Re: C vs C++ for GTK
On 11/25/07, Benoît Dejean [EMAIL PROTECTED] wrote: Le dimanche 25 novembre 2007 à 00:03 +0100, Tomas Carnecky a écrit : Patrick wrote: is C++ to complicated? C++ is more complex than C, and thus harder to fully understand. Is C going out of date? No, it's still being used for lots of projects. Am I limited with C? No, there are very few features in C++ that are hard/impossible to imitate in C, but you usually won't need those for small projects. You can also do it in assembly if you have time. What people prefer mostly depends on their taste. I do C, my brother does C++, I can't say why that is. Since you worked with python which is object oriented I would imagine going with C++ will be easier for you during the first weeks. I've switched gnome-system-monitor to C++ and i'm very happy with it. Two questions about the sentence above: - What improvements or benefits did you find to switch to C++? - Is it going to be a C++ application from now on? BTW: excellent application -- Benoît Dejean GNOME http://www.gnomefr.org/ LibGTop http://directory.fsf.org/libgtop.html ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Re: is there a memory leak problem with gtk_widget_queue_draw()?
On 9/6/07, okty [EMAIL PROTECTED] wrote: Hi, I am using GLib's memory profiling to check memory usage of my program. I noticed that for each refresh in my screen with gtk_widget_queue_draw(), I am checking my allocated memory and each refresh increases the size of allocated memory. Do you know any memory leak problem in gtk_widget_queue_draw()? I've never used Glib's memory profiling, but sometimes other programs like Valgrind (you could use this as well) report false positives in memory leaks. It has something to do with the way the memory is allocated (GAllocator is specially confusing for profilers) Does the profiler report the problem is inside gtk_widget_queue_draw code? Cheers Regards, -- View this message in context: http://www.nabble.com/is-there-a-memory-leak-problem-with-gtk_widget_queue_draw%28%29--tf4392383.html#a12523308 Sent from the Gtk+ - Apps Dev mailing list archive at Nabble.com. ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Re: Problem with gtk_label_set_text
On 6/28/07, Divya yadav [EMAIL PROTECTED] wrote: Hello everyone I am using gtk_label_set_text in a dynamic gui and label keeps on changing around 1-2 times every second.My program crashes because of this. Is there any way to do the same. Is this a multi-threaded application? Thanks Divya ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Re: g_idle_add and thread safety
On 6/4/07, Gabriele Greco [EMAIL PROTECTED] wrote:
I know GTK APIs are not thread safe, I've an app with a thread doing a
massive job that wants to update the gui status every few cycles, to do
so I remembered an old post speaking about g_idle_add.
The question I have and which I didn't find answers both googling, both
looking at the sources is if g_idle_add can be called without any extra
mutex/lock from another thread.
AFAIK g_idle_add() is thread-safe. If I'm wrong you will notice soon :)
Cheers
- I have to use gdk_threads_init() mechanism?
- I have to use gdk_threads_enter/leave() around gtk_main() and around
the g_idle_add call?
- If so, if I use the gdk_threads_idle_add() facility I can avoid all
the locks or I have to lock around gtk_main anyway? (the example doesn't
clarify this)
Ideally my code should be something like:
static progress_datas;
gint myfunc(vod *unused)
{
gtk_label_set_text(blablabla, progress_data);
return FALSE; // call only once
}
work_thread() {
while(1) {
loops++;
[... do the real work ...]
if ((loops % 1000) == 0) {
update_progress_datas();
g_idle_add(myfunc, NULL);
}
}
}
int main()
{
[..gui init and thread start]
gtk_main()
}
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Re: gnome_program_init id necessary?
On 12/26/06, Enrico Sardi [EMAIL PROTECTED] wrote: Hi all! I was wondering...is gnome_program_init necessary in an application for gnome or gtk_init is sufficient? What is the exact utility of gnome_program_init? The best answer: http://developer.gnome.org/doc/API/2.0/libgnome/libgnome-gnome-program.html#gnome-program-init Best Regards Many thansk! Enrico ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Debugging application
Hello list! I'm developing a gtk application. The point is that I see in Gnome System Monitor that my application (a loop that continuously read a file and update data in the window) is eating more memory as it is executing... There are no problems (no errors or warnings) during compilation and valgrind, with: -v --leak-check=full doesn't show any problems of my code. However, it seems to be some problems with other code (like CORBA and more...). The fact is that my application grows (slowly) as Gnome System Monitor says: it starts with 4.6 MB and it reaches 5.6 after more than an hour... The point is that if I look at the gnome-system-monitor process in itself, this program also grows from 5.2 to 6.4... Is this normal? Is this related to the GSlice allocator or something similar? Should I be worried about memory leaks in my application? If I should... since valgrind doesn't show any errors, which tool should I use? Thanks in advance. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Debugging application
On 12/18/06, Fernando Apesteguía [EMAIL PROTECTED] wrote: Hello list! I'm developing a gtk application. The point is that I see in Gnome System Monitor that my application (a loop that continuously read a file and update data in the window) is eating more memory as it is executing... There are no problems (no errors or warnings) during compilation and valgrind, with: -v --leak-check=full doesn't show any problems of my code. However, it seems to be some problems with other code (like CORBA and more...). The fact is that my application grows (slowly) as Gnome System Monitor says: it starts with 4.6 MB and it reaches 5.6 after more than an hour... The point is that if I look at the gnome-system-monitor process in itself, this program also grows from 5.2 to 6.4... Is this normal? Is this related to the GSlice allocator or something similar? Should I be worried about memory leaks in my application? If I should... since valgrind doesn't show any errors, which tool should I use? OK, after the application reached 7.3 MB it went down (according to gnome-system-monitor) to 6.4 again... Any clues? Thanks in advance. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Libglade application distribution how-to?
