GTK threads

2009-07-08 Thread Marshall Lake 


I posted this on gtk-list but in the hope of catching a wider audience ...

I'm developing a program(s) which runs in the client/server environment. 
I'm using GTK, sockets, and threads.  (GTK and threads only on the client 
side.)  I don't have very much experience using threads and this is the 
first time I've tried to call GTK functions within a thread, and I'm 
having problems.  I've tried different ways of approaching the problem but 
can't seem to get anywhere.  I suspect there's something I don't 
understand about thread processing or I'm under some misconception. 
Maybe someone can help me?  Any help is much appreciated.


I get the following errors when trying to run the code below (the errors 
show up when the program calls gtk_dialog_run() in the thread 
(Wait4Challenge()):


src/xcb_io.c:242: process_responses: Assertion `(((long) (dpy-last_request_read) - 
(long) (dpy-request)) = 0)' failed.
Fatal IO error 0 (Success) on X server :0.0.


void *
Wait4Challenge () {
  int wsock, x, port = 0, listensock, connected;
  char buffer[5000], *msg[5], challenger[50];

  listensock = -1;
  for (x = 0; x  5; x++)
  msg[x] = NULL;

  wsock = get_connection (SOCK_STREAM, port, listensock);

  connected = 1;
  while (connected) {
  GtkWidget *dialog;
  int response;

  if (sock_gets (wsock, buffer[0], sizeof (buffer))  0) {
  msg[0] = There is a problem with the server.\n\n;
  outMessage (msg);
  connected = 0;
  }

  if (buffer[0] == 'R')
  connected = 0;

  if (buffer[0] != 'C')
  continue;

  strcpy (challenger[0], buffer[1]);

  gdk_threads_enter ();

  dialog = gtk_message_dialog_new (GTK_WINDOW (mainwin), 
GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_QUESTION,
  GTK_BUTTONS_YES_NO, %s has challenged you to a game.  
Do you wish to play?, challenger);
  gtk_window_set_title (GTK_WINDOW (dialog), Play Challenger?);
  response = gtk_dialog_run (GTK_DIALOG (dialog));
  gtk_widget_destroy (dialog);

  gdk_flush();
  gdk_threads_leave ();

  if (response == GTK_RESPONSE_YES) {
  sock_puts (wsock, OK\n);
  connected = 0;
  }
  else {
  sock_puts (wsock, NO\n);
  for (x = 0; x  5; x++)
  msg[x] = NULL;
  continue;
  }
  }

  shutdown (wsock, SHUT_RDWR);
  close (wsock);
  return (NULL);
}

int
main (int argc, char *argv[]) {
  g_thread_init (NULL);
  gdk_threads_init ();

  gtk_init (argc, argv);

  mainwin = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_widget_set_usize (mainwin, WINSIZEX, WINSIZEY);
  gtk_widget_realize (mainwin);

  gtk_widget_add_events (mainwin, GDK_BUTTON_PRESS_MASK);
  gtk_signal_connect (GTK_OBJECT (mainwin), delete_event, GTK_SIGNAL_FUNC 
(delete_event), 0);

  gtk_widget_show_all (mainwin);

  if (!g_thread_create (Wait4Challenge, NULL, FALSE, NULL))
  syslog (LOG_INFO, error trying to create new thread);

  gdk_threads_enter ();

  gtk_main ();

  gdk_flush();
  gdk_threads_leave ();

  return 0;
}

--
Marshall Lake -- ml...@mlake.net -- http://mlake.net
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list

Re: GTK threads

2009-07-08 Thread Ardhan Madras 
Hi,

You should be aware when call GTK+ function in another thread, if you do this 
from another thread, GTK+ is likely not send commands to the X server. When you 
run a dialog in the main thread, main loop is blocked, so the dialog's window 
remain displayed until a response was given (eg. button was clicked). But in 
you code, you run the dialog outside the main loop (main thread) the main loop 
of course is not blocked, and it fails to show the dialog. See 
http://library.gnome.org/devel/gtk-faq/stable/x499.html on howto send GTK+ 
funcs to the main loop. Another way is to provide mechanism so you can run the 
dialog from the main thread by using such as condition variable (GCond).

