GTK DISPLAY Error in GUI Application

[Ian Mallett]

Hi,

I have written a GUI program (developed on Windows), and am working on cross-platform testing. When running from a console on Ubuntu 12.04, I get the following output

No protocol specified
No protocol specified
Error: Unable to initialize gtk, is DISPLAY set properly?

"echo $DISPLAY" returns ":0".

When running from an explorer window, no window opens.

Help? Thanks,
Ian

[Vadim Zeitlin]

On Sat, 29 Sep 2012 12:36:27 -0600 Ian Mallett wrote:

IM> I have written a GUI program (developed on Windows), and am working on
IM> cross-platform testing. When running from a console on Ubuntu 12.04, I get
IM> the following output
IM> No protocol specified
IM> No protocol specified

I have no idea where do these messages come from but they don't come from
wxWidgets. Perhaps you're using some unusual GTK+ version?

IM> Error: Unable to initialize gtk, is DISPLAY set properly?
IM>
IM> "echo $DISPLAY" returns ":0".

Is it exported? I.e. what does "env|fgrep -a DISPLAY" say?

Also do the other X11 applications run from this command line? E.g.
xclock?

Regards,
VZ

--
TT-Solutions: wxWidgets consultancy and technical support
http://www.tt-solutions.com/

[Ian Mallett]

On Sat, Sep 29, 2012 at 2:38 PM, Vadim Zeitlin <va...@wxwidgets.org> wrote:

On Sat, 29 Sep 2012 12:36:27 -0600 Ian Mallett wrote:

IM> I have written a GUI program (developed on Windows), and am working on
IM> cross-platform testing. When running from a console on Ubuntu 12.04, I get
IM> the following output
IM> No protocol specified
IM> No protocol specified

 I have no idea where do these messages come from but they don't come from
wxWidgets. Perhaps you're using some unusual GTK+ version?

I have no idea. How is GTK+ related to wxWidgets?

IM> Error: Unable to initialize gtk, is DISPLAY set properly?
IM>
IM> "echo $DISPLAY" returns ":0".

 Is it exported?

I haven't set it myself, if that's what you mean.
 

I.e. what does "env|fgrep -a DISPLAY" say?

DISPLAY=:0

 Also do the other X11 applications run from this command line? E.g.
xclock?

No. xclock in particular gives identical output.
 

 Regards,
VZ

Thanks,
Ian

[Gerald Brandt]

----- Original Message -----
> From: "Ian Mallett" <geome...@gmail.com>
> To: wx-u...@googlegroups.com
> Sent: Saturday, September 29, 2012 5:20:31 PM
> Subject: Re: GTK DISPLAY Error in GUI Application
>
> On Sat, Sep 29, 2012 at 2:38 PM, Vadim Zeitlin < va...@wxwidgets.org
> > wrote:
>
>
>
> On Sat, 29 Sep 2012 12:36:27 -0600 Ian Mallett wrote:
>
> IM> I have written a GUI program (developed on Windows), and am
> working on
> IM> cross-platform testing. When running from a console on Ubuntu
> 12.04, I get
> IM> the following output
> IM> No protocol specified
> IM> No protocol specified
>

Are you trying to run the app as a different user than the one that logged into X?

Gerald

[Ian Mallett]

On Sat, Sep 29, 2012 at 4:37 PM, Gerald Brandt <g...@majentis.com> wrote:

Are you trying to run the app as a different user than the one that logged into X?

Not certain. I am running the application in a standard Ubuntu terminal (I'm not SSHed in or anything).

I logged in to Ubuntu using my standard username and password, and just started the terminal. The terminal does not (and cannot) have root access.

Gerald

Ian

[Vadim Zeitlin]

On Sat, 29 Sep 2012 17:22:59 -0600 Ian Mallett wrote:

IM> On Sat, Sep 29, 2012 at 4:37 PM, Gerald Brandt <g...@majentis.com> wrote:
IM>
IM> > Are you trying to run the app as a different user than the one that logged
IM> > into X?
IM> >
IM> Not certain. I am running the application in a standard Ubuntu terminal
IM> (I'm not SSHed in or anything).

If so running xclock should definitely work. And once it works, running wx
programs should work too. But this is not a wxWidgets problem at all,
something is seriously wrong on your system if you can't run any X
application. You probably should ask for help in Ubuntu forums because I
really have no idea about could be causing it, especially if you just are
on a normal Ubuntu installation.

[Ian Mallett]

On Sat, Sep 29, 2012 at 6:19 PM, Vadim Zeitlin <va...@wxwidgets.org> wrote:

this is not a wxWidgets problem at all,
something is seriously wrong on your system if you can't run any X
application.

Alright--thanks!