gmane.comp.gnome.gtk+.python

Re: pygobject_new segfault

Hrvoje Niksic — 2012-05-21T10:01:57

You need to call pygobject_init(-1, -1, -1) before using pygobject.  You 
also need to call Py_Initialize().  Also, since you're using gtk, and 
not just gdk, you should call gtk_init().

With the first three lines of main() changed to:

     gdk_init(&argc, &argv);
     Py_Initialize();
     pygobject_init(-1, -1, -1);

and with -lpython2.7 added to the compilation line, the test program no 
longer segfaults on startup.
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(no subject)

Manne Tallmarken — 2012-05-21T09:00:10

Helly guys,

I am trying to run a simple test program, however, it segfaults:

#include <stdio.h>
#include <gtk/gtk.h>
#include <pygobject.h>

int main(int argc, char **argv)
{
    gdk_init(&argc, &argv);
    
    GtkWidget *test = gtk_button_new();

    PyObject *p = pygobject_new ((GObject *) test);

    printf("%p\n", p);

    return 0;
}

$ gcc -std=c99 -Wall `pkg-config --cflags --libs gtk+-2.0` -I/usr/include/python2.7 -I/usr/include/pygtk-2.0 -o debug debug.c && ./debug
zsh: segmentation fault  ./debug

If I remove the line containing pygobject_new it works. What am I doing wrong?

$ uname -a
Linux helix 3.0.0-1-amd64 #1 SMP Sat Aug 27 16:21:11 UTC 2011 x86_64 GNU/Linux

$ cat /etc/issue
Debian GNU/Linux wheezy/sid

$ dpkg -l python2.7-dev|grep python                 
ii  python2.7-dev                         2.7.3~rc2-2.1                   Header files and a static library for Python (v2.7)

$ dpkg -l python-gobject-2-dev|grep python
ii  python-gobject-2-dev                  2.28.6-10                    development headers for the static GObject Python bindings

Best regards,
Manne Tallmarken
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pygobject_new segfault

Manne Tallmarken — 2012-05-21T09:06:45

Helly guys,

I am trying to run a simple test program, however, it segfaults:

#include <stdio.h>
#include <gtk/gtk.h>
#include <pygobject.h>

int main(int argc, char **argv)
{
    gdk_init(&argc, &argv);
   
    GtkWidget *test = gtk_button_new();

    PyObject *p = pygobject_new ((GObject *) test);

    printf("%p\n", p);

    return 0;
}

$ gcc -std=c99 -Wall `pkg-config --cflags --libs gtk+-2.0` -I/usr/include/python2.7 -I/usr/include/pygtk-2.0 -o debug debug.c && ./debug
zsh: segmentation fault  ./debug

If I remove the line containing pygobject_new it works. What am I doing wrong?

$ uname -a
Linux helix 3.0.0-1-amd64 #1 SMP Sat Aug 27 16:21:11 UTC 2011 x86_64 GNU/Linux

$ cat /etc/issue
Debian GNU/Linux wheezy/sid

$ dpkg -l python2.7-dev|grep python                
ii  python2.7-dev                         2.7.3~rc2-2.1                   Header files and a static library for Python (v2.7)

$ dpkg -l python-gobject-2-dev|grep python
ii  python-gobject-2-dev                  2.28.6-10                    development headers for the static GObject Python bindings

Best regards,
Manne Tallmarken
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Re: shrink window to minimum size when some child widgetsare hidden

Giuseppe Penone — 2012-05-20T16:55:21

No, this is already the default behaviour.
I found the best solution (so far) is to call

window.resize(1,1)

after hiding widgets that require the window to shrink.
This way the window will be shrunk to minimum.

Cheers,
Giuseppe.



On Sun, May 20, 2012 at 6:51 PM, Tom Cato Amundsen <tca< at >gnu.org> wrote:

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Re: shrink window to minimum size when some child widgetsare hidden

Tom Cato Amundsen — 2012-05-20T16:51:34

gtk.Window.set_resizable(True) ???