-- ajhwb

--- ml...@mlake.net wrote:

From: Marshall Lake ml...@mlake.net
To: gtk-app-devel-list@gnome.org
Subject: GTK  threads
Date: Wed, 8 Jul 2009 09:38:30 -0400 (EDT)


I posted this on gtk-list but in the hope of catching a wider audience ...

I'm developing a program(s) which runs in the client/server environment. 
I'm using GTK, sockets, and threads.  (GTK and threads only on the client 
side.)  I don't have very much experience using threads and this is the 
first time I've tried to call GTK functions within a thread, and I'm 
having problems.  I've tried different ways of approaching the problem but 
can't seem to get anywhere.  I suspect there's something I don't 
understand about thread processing or I'm under some misconception. 
Maybe someone can help me?  Any help is much appreciated.

I get the following errors when trying to run the code below (the errors 
show up when the program calls gtk_dialog_run() in the thread 
(Wait4Challenge()):

src/xcb_io.c:242: process_responses: Assertion `(((long) 
(dpy-last_request_read) - (long) (dpy-request)) = 0)' failed.
Fatal IO error 0 (Success) on X server :0.0.


void *
Wait4Challenge () {
   int wsock, x, port = 0, listensock, connected;
   char buffer[5000], *msg[5], challenger[50];

   listensock = -1;
   for (x = 0; x  5; x++)
   msg[x] = NULL;

   wsock = get_connection (SOCK_STREAM, port, listensock);

   connected = 1;
   while (connected) {
   GtkWidget *dialog;
   int response;

   if (sock_gets (wsock, buffer[0], sizeof (buffer))  0) {
   msg[0] = There is a problem with the server.\n\n;
   outMessage (msg);
   connected = 0;
   }

   if (buffer[0] == 'R')
   connected = 0;

   if (buffer[0] != 'C')
   continue;

   strcpy (challenger[0], buffer[1]);

   gdk_threads_enter ();

   dialog = gtk_message_dialog_new (GTK_WINDOW (mainwin), 
GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_QUESTION,
   GTK_BUTTONS_YES_NO, %s has challenged you to a 
game.  Do you wish to play?, challenger);
   gtk_window_set_title (GTK_WINDOW (dialog), Play Challenger?);
   response = gtk_dialog_run (GTK_DIALOG (dialog));
   gtk_widget_destroy (dialog);

   gdk_flush();
   gdk_threads_leave ();

   if (response == GTK_RESPONSE_YES) {
   sock_puts (wsock, OK\n);
   connected = 0;
   }
   else {
   sock_puts (wsock, NO\n);
   for (x = 0; x  5; x++)
   msg[x] = NULL;
   continue;
   }
   }

   shutdown (wsock, SHUT_RDWR);
   close (wsock);
   return (NULL);
}

int
main (int argc, char *argv[]) {
   g_thread_init (NULL);
   gdk_threads_init ();

   gtk_init (argc, argv);

   mainwin = gtk_window_new (GTK_WINDOW_TOPLEVEL);
   gtk_widget_set_usize (mainwin, WINSIZEX, WINSIZEY);
   gtk_widget_realize (mainwin);

   gtk_widget_add_events (mainwin, GDK_BUTTON_PRESS_MASK);
   gtk_signal_connect (GTK_OBJECT (mainwin), delete_event, 
GTK_SIGNAL_FUNC (delete_event), 0);

   gtk_widget_show_all (mainwin);

   if (!g_thread_create (Wait4Challenge, NULL, FALSE, NULL))
   syslog (LOG_INFO, error trying to create new thread);

   gdk_threads_enter ();

   gtk_main ();

   gdk_flush();
   gdk_threads_leave ();

   return 0;
}

-- 
Marshall Lake -- ml...@mlake.net -- http://mlake.net
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list




_
Listen to KNAC, Hit the Home page and Tune In Live! --- http://www.knac.com
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list

Re:Re: Can I set background image for GtkTextView

2009-07-08 Thread Ardhan Madras 
When you reply, please add CC to the mailing-list, so other peoples know and 
may help you more.