On 11/27/06, Fabricio Rocha [EMAIL PROTECTED] wrote: Dearest ones, I have a working set of .C and .H source files for my application, a bunch of Glade files and their icons in a subdirectory called pixmaps, and I can get all this stuff compiled and functional through Anjuta. Ok. But could you please point out a good tutorial of how to put all this stuff in a source tarball, so the application can be downloaded and tested by other people? I could not find anything like that with Google. Anjuta generates tarball files for your sources. A good one, without complications. Go to Build - build tarball. I am sure I am NOT doing it right: - There is all that EXTREMELY complicated stuff of autoconf, automake, makefiles, etc., first of all. Can I presume that just putting my Anjuta-generated Makefiles along with the sources in the tarball will work? Or what exactly must be done? No. - Although Glade can see and draw the pixmaps in ./pixmaps when I edit the interface files, I found out (after a project directory change) that the pixmaps are not found in runtime. Maybe this is the reason I get those Failed to read a valid object file image from memory when running the app from GDB. How can one force libglade to find these pixmaps? If you just use the tarball generated by Anjuta, the paths will be properly configured (for example if you use the ./configure --prefix=/mydirectory/myapplication) - I have been using the config.h macro PACKAGE_SRC_DIR in the sources for loading the Glade files, but what will happen if someone wants to build a, for example, Debian binary package with the software? I suppose there will be no source directory in this case, so what would be the correct way of coding this libglade stuff? Thank you all and best regards! Fabricio Rocha Brasilia, Brasil The RADiola Project - http://radiola.sourceforge.net ___ Novidade no Yahoo! Mail: receba alertas de novas mensagens no seu celular. Registre seu aparelho agora! http://br.mobile.yahoo.com/mailalertas/ ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Glade GUI: changing mechanism
Hi list, Currently, we're using code generation in our project to build the GUI. However, AFAIK there is no more code generation support in Glade, so we would like to build our GUI from a XML file. Can you point me to a guide to make this migration simpler? Best Regards ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
gtk_file_chooser_dialog_new
Hi, I read the documentation about gtk_file_chooser_dialog_new() so I write this line: gtk_file_chooser_dialog_new (_(Save File), NULL, GTK_FILE_CHOOSER_ACTION_SAVE, GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL, GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT, NULL); However, I get four buttons: Cancel, Save, Cancel, Open. It seems like the gtk_file_chooser_dialog_new function always place the Cancel and Open buttons. How can I get only Cancel and Save buttons? Best Regards ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Use of fgets, puts, rewind in Gtk+
On 10/12/06, Sucheta Ghosh [EMAIL PROTECTED] wrote:
Hello,
I wished to read a file and get some lines from there like this:
-
fp=fopen(filename, r);
for(k=0; k8; k++){
n=a[k];
for (i=1; i=n; i++) //Here 'n' is the line number
fgets(s, 100, fp);
puts(s);
rewind(fp);
}
-
-
This is the code snippet, which is working so well after compiling with
'gcc' compiler, but when I added this code inside Gtk+ callback.c, a
runtime error is occuring before execution of 'fgets'. I have already
included 'stdio.h', but even then it is not executing.
Please, copy-paste the error.
Do you have any idea that how to overcome this problem?