Tom Cato

2012/5/20 Giuseppe Penone <giuspen< at >gmail.com>

shrink window to minimum size when some child widgets arehidden

Giuseppe Penone — 2012-05-20T15:49:43

Hi,
It happens to me many times that after hiding some widgets in the window,
the window keeps the original size
leaving part of the window with just window background (gray) visible.
I'm searching for a solution, but had no luck so far.
Does anybody know how to behave to have the window to shrink to minimum
size given the actual displayed widgets?
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Re: gtk.SpinButton - weird behaviour

Giuseppe Penone — 2012-05-17T11:21:39

it could be a problem with the update policy.
I bet that you did set to update the value that the spinbutton gets after
any key press.

You can control where the cursor goes after any key press anyway, the entry
is child of editable (http://www.pygtk.org/docs/pygtk/class-gtkeditable.html
)

I have a similar problem with glade 3.12 (for gtk3) and any entry (I can
only copy and paste, not enter characters at the middle of an existing
word), unfortunately that's a glade bug and I cannot do anything.



On Wed, May 16, 2012 at 10:08 AM, Andreas Heinlein <aheinlein< at >gmx.com>wrote:

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gtk.SpinButton - weird behaviour

Andreas Heinlein — 2012-05-16T08:08:08

Hello,

we have a GTK2 python app which uses a gtk.SpinButton with a precision 
of 1, i.e. numbers like 1234.5. This widget behaves oddly when trying to 
enter values directly with the keyboard. It is difficult to describe; 
when you click the field and enter some digits, only the first is 
accepted, then the marker jumps to the end of the field (after the 
decimal digit) where you cannot enter anything. You can move the mark 
manually again and enter some more digits. It just isn't possible to 
click the field once and enter "1234.5" like it should.

Is this a known GTK problem/bug? We're using GTK 2.20. The spinButton is 
configured with digits=1, numeric=True, snap-to-ticks=False, 
alignment=1, increments=0.1,10.

Thanks,
Andreas
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Re: Porting to gobject and pygi questions?

Timo — 2012-05-09T18:17:33

Op 09-05-12 16:13, Stuart Axon schreef:
Not really minimal, but see the example folder in the PyGObject package: 
http://git.gnome.org/browse/pygobject/tree/examples/cairo-demo.py

It basicly comes down to this:

def lets_draw(da, ctx):
     print da, ctx
da = Gtk.DrawingArea()
da.connect('draw', lets_draw)

Cheers,
Timo


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Re: Porting to gobject and pygi questions?

Stuart Axon — 2012-05-09T14:13:03

In  https://live.gnome.org/PyGObject/IntrospectionPorting#Step_1:_The_Great_Renaming

it mentions "change expose-event to draw and do drawing with cairo." is there a really minimal example of this somewhere ?


- My App uses gtk DrawingArea fairly extensively.


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Re: Porting to gobject and pygi questions?

Tomeu Vizoso — 2012-05-09T13:47:04

Hi,

all those links should be here:

https://live.gnome.org/PyGObject

If it's still not clear, please say so and the page will be completed.

Regards,

Tomeu
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Porting to gobject and pygi questions?

Stuart Axon — 2012-05-09T11:49:32

Hello All,


  Appologies for asking on the pygtk list but -

I'm starting to port my app from pygtk to pygobject and running up against various problems... however I can't work out where to ask questions about pygi - the bugtracker on gnome says it's closed and I can't find a mailinglist for it (!)

 
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Re: PyGTK Windows debugging.

Timo — 2012-05-07T18:22:00

Op 07-05-12 17:26, cwr< at >netcom.co.uk schreef:
Why not do the same? Press the Windows/Super key on your keyboard and 
type cmd.exe. Now do the usual stuff: cd to the right directory and run 
with "python myapp.py".

Timo



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Re: PyGObject 3.3.1 released

Mystilleef — 2012-05-07T17:15:10

I imagine a lot of apps are going to break with the removal of
gobject.set_data and gobject.get_data. I know half of my apps are
broken as a result. :-(

I'm also noticing some apps are not loading properly or at all on my
desktop after the update to this version (Fedora Rawhide).