Thanks,

--- win...@126.com wrote:

From: winsty win...@126.com
To: ajhwb aj...@knac.com
Subject: Re:Re: Can I set background image for GtkTextView
Date: Fri, 3 Jul 2009 10:32:29 +0800 (CST)

It works fine, thanks.




在2009-07-02?23:32:21，Ardhan?Madras?aj...@knac.com?写道：
Hi,
I?already?wrote?a?simple?demo?in?the?past?when?working?on?my?project,?this?may?help?you,?feel?free?to?explore?the?codes?because?this?is?a?really?simple?one:

#include?gtk/gtk.h

int?
main?(intargc,
??char?**argv)
{
??GtkWidget?*window;
??GtkWidget?*textv;
??GdkWindow?*textv_window;
??GdkPixmap?*pixmap;
??GdkColor?color;

??
??gtk_init?(argc,?argv);
??
??window?=?gtk_window_new?(GTK_WINDOW_TOPLEVEL);
??gtk_window_set_default_size?(GTK_WINDOW?(window),?400,?600);
??g_signal_connect?(window,?destroy,?G_CALLBACK?(gtk_main_quit),?NULL);
??
??textv?=?gtk_text_view_new?();
??gtk_container_add?(GTK_CONTAINER?(window),?textv);
??
??gtk_widget_show_all?(window);
??
??/*?Windows?are?are?nonexistent?before?the?widget?has?been?realized.?*/
??textv_window?=?gtk_text_view_get_window?(GTK_TEXT_VIEW?(textv),?
???GTK_TEXT_WINDOW_TEXT);
??gdk_color_parse?(#68604d,?color);
??pixmap?=?gdk_pixmap_create_from_xpm?((GdkDrawable?*)?textv_window,?NULL,?
???color,?back-gimp.xpm);
??gdk_window_set_back_pixmap?(textv_window,?pixmap,?FALSE);
??
??gtk_main?();
??
??return?0;
}





---?amolgkulka...@gmail.com?wrote:

From:?Amol?amolgkulka...@gmail.com
To:?winsty?win...@126.com
Cc:?gtk-app-devel-list?gtk-app-devel-list@gnome.org
Subject:?Re:?Can?I?set?background?image?for?GtkTextView
Date:?Wed,?01?Jul?2009?10:48:18?+0530

Try?setting?background?to?textwindow?of?GtkTextView.
you?can?get?text_window?through?gtk_text_view_get_window
(textview,window_type);
I?don't?remember?exact?syntax?though.

Regards,
Amol
On?Tue,?2009-06-30?at?15:54?+0800,?winsty?wrote:
?Hi,?All
??
?I?want?to?set?a?background?image?for?GtkTextView?in?my?program,?but?i?don't?know?how?to?do?it.?And?i?also?can't?find?something?useful?about?
?this?question,?that's?why?I'm?sending?it?here.?
??
?Best?Regards
?winsty
??
?
?
?___
?gtk-app-devel-list?mailing?list
?gtk-app-devel-l...@gnome.org
?http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list

___
gtk-app-devel-list?mailing?list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list




_
Listen?to?KNAC,?Hit?the?Home?page?and?Tune?In?Live!?---?http://www.knac.com
___
gtk-app-devel-list?mailing?list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list




_
Listen to KNAC, Hit the Home page and Tune In Live! --- http://www.knac.com
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list

Re: GTK threads

2009-07-08 Thread Gregory Hosler 
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Marshall Lake wrote:
 
 I posted this on gtk-list but in the hope of catching a wider audience ...
 