Thanks regards,
Sucheta Ghosh
Indian Statistical Institute, Kolkata
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Re: Gnome memory requirements
On 9/14/06, Tomasz Jankowski [EMAIL PROTECTED] wrote: GNOME (sometimes) use more memory, then KDE, but it's almost always faster! Funny, isn't it? I used KDE in version 3.5.x some time ago and I must say, that it was sometimes quite slow on my machine, which isn't old (1GB of ram memory, celeron D ~3GHz). I read, that new Qt 4 is much faster, so far I only read about that, we will se if it's true when KDE 4 will be ready. Next thing is, that GLib memory subsystem don't really free memory on g_free (), but do this when program exits. Memory freed with g_free () is still 'located' for program, which allocated it for first time. Yes, that's true. I suppose that it is done for performance reasons, am I right? This leads me to another question: how can I free (this is, completly deallocate) memory from my process using just Glib? In my opinion article publicated by osnews.com is unreliable because of GLib's memory subsystem behavior. btw, are cario and pango based on GLib too? Yes, from pango.org: Pango depends on 2.x series of the GLib library; more information about GLib can be found at http://www.gtk.org/; But I don't know about Cairo... ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Gnome memory requirements
Hi list, First of all, I have to say that I'm not sure if this is the proper list to make this post. My apologies if it's not. Today I read this article: http://ktown.kde.org/~seli/memory/ via osnews.com I was surprised because the amount of memory taken by Gnome, specially if we compare the results with KDE. I would like to know what are the reasons for this. I use KDE and Gnome with a Debian with 2.6.15.6 and I'm not able to see significant differences that explain this (from a user's point of view). According these tests, Gnome sometimes takes almost 25% more memory than KDE. Some comments at osnews.com suggests that this is because the use of Cairo and Pango. I have no enough experience with gtk/gnome libs, so if there is a gnome developer around here... :) can you through some light here? As gtk-developers is there any recommendations that we should follow in order to take less memory in our applications (although they are not part of the Gnome desktop itself) ? Thanks in advance. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
ProgressBar
Hi All! I would like to know if it is possible that the progress bar behaves like a thermometer, this is, change the color of the progress bar in certain regions, and maybe I want to have a specific text for each of these regions. Which functions should I look for? I see http://developer.gnome.org/doc/API/2.0/gtk/GtkProgressBar.html but I'm not sure what to do... Thanks in advance ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Fwd: Resizing window
-- Forwarded message --
From: Iago Rubio [EMAIL PROTECTED]
Date: Aug 22, 2006 12:40 PM
Subject: Re: Resizing window
To: gtk-app-devel-list@gnome.org
On Tue, 2006-08-22 at 11:54 +0200, Iago Rubio wrote:
On Tue, 2006-08-22 at 09:22 +0200, Fernando Apesteguía wrote:
I'm still looking for a solution. My app has internationalization
support.
So make the window fixed is not possible in order to allow all the
different
messages to fit in the window. I'll read more documentation.
More ideas?
Have you tried to pick the child's requisition and resize the window to
it ?
Try out the example attached.
Sorry, the attachment didn't make it.
// gcc test.c -o test `pkg-config --cflags --libs gtk+-2.0`
#include gtk/gtk.h
void
on_notebook_switch_page (GtkNotebook *notebook,
GtkNotebookPage *page,
guintpage_num,
gpointer user_data)
{
GtkWidget *child;
GtkRequisition requisition;
child = gtk_notebook_get_nth_page (notebook,
page_num);
// pick the child's requisition
gtk_widget_size_request (child, requisition);
// The +10 stuff below is used because we're not taking
// into account the frame's width.
gtk_window_resize (GTK_WINDOW(user_data),
requisition.width + 10,
requisition.height + 10);
}
int main(int argc, char **argv)
{
GtkWidget *window, *window_vbox;
GtkWidget *notebook, *small_label, *big_label;
gtk_init (argc, argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
window_vbox = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER(window), window_vbox);
gtk_widget_show (window_vbox);
notebook = gtk_notebook_new ();
gtk_widget_show (notebook);
gtk_box_pack_start (GTK_BOX (window_vbox), notebook, TRUE, TRUE, 0);
small_label = gtk_label_new (Small label);
gtk_widget_show (small_label);
gtk_notebook_append_page (GTK_NOTEBOOK(notebook),
small_label,
NULL);
big_label = gtk_label_new (
T H I S I S A B I G G E RL A B E L
);
gtk_widget_show (big_label);
gtk_notebook_append_page (GTK_NOTEBOOK(notebook),
big_label,
NULL);
g_signal_connect ( notebook,
switch-page,
G_CALLBACK(on_notebook_switch_page),
window );
g_signal_connect_swapped ( window,
delete_event,
gtk_main_quit,
NULL );
// force it to be smaller than it ought to be
gtk_widget_set_size_request (GTK_WIDGET(window), 100, 50);
gtk_widget_show (window);
gtk_main ();
return 0;
}
--
Iago Rubio
Many thanks Iago. I'll try it when I can get a bit of time.
Best regards
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Re: Resizing window
On 8/22/06, Samuel Cormier-Iijima [EMAIL PROTECTED] wrote: I had the same problem with a FileChooserWidget with an extra GtkExpander widget in it. One solution is to make the window fixed (unresizable). Of course, the downside is that the user can't resize it himself. Let me know if you find another solution! Cheers, Samuel Hi Samuel. I'm still looking for a solution. My app has internationalization support. So make the window fixed is not possible in order to allow all the different messages to fit in the window. I'll read more documentation. More ideas? ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Resizing window
Hi list! I'm developing a simple application. I have a tabbed pane. Some of these tabs are bigger than others, with more text and more widgets. When I click on one of these tabs, the window growns, what is great, but when I click in a smaller tab, the window doen't return to the minimum required size... How can I achieve this behaviour? How can I have always just the size what I need? Best Regards ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
GtkTreeView, GtkListStore and more...