It would have been nice to deprecate these functions for a few
releases and giving developers the change to port/update their code
before removing them completely. Isn't this the correct procedure with
regards to breaking/removing APIs?

Also removing this makes PyGObject inconsistent with the C GObject API
which as far as I know still uses it.

On Mon, Apr 30, 2012 at 10:25 AM, Martin Pitt <martin.pitt< at >ubuntu.com> wrote:
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PyGTK Windows debugging.

2012-05-07T15:26:22

I usually debug PyGTK programs in the first instance
by starting them from a terminal and reading any error
messages written to stdout.  This works on Linux, but
apparently not on Windows, and for some reason I can't
find a clear Windows equivalent.

What's the usual way of getting error messages out of
a GUI under Windows?  Do I have to open a second window
and feed the messages across with eg. a pipe?

Thanks for any ideas - Will





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Re: PyGObject 3.3.1 released

Smartboy — 2012-05-02T17:48:12

I don't claim to be an expert on PyGObject, just a user, and I think the
differences lay partly in the fact that gnome-sudoku is a game, while
SmartTE is not. If you or anyone else has suggestions, though, I'm more
than happy to hear them. I'm still a student, and I'm still learning
myself. :)

Smartboy

On Wed, May 2, 2012 at 12:21 AM, Mark Summerfield <list< at >qtrac.plus.com>wrote:

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Re: PyGObject 3.3.1 released

Mark Summerfield — 2012-05-02T07:21:55

On Tue, 1 May 2012 09:03:48 -0700
Smartboy <smartboyathome< at >gmail.com> wrote:

Thanks. The code seems rather different in style from gnome-sudoku, but
I have only looked very briefly at them so far.

Re: PyGObject 3.3.1 released

Mark Summerfield — 2012-05-01T13:15:03

Hi Tomeu,

On Tue, 1 May 2012 12:16:01 +0200
Tomeu Vizoso <tomeu< at >tomeuvizoso.net> wrote:
[snip]

Yes, that's interesting to learn from.

Is the "Python GTK+3 Tutorial"
(http://readthedocs.org/docs/python-gtk-3-tutorial/en/latest/index.html)
valid for PyGObject? It seems to use gi.repository, so it looks like it
is good to use?

Thanks!

Re: PyGObject 3.3.1 released

Tomeu Vizoso — 2012-05-01T10:16:01

This one may be useful:

http://git.gnome.org/browse/gnome-games/tree/gnome-sudoku/src

Regards,

Tomeu
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Re: PyGObject 3.3.1 released

Mark Summerfield — 2012-05-01T10:06:08

Hi Tomeu,

On Tue, 1 May 2012 11:01:23 +0200
Tomeu Vizoso <tomeu< at >tomeuvizoso.net> wrote:

I can't see such a list on that page. There is a link to some demos and
examples and to the ported GNOME modules, but no end user _applications_
that I can see?

Questions about PyGObject

Mark Summerfield — 2012-04-27T09:00:27

Hi,

I hope this is the right list for PyGObject?
(If not, please ignore the rest and tell me what the right one is!)

I want to use PyGObject to create some GUI applications using Python 3.1
and Gtk 3.

And I want to test the applications against Python 3.1, 3.2, 3.3, ... on
Linux, Windows, and Mac OS X.

On the plus side, Fedora 16 and Ubuntu 11 both provide packages for
Python 3.2 + PyGObject + Gtk 3, so I can create the applications.

I have locally built and installed versions of Python 3.1, 3.2 (and soon
3.3), but have not been able to install PyGObject with any of them. Has
anyone done this who can point me to or provide (simple!) instructions?

I tried using jhbuild as per http://live.gnome.org/PyGObject It
wouldn't build gnome-doc-utils so I told it to skip that; but it also
failed to build glib so there was no point in continuing. Strangly it
looked like a Python 2 vs. Python 3 problem.

Also, there only seem to be Windows binaries for Python 2 (and they are
all a year old); and none for Python 3. At least not where I looked:
http://ftp.gnome.org/pub/GNOME/binaries/win32/pygobject/2.28/

Thanks!