 I'm developing a program(s) which runs in the client/server environment.
 I'm using GTK, sockets, and threads.  (GTK and threads only on the
 client side.)  I don't have very much experience using threads and this
 is the first time I've tried to call GTK functions within a thread, and
 I'm having problems.  I've tried different ways of approaching the
 problem but can't seem to get anywhere.  I suspect there's something I
 don't understand about thread processing or I'm under some
 misconception. Maybe someone can help me?  Any help is much appreciated.

If I'm not mistaken, X isn't tread-safe, which may be the root cause of the
specific error message that you're seeing. The implication is that any call
which may invoke X should be done from the main thread. When an auxiliary thread
does need to do some drawing, one way to achieve that would be with a
g_idle_add(), which will get invoked by the main thread when there is nothing
else to do.

Hope this helps,

- -Greg

 I get the following errors when trying to run the code below (the errors
 show up when the program calls gtk_dialog_run() in the thread
 (Wait4Challenge()):
 
 src/xcb_io.c:242: process_responses: Assertion `(((long)
 (dpy-last_request_read) - (long) (dpy-request)) = 0)' failed.
 Fatal IO error 0 (Success) on X server :0.0.
 
 
 void *
 Wait4Challenge () {
   int wsock, x, port = 0, listensock, connected;
   char buffer[5000], *msg[5], challenger[50];
 
   listensock = -1;
   for (x = 0; x  5; x++)
   msg[x] = NULL;
 
   wsock = get_connection (SOCK_STREAM, port, listensock);
 
   connected = 1;
   while (connected) {
   GtkWidget *dialog;
   int response;
 
   if (sock_gets (wsock, buffer[0], sizeof (buffer))  0) {
   msg[0] = There is a problem with the server.\n\n;
   outMessage (msg);
   connected = 0;
   }
 
   if (buffer[0] == 'R')
   connected = 0;
 
   if (buffer[0] != 'C')
   continue;
 
   strcpy (challenger[0], buffer[1]);
 
   gdk_threads_enter ();
 
   dialog = gtk_message_dialog_new (GTK_WINDOW (mainwin),
 GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_QUESTION,
   GTK_BUTTONS_YES_NO, %s has challenged you
 to a game.  Do you wish to play?, challenger);
   gtk_window_set_title (GTK_WINDOW (dialog), Play Challenger?);
   response = gtk_dialog_run (GTK_DIALOG (dialog));
   gtk_widget_destroy (dialog);
 
   gdk_flush();
   gdk_threads_leave ();
 
   if (response == GTK_RESPONSE_YES) {
   sock_puts (wsock, OK\n);
   connected = 0;
   }
   else {
   sock_puts (wsock, NO\n);
   for (x = 0; x  5; x++)
   msg[x] = NULL;
   continue;
   }
   }
 
   shutdown (wsock, SHUT_RDWR);
   close (wsock);
   return (NULL);
 }
 
 int
 main (int argc, char *argv[]) {
   g_thread_init (NULL);
   gdk_threads_init ();
 
   gtk_init (argc, argv);
 
   mainwin = gtk_window_new (GTK_WINDOW_TOPLEVEL);
   gtk_widget_set_usize (mainwin, WINSIZEX, WINSIZEY);
   gtk_widget_realize (mainwin);
 
   gtk_widget_add_events (mainwin, GDK_BUTTON_PRESS_MASK);
   gtk_signal_connect (GTK_OBJECT (mainwin), delete_event,
 GTK_SIGNAL_FUNC (delete_event), 0);
 
   gtk_widget_show_all (mainwin);
 
   if (!g_thread_create (Wait4Challenge, NULL, FALSE, NULL))
   syslog (LOG_INFO, error trying to create new thread);
 
   gdk_threads_enter ();
 