Hi List!
I have a problem dealing with my GtkTreView and related objects.
In a first step, I need to add some rows to my GtkTreeView, so I used a pair
of:
gtk_list_store_append(model,iter);
gtk_list_store_set(model,iter,0,data1,1,data2,-1);
functions inside a loop.
After this, I will need to delete some elements in order to keep my list up
to date. My model is a GtkListStore.
So I need to rewind the Iter and then make it move one element at a time and
checking if it should be removed. I did something like this:
gtk_tree_model_get_iter_first(GTK_TREE_MODEL(model),iter)
for(){
...
if(should_be_deleted)
gtk_list_store_remove(model,iter);
gtk_tree_model_iter_next(GTK_TREE_MODEL(model),iter);
}
But this doesn't work, the first element is always deleted, so I'm not
incrementing the iter properly.
I tried doing:
iter2=iter;
gtk_list_store_move_after(model,iter,iter2);
to make the iter go after iter2 (who has the same position), but once again
the first element is always deleted
Can you help me?
Thanks in advance.
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Fwd: GtkTreeView, GtkListStore and more...
Thanks,
I'll take it into account, but it doesn't fix the problem. The iter is not
incremented... I don't know why. The compilation shows no errors as the
debug terminal does not.
Can you point me to an example on how to traverse a GtkListStore?
Thanks
-- Forwarded message --
From: Iago Rubio [EMAIL PROTECTED]
Date: Aug 17, 2006 6:14 PM
Subject: Re: GtkTreeView, GtkListStore and more...
To: gtk-app-devel-list@gnome.org
On Thu, 2006-08-17 at 17:43 +0200, Fernando Apesteguía wrote:
for(){
...
if(should_be_deleted)
gtk_list_store_remove(model,iter);
gtk_tree_model_iter_next(GTK_TREE_MODEL(model),iter);
}
Try:
if(should_be_deleted)
gtk_list_store_remove(model, iter);
else
gtk_tree_model_iter_next(GTK_TREE_MODEL(model),iter);
gtk_list_store_remove() updates the iter to point to the next element,
so you should call gtk_tree_model_iter_next if the list item have not
been deleted. Otherwise you're moving the iter twice - one on remove,
second on gtk_tree_model_iter_next.
Cheers.
--
Iago Rubio
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Fwd: GtkTreeView, GtkListStore and more...
I re-checked my code and I think I fixed it. It was a problem of sorting
(bad sorting, of course). Now it appears to work find.
Thanks for your advices
Best regards
-- Forwarded message --
From: Fernando Apesteguía [EMAIL PROTECTED]
Date: Aug 17, 2006 6:34 PM
Subject: Fwd: GtkTreeView, GtkListStore and more...
To: gtk-app-devel-list@gnome.org
Thanks,
I'll take it into account, but it doesn't fix the problem. The iter is not
incremented... I don't know why. The compilation shows no errors as the
debug terminal does not.
Can you point me to an example on how to traverse a GtkListStore?
Thanks
-- Forwarded message --
From: Iago Rubio [EMAIL PROTECTED]
Date: Aug 17, 2006 6:14 PM
Subject: Re: GtkTreeView, GtkListStore and more...
To: gtk-app-devel-list@gnome.org
On Thu, 2006-08-17 at 17:43 +0200, Fernando Apesteguía wrote:
for(){
...
if(should_be_deleted)
gtk_list_store_remove(model,iter);
gtk_tree_model_iter_next(GTK_TREE_MODEL(model),iter);
}
Try:
if(should_be_deleted)
gtk_list_store_remove(model, iter);
else
gtk_tree_model_iter_next(GTK_TREE_MODEL(model),iter);
gtk_list_store_remove() updates the iter to point to the next element,
so you should call gtk_tree_model_iter_next if the list item have not
been deleted. Otherwise you're moving the iter twice - one on remove,
second on gtk_tree_model_iter_next.
Cheers.
--
Iago Rubio
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Fwd: Fwd: Systray icon..
I have no idea.. never heard before. Tip: If you need help on using eggtrayicon, see the jabber code ;) Regards -- Forwarded message -- From: Enrico [EMAIL PROTECTED] Date: Aug 13, 2006 12:27 PM Subject: Re: Fwd: Systray icon.. To: gtk-app-devel-list@gnome.org Fernando Apesteguía pronuncio' le seguenti parole il 11/08/2006 17:09: Using eggtrayicon.c and eggtrayicon.h Best regards Many thanks for the help! I have noticed that there is also an edgestatusicon.c and an edgestatusicon.h, what is the difference? Thanks Enrico ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Fwd: Systray icon..
Using eggtrayicon.c and eggtrayicon.h Best regards -- Forwarded message -- From: Enrico [EMAIL PROTECTED] Date: Aug 11, 2006 5:05 PM Subject: Systray icon.. To: gtk-app-devel-list@gnome.org Hi at all! How can I display an icon in the system tray without using GtkStatusIcon (I've only GTK 2.8). Many thanks! Enrico ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Fwd: Which widget should I use?
