Re: [wxlua-users] Can't read output with wxPROCESS_REDIRECT and wxEXEC_ASYNC

[Paul K <pau...@ya...>]

Hi John,

> Please read the description of wxProcess where they describe how to
> use the streams. You will also want to check the status of the process
> before trying to use it as well.

Is there any particular problem with the logic I described? I know how
to use streams (I use it in other parts of the application), but I
wanted to have something very simple here (and ideally synchronous). I
oversimplified the logic (there is also CanRead() and few other
things), but the idea is as I described. I do check if the returned
value is not nil. Is there anything else you suggest I need to do?
Thanks.

Paul.

ZeroBrane Studio - slick Lua IDE and debugger for Windows, OSX, and
Linux - http://studio.zerobrane.com/

On Mon, Oct 1, 2012 at 8:49 PM, John Labenski <jla...@gm...> wrote:
> On Mon, Oct 1, 2012 at 11:41 AM, Paul K <pau...@ya...> wrote:
>> Hi João,
>>
>> Thank you for the solution. I ended up using the following, as it
>> allows me to implemented synchronous processing (while still using
>> EXEC_ASYNC):
>>
>>         local proc = wx.wxProcess.Open(cmd) -- this is using EXEC_ASYNC
>>         proc:Redirect()
>>         local streamin = proc:GetInputStream()
>>         local str = streamin:Read(4096)
>>
>> :Read() blocks waiting for input, which is exactly what I need.
>
> Please read the description of wxProcess where they describe how to
> use the streams. You will also want to check the status of the process
> before trying to use it as well.
>
> http://docs.wxwidgets.org/stable/wx_wxprocess.html#wxprocessredirect
>
> Regards,
>     John
>
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