   gtk_main ();
 
   gdk_flush();
   gdk_threads_leave ();
 
   return 0;
 }
 


- --
+-+

Please also check the log file at /dev/null for additional information.
(from /var/log/Xorg.setup.log)

| Greg Hosler   ghos...@redhat.com|
+-+
-BEGIN PGP SIGNATURE-
Version: GnuPG v1.4.9 (GNU/Linux)
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org

iEYEARECAAYFAkpU99MACgkQ404fl/0CV/QP0gCdFjSI6ASkdRfr70QXpy5amjQn
z28AoKG55bgTe2t9dUERYc1G8wxPULaT
=DMvb
-END PGP SIGNATURE-
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list

Re: Stop alt-spacebar window menu

2009-07-08 Thread Michael Torrie 
Bill Farmer wrote:
 Thanks for all the help. I've put it in the too hard box for the moment, 
 but will come back to it later...

So it looks like it is certainly possible to take alt-spacebar away from
the window manager.  Just now I noticed that VirtualBox's virtual
machine windows do this very thing.  In fact alt-clicking to drag/resize
is eaten by virtualbox as well. So there must be a way to do what you
want.  I suppose the open source VirtualBox source code may shed light
on this.
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list

Re: Stop alt-spacebar window menu

2009-07-08 Thread Michael Torrie 
Michael Torrie wrote:
 So it looks like it is certainly possible to take alt-spacebar away from
 the window manager.  Just now I noticed that VirtualBox's virtual
 machine windows do this very thing.  In fact alt-clicking to drag/resize
 is eaten by virtualbox as well. So there must be a way to do what you
 want.  I suppose the open source VirtualBox source code may shed light
 on this.

I should add that this behavior seems to be true on Gnome when the
pointer grab is turned *off*.  In other words I haven't captured the
keyboard and mouse into the virtual machine window yet alt-spacebar,
alt-click, etc, are all not passed to the window manager.
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list

Re: GTK threads

2009-07-08 Thread Ardhan Madras 
(When you reply, please add CC to devel mailing list, so other peoples know 
it's progress and may help you more).

--- ml...@mlake.net wrote:

From: Marshall Lake ml...@mlake.net
To: Ardhan Madras aj...@knac.com
Subject: Re: GTK  threads
Date: Wed, 8 Jul 2009 12:21:34 -0400 (EDT)


Thanks for your feedback.  I think what you say is likely my problem.



On Wed, 8 Jul 2009, Ardhan Madras wrote:

 Hi,

 You should be aware when call GTK+ function in another thread, if you do this 
 from another thread, GTK+ is likely not send commands to the X server. When 
 you run a dialog in the main thread, main loop is blocked, so the dialog's 
 window remain displayed until a response was given (eg. button was clicked). 
 But in you code, you run the dialog outside the main loop (main thread) the 
 main loop of course is not blocked, and it fails to show the dialog. See 
 http://library.gnome.org/devel/gtk-faq/stable/x499.html on howto send GTK+ 
 funcs to the main loop. Another way is to provide mechanism so you can run 
 the dialog from the main thread by using such as condition variable (GCond).

 -- ajhwb

 --- ml...@mlake.net wrote:

 From: Marshall Lake ml...@mlake.net
 To: gtk-app-devel-list@gnome.org
 Subject: GTK  threads
 Date: Wed, 8 Jul 2009 09:38:30 -0400 (EDT)


 I posted this on gtk-list but in the hope of catching a wider audience ...

 I'm developing a program(s) which runs in the client/server environment.
 I'm using GTK, sockets, and threads.  (GTK and threads only on the client
 side.)  I don't have very much experience using threads and this is the
 first time I've tried to call GTK functions within a thread, and I'm
 having problems.  I've tried different ways of approaching the problem but
 can't seem to get anywhere.  I suspect there's something I don't
 understand about thread processing or I'm under some misconception.
 Maybe someone can help me?  Any help is much appreciated.