Ok, Many thanks I think I'll use a GtkTreeView. Best Regards -- Forwarded message -- From: Guy Rouillier [EMAIL PROTECTED] Date: Aug 9, 2006 4:00 AM Subject: Re: Which widget should I use? To: gtk-app-devel-list@gnome.org Fernando Apesteguía wrote: Hi list! I need to represent some data in my application. The data is actually a trace of functions. The size of the list is not fixed, but it has a limit of 200 elements. When the 200 limit is reached, I clear the older element and then add the new one. I have the list in a file (from procfs) and now I need to show it. I thought about to draw the name of the function inside a rectangle and then an arrow pointing to the next element. Something like this: __ |func1| --- |func2| -- But I don't know what kind of widget I need to use. Maybe this is not the best way to represent this... should I use a treeview to show the list? Which are the advantages? Well, unless you have a phenomenally wide screen, 200 boxes pointing to each other as you depict above will never fit. Besides, once you get above 5-10 boxes, comprehension begins to plummet. I'd just put them in a simple list, in whatever order makes sense to your audience (first to last or last to first.) You can do that with a tree view backed by a list store. -- Guy Rouillier ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Which widget should I use?
Hi list! I need to represent some data in my application. The data is actually a trace of functions. The size of the list is not fixed, but it has a limit of 200 elements. When the 200 limit is reached, I clear the older element and then add the new one. I have the list in a file (from procfs) and now I need to show it. I thought about to draw the name of the function inside a rectangle and then an arrow pointing to the next element. Something like this: __ |func1| --- |func2| -- But I don't know what kind of widget I need to use. Maybe this is not the best way to represent this... should I use a treeview to show the list? Which are the advantages? Thanks in advance. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Fwd: threads gtk
I'm not sure about what are you asking...
Bur I think that you should check the fork() return value in order to guess
if you are the parent or if you are the child (forked) process.
In addition... you could consider to use GThreads instead of the libc fork()
system call. It's not a good idea to mix different API's.
Here is a link you can take a look:
http://developer.gnome.org/doc/API/2.0/glib/glib-Threads.html
Regards
-- Forwarded message --
From: chabayo [EMAIL PROTECTED]
Date: Aug 5, 2006 6:22 PM
Subject: threads gtk
To: gtk-app-devel-list@gnome.org
Hello, i'll ask for help with gtk threading.
The rules of my template:
Create an output Window.
Listen on a Socket for commands.
Listen on a Socket for data.
I wanna have 3 threads - naturally.
Therefor i built that scheme:
main () {
...
/* init threads */
g_thread_init(NULL);
gdk_threads_init();
...
if ( ! pid ) {
pid_t pid=fork ();
gdk_threads_enter ();
...
gdk_threads_leave ();
exit ( 0 ); }
else {
pid_t pid=fork ();
gdk_threads_enter ();
...
gdk_threads_leave ();
exit ( 0 ); }
}
...somebody will help me that to trick??
nynhjan
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Fwd: glade begginer - callbacks.c
In general, don't write anything in those files marked as generated by glade. Most of them will be overwritten. (see the disclairmer at the top of the file). Instead, you could call the initialization functions from main.c before you run into the gtk_main loop. Best Regards -- Forwarded message -- From: nuser [EMAIL PROTECTED] Date: Jul 19, 2006 12:56 AM Subject: glade begginer - callbacks.c To: gtk-app-devel-list gtk-app-devel-list@gnome.org hi, my application is writen in c, and I use a file for the functions, another one to hold the several structs are being used (using typedef), and the functions prots. another application uses these methods to manipulate data. so in the other source.c, in the main() function i declared the pointers to those custom data types (the structs), and include the header file I wrote. this way all the menu options know that those functions I tell them to run, and the data types I give as args, they exist somewhere. my problem, i use anjuta and open glade from there when I need to edit something on the GUI. I don't know yet what each file does on this default template glade uses to save projects (on anjuta i started a GTK2 APP on the wizard). where should i put: - the declaration of those (pointers to) structs i'm going to use? - where should i put those functions that manipulate data (create an instance of those structs, destroy them, add information, retrieve information), and that are going to be called from the GUI widgets (buttons, etc)? - depending on what is on certain data field of a given struct (those that I made, which sometimes create sub structs that are another custom type of data), some of these widgets may or may not be active (clickable, etc). so forgive me if these are annoying and frequent questions, but i 'm somewhat lost. thanks!! ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Re: periodically check if a service is running
Maybe you are looking for g_timeout_add function
http://developer.gnome.org/doc/API/2.0/glib/glib-The-Main-Event-Loop.html#g-timeout-add
Regards
On 7/13/06, rupert [EMAIL PROTECTED] wrote:
Hello,
imm trying to create a small window that shows me if a serice is running
and
displays a small icon that shows the status
i created this function that checks if a PID is there:
gint check_samba(){
gint smb_pid2;
gchar check_smb_cmd[512];
sprintf(check_smb_cmd, cat /var/run/samba/smbd.pid 2/dev/null);
//g_print(%s, check_smb_cmd);
smb_pid2 = system(check_smb_cmd);
//g_print(%s, smb_pid2);
return smb_pid2;
}
the function is called here:
gint smb_pid;
smb_pid=check_samba();
//g_print(PID: %i, smb_pid);
//while(1){
if(smb_pid 0)
{
image1 = g_object_new(GTK_TYPE_IMAGE,file,
pics/ledgreen.png,
NULL);
}else{
image1 = g_object_new(GTK_TYPE_IMAGE,file, pics/ledred.png,
NULL);
}
//}
gtk_widget_show (image1);
So how can I check and if neccessary change the picture lets say every
each
2 seconds?
