level command to create a
>> window???
>> 
>> Cheers
>> 
>> /Joe
>> 
>> 
>> On Tue, Jul 11, 2017 at 1:07 AM, Steve Davis
>> <> wrote:
>> 
>> Sizers are crazy. A while back I had a decent go at making a hand-written
>> version of wx interfacing directly to the erlang driver and trying to make
>> it sensible as an API like GS. I think it should still work.
>> 
>> The following code was the result of a lot of reading the WxWidgets C++ API
>> docs and translating into what I felt was sensible to get to a single
>> interface module that resembled GS (i.e the module gx.erl).
>> 
>> https://github.com/komone/gx/blob/master/src/ui/gx_ui_sizer.erl
>> 
>> https://github.com/komone/gx/blob/master/src/ui/gx_ui_control.erl
>> 
>> https://github.com/komone/gx/blob/master/src/ui/gx_ui_button.erl
>> 
>> 
>> 



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