 I get the following errors when trying to run the code below (the errors
 show up when the program calls gtk_dialog_run() in the thread
 (Wait4Challenge()):

 src/xcb_io.c:242: process_responses: Assertion `(((long) 
 (dpy-last_request_read) - (long) (dpy-request)) = 0)' failed.
 Fatal IO error 0 (Success) on X server :0.0.


 void *
 Wait4Challenge () {
   int wsock, x, port = 0, listensock, connected;
   char buffer[5000], *msg[5], challenger[50];

   listensock = -1;
   for (x = 0; x  5; x++)
   msg[x] = NULL;

   wsock = get_connection (SOCK_STREAM, port, listensock);

   connected = 1;
   while (connected) {
   GtkWidget *dialog;
   int response;

   if (sock_gets (wsock, buffer[0], sizeof (buffer))  0) {
   msg[0] = There is a problem with the server.\n\n;
   outMessage (msg);
   connected = 0;
   }

   if (buffer[0] == 'R')
   connected = 0;

   if (buffer[0] != 'C')
   continue;

   strcpy (challenger[0], buffer[1]);

   gdk_threads_enter ();

   dialog = gtk_message_dialog_new (GTK_WINDOW (mainwin), 
 GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_QUESTION,
   GTK_BUTTONS_YES_NO, %s has challenged you to a 
 game.  Do you wish to play?, challenger);
   gtk_window_set_title (GTK_WINDOW (dialog), Play Challenger?);
   response = gtk_dialog_run (GTK_DIALOG (dialog));
   gtk_widget_destroy (dialog);

   gdk_flush();
   gdk_threads_leave ();

   if (response == GTK_RESPONSE_YES) {
   sock_puts (wsock, OK\n);
   connected = 0;
   }
   else {
   sock_puts (wsock, NO\n);
   for (x = 0; x  5; x++)
   msg[x] = NULL;
   continue;
   }
   }

   shutdown (wsock, SHUT_RDWR);
   close (wsock);
   return (NULL);
 }

 int
 main (int argc, char *argv[]) {
   g_thread_init (NULL);
   gdk_threads_init ();

   gtk_init (argc, argv);

   mainwin = gtk_window_new (GTK_WINDOW_TOPLEVEL);
   gtk_widget_set_usize (mainwin, WINSIZEX, WINSIZEY);
   gtk_widget_realize (mainwin);

   gtk_widget_add_events (mainwin, GDK_BUTTON_PRESS_MASK);
   gtk_signal_connect (GTK_OBJECT (mainwin), delete_event, 
 GTK_SIGNAL_FUNC (delete_event), 0);

   gtk_widget_show_all (mainwin);

   if (!g_thread_create (Wait4Challenge, NULL, FALSE, NULL))
   syslog (LOG_INFO, error trying to create new thread);

   gdk_threads_enter ();

   gtk_main ();

   gdk_flush();
   gdk_threads_leave ();

   return 0;
 }

 -- 
 Marshall Lake -- ml...@mlake.net -- http://mlake.net
 ___
 gtk-app-devel-list mailing list
 gtk-app-devel-list@gnome.org
 http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list




 _
 Listen to KNAC, Hit the Home page and Tune

gtk_file_chooser_hangs

2009-07-08 Thread arne 

Hello,

I have the problem, that the gtk_file_chooser is not working anymore in
my application under win32. I get just a sandglass-curser over it.
I get no warning or errormessage on the console.

I Setup a new Computer with Mingw and the actual (2009/06/01) All-In ONE Bundle.

I had the same Problem earlier this year, but it is not solved yet.
http://mail.gnome.org/archives/gtk-app-devel-list/2009-January/msg00075.html

Any Idea what I can do?

Best regards
  Arne
___
gtk-app-devel-list mailing list
gtk-app-devel-list@gnome.org
http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list