I thought i could use an endless while loop, but that didnt worked.
Also the PID gets displayes when I call the function, but a g_print(PID:
%i, smb_pid); give me (null)
has been quite a while since i worked with C, so this may be a dump error
by
me.
thx for your help
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Re: GNOME tray
Try with GtkStatusIcon http://developer.gnome.org/doc/API/2.0/gtk/GtkStatusIcon.html you can also use the eggtrayicon.c and eggtrayicon.h if you have an older Gtk version. This last approximation works on kde (sorry, I don't remember the version... some of the newest that Gentoo uses) Regards On 7/13/06, César Leonardo Blum Silveira [EMAIL PROTECTED] wrote: Hello, How can I make my app appear on the GNOME system tray? If I can make it, will it also work on KDE and other environments were there is a system tray? Thank you, César B. S. ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Re: Do GTKhave tabbed pane or multi-page or such?
Are you looking for GtkNotebook? http://developer.gnome.org/doc/API/2.0/gtk/GtkNotebook.html Remember that the Guideline suggests not to use this if there are a lot of tabs and they need to be scrolled... if that is the case, then use a list: http://developer.gnome.org/projects/gup/hig/1.0/controls.html#controls-notebooks Regards On 7/5/06, justforfun [EMAIL PROTECTED] wrote: I am using GTK to develop a GUI for a low level app on Linux, so far so good. However, my app grows, I need more and more display capabilities. One window seems not having enough space... I have checked the tutorial on gtk.org, could not find abbed pane or multi-page or such. Am I missing something? Any help will be appreciated!!! Thanks! ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Re: gtk_statusbar!
As I previously said, you should call to gtk_main_iteration after you do a
GUI change (update the gtk_statusbar, update a label, whatever...). If not,
the GUI will be updated when the control is out of the callback (and you
call to real_operation() from a callback)
Try with the links I posted before.
Regards
On 6/30/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:
I'm new in gtk develop...so i'll need a bit more help!!
Where do i've to include this part of code??
this is mine...
on_button1_activete
{
novd=real_opration(file);
}
int real_operation_file
{
fgets(fp,200,registro) /*read number1*/
gtk_statusbar_push(reading numeber1)
gtk_statusbar_pop()
fgets(fp,200,registro) /*read number2*/
gtk_statusbar_push(reading numeber2)
gtk_statusbar_pop()
fgets(fp,200,registro) /*read operation*/
if(strstr(operation,sum)
{
suma=num1+num2
gtk_statusbar_push(operating..)
}
it onmy writes in the status bar operating...
pleas,help me!!
Mensaje citado por Fernando Apesteguía [EMAIL PROTECTED]:
That's because you are calling real_opration() from the button callback.
So
the event loop is not running and it can't update your GUI. You should
call
gtk_main_iteration while gtk_events_pending==true
more at
http://developer.gnome.org/doc/API/2.0/gtk/gtk-General.html#gtk-events-pending
and
http://developer.gnome.org/doc/GGAD/sec-mainloop.html
Regards
On 6/29/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:
Hi everyone!
I built a gtk_application with glade,it's a main window with menu.Wheni
select
a menu option, my program opens a new window with entries and buttons.
In the entry i write the name of a file to open.
This file has the structure:
number1 (ex.25)
number 2 (ex.34)
operation (product)
after writing the name,i push the button and it's called the function
real_opration()
This function mekes a lot of things,but the first one is read the
numbers
of
entry_file and the opration.
i'd like that in the status bar of this window(not main_window),it'll
be
written...
reading number 1...
reading number 2...
operating..
End
i tried but only is written End.
How can i change the content of statusbar,during reading the
entry_file??
thanks a lot
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Re: gtk_statusbar!
That's because you are calling real_opration() from the button callback. So the event loop is not running and it can't update your GUI. You should call gtk_main_iteration while gtk_events_pending==true more at http://developer.gnome.org/doc/API/2.0/gtk/gtk-General.html#gtk-events-pending and http://developer.gnome.org/doc/GGAD/sec-mainloop.html Regards On 6/29/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hi everyone! I built a gtk_application with glade,it's a main window with menu.When i select a menu option, my program opens a new window with entries and buttons. In the entry i write the name of a file to open. This file has the structure: number1 (ex.25) number 2 (ex.34) operation (product) after writing the name,i push the button and it's called the function real_opration() This function mekes a lot of things,but the first one is read the numbers of entry_file and the opration. i'd like that in the status bar of this window(not main_window),it'll be written... reading number 1... reading number 2... operating.. End i tried but only is written End. How can i change the content of statusbar,during reading the entry_file?? thanks a lot ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Re: where is GtkStatusIcon
I had the same problem, finally solved with eggtrayicon.c and the proper.h I'm not sure where I found it. But try in: http://svn.ndesk.org/ndesk/nbind/ngtkext/eggtray/glue/eggtrayicon.c http://svn.ndesk.org/ndesk/nbind/ngtkext/eggtray/glue/eggtrayicon.h It worked fine for me :) Best regards On 6/27/06, zhang yang [EMAIL PROTECTED] wrote: I have read gtk-reference on www.gtk.org. I found GtkStatusIcon - Display an icon in the system tray I want to set a icon in my tray,but I cann't find the difinition of GtkStatusIcon in gtk-devel package.I use suse-10 with gtk2-2.8.3-4.Why ?Can anyone tell me.Thanks in advance! ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Simple Yes/No dialog
There is something named GnomeDialog with Accept and Cancel buttons, but it is marked as deprecated in my Glade 2.10 so you should use it More ideas? -- Forwarded message -- From: [EMAIL PROTECTED] [EMAIL PROTECTED] Date: Jun 16, 2006 5:50 PM Subject: Simple Yes/No dialog To: gtk-app-devel-list@gnome.org Ok, you guys were a great help with my last question :) Does GTK have a simple blocking yes/no dialog? Something that will return true or false, or similar? I could write my own really quickly, but I was kinda hoping GTK would save me a few lines of code. ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
C/GTK question
Please, refer to some C tutorials and handbooks on Internet. This is a very basic question. You should include .h files, not .c . I recommend that you read first to learn C and then to learn GTK. I liked C Course by Dave Marshal and Advanced Linux Programming as well, both available on Internet. Best regards -- Forwarded message -- From: Matías Torres [EMAIL PROTECTED] Date: Jun 15, 2006 5:08 PM Subject: C/GTK question To: gtk-app-devel-list@gnome.org I'm building an application in C that uses GTK. The reason i'm doing this is to learn GTK (and C as well) the main problem I've found is that i write all the GTK code in only one file and is getting too da## big, so i tried to divide the GTK code in different files, but it seems i'm do not understand C that good. This is what i did: global.c GtkWidget *mainWindow gtkarch1.c gtkarch2.c gtkarch3.c gtkarch4.c /* Al this files uses the mainWindow variable, this is what i do: gtkarchX.c #include global.c GtkWidget *mainWindow */ ant then the main.c file which looks like this: main.c #include gtkarch1.c #include gtkarch2.c #include gtkarch3.c But the compiler gives me an error, which I understand but i don't know how to solve it, that says that i'm redefining the variables declared in global.c in each gtkarchX.c So Help? please? ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
using gtk preffix, it's ok??
Only for my curiosity... what does egg means? I remember that I asked this to myself when I used eggTrayIcon :) Best regards -- Forwarded message -- From: John (J5) Palmieri [EMAIL PROTECTED] Date: Jun 6, 2006 11:29 PM Subject: Re: using gtk preffix, it's ok?? To: Alexandre [EMAIL PROTECTED] Cc: gtk-app-devel-list@gnome.org On Tue, 2006-06-06 at 15:04 -0300, Alexandre wrote: Hi I'm in a project, to make a library with scientific widgets for gtk, and I want to know if it's ok to use the gtk preffix in the functions and objects. Or we have to use another preffix, since it's not official of gtk?? Thanks, Alexandre. Don't use the gtk namespace. We don't even use the gtk namespace when developing new widgets. We use the egg namespace and then rename everything when it gets merged in. -- John (J5) Palmieri [EMAIL PROTECTED] ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Xlib, thread and gnome
That's a synchronization problem. I experimented something similar a few
time ago.
The problem with Xlib is because probably you are not returning from a
callback or you take too long to go back and return to gtk.
If you are attempting to access gtk widgets from other thread than the
main one, you should prevent other threads access with gdk_threads_enter
and gdk_threads_leave as you did for gtk_main()
For instance, if your secondary thread updates a gtk_label you should do:
gdk_threads_enter();
gtk_label_set_text(label, text);
gdk_threads_enter();
Best regards.
PS: I'm not an expert at all... if I'm wrong, my apologies for all of the
list :)
-- Forwarded message --
From: nik600 [EMAIL PROTECTED]
Date: 15-may-2006 14:12
Subject: Xlib, thread and gnome
To: gtk-app-devel-list@gnome.org
hi
i am developing an application with gtk and thread.
I've received some Xlib: unexpected async reply errors and looking on
the web i've see that i must use this code:
int
main (int argc, char *argv[])
{
GtkWidget *window;
/* init threads */
g_thread_init(NULL);
gdk_threads_init();
/* init gtk */
gtk_init(argc, argv);
window = create_window();
gtk_widget_show(window);
gdk_threads_enter();
gtk_main();
gdk_threads_leave();
return 0;
}
i've tried to add this code at my application but when i try to
execute it i get a segmentation fault error...
this is the reports of gdb:
Starting program:
/home/programmi/nik_stresser/nik_stresser/bin/nik_stresser_gtk
[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 2739)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 16384 (LWP 2739)]
0x40037a12 in pthread_mutex_lock () from /lib/libpthread.so.0
(gdb) bt
#0 0x40037a12 in pthread_mutex_lock () from /lib/libpthread.so.0
#1 0x40731cc5 in g_mem_chunk_new () from /usr/lib/libglib-2.0.so.0
#2 0x4071e809 in g_hash_table_size () from /usr/lib/libglib-2.0.so.0
#3 0x4071de12 in g_hash_table_insert () from /usr/lib/libglib-2.0.so.0
#4 0x40719073 in g_quark_to_string () from /usr/lib/libglib-2.0.so.0
#5 0x40718ec8 in g_quark_from_static_string () from /usr/lib/libglib-
2.0.so.0
#6 0x406f2b72 in g_type_init_with_debug_flags () from
/usr/lib/libgobject-2.0.so.0
#7 0x406f2d02 in g_type_init () from /usr/lib/libgobject-2.0.so.0
#8 0x405fb554 in gdk_pre_parse_libgtk_only () from /usr/lib/libgdk-
x11-2.0.so.0
#9 0x4042f6e3 in gtk_disable_setlocale () from /usr/lib/libgtk-x11-2.0.so.0
#10 0x4042f928 in gtk_disable_setlocale () from /usr/lib/libgtk-x11-2.0.so.0
#11 0x4073805b in g_option_context_parse () from /usr/lib/libglib-2.0.so.0
#12 0x4042fbce in gtk_parse_args () from /usr/lib/libgtk-x11-2.0.so.0
#13 0x4042fc06 in gtk_init_check () from /usr/lib/libgtk-x11-2.0.so.0
#14 0x4042fc56 in gtk_init () from /usr/lib/libgtk-x11-2.0.so.0
#15 0x0804cf5a in main (argc=1, argv=0xba84) at
src/nik_stresser_gtk.c:336
(gdb)
can you help me please? where am i wrong? thanks nik
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Gnome Help
Hi, I would like to write the gnome help for a little application that I'm developing, but I can't find any tutorials. At developer.gnome.org I only found routines for displaying help, but... how should I write the help? Is it XML or HTML? Thanks in advance. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Directory tree library?
You should use a GtkTreeView object. Read more at: http://developer.gnome.org/doc/API/2.0/gtk/TreeWidgetObjects.html Best regards -- Forwarded message -- From: raul o [EMAIL PROTECTED] Date: 08-may-2006 15:47 Subject: Directory tree library? To: gtk-app-devel-list@gnome.org Hello people: I must implement a directory tree and I do not know by where to begin. Somebody knows a library for GTK+ that makes that task? Thanks RO ___ Win tickets to the 2006 FIFA World Cup Germany with Yahoo! Messenger. http://advision.webevents.yahoo.com/fifaworldcup_uk/ ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Gthreads again
Hi, I wrote a mail some time ago, but nobody answered me :( My problem is that I had two threads. The second one was a pthread. I performed and exit from a callback, so I had to pthread_cancel the secondary thread to avoid a race condition and an eventual app crash. Now, I'm using GThreads. I don't perform a pthread_cancel nor an equivalent for GThreads, but the application appears to run well. Does gtk_main_quit() kill the secondary thread properly or should I expect a crash of my application? ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Gthreads again
The main thread is the only one that is running inside the gtk_main loop. The secondary thread is only reading files. So if I do a gtk_main_quit() the secondary thread will be no longer running because I have not a gtk_main loop, right? If I'm right why I had to explicitly kill the other thread when it was created with pthread instead of g_thread? -- Forwarded message -- From: Tristan Van Berkom [EMAIL PROTECTED] Date: 24-abr-2006 19:21 Subject: Re: Gthreads again To: Fernando Apesteguía [EMAIL PROTECTED] Cc: gtk-app-devel-list@gnome.org Fernando Apesteguía wrote: [...] Now, I'm using GThreads. I don't perform a pthread_cancel nor an equivalent for GThreads, but the application appears to run well. Does gtk_main_quit() kill the secondary thread properly or should I expect a crash of my application? Threads are allowed to run whether there is a GMainLoop, gtk_main() or whatever else running in any other thread; if you are running gtk_main() from a created thread; gtk_main_quit will not kill its own thread. Cheers, -Tristan ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Gthreads again
And how to kill the gthread if there is not something like pthread_cancel? (Thanks for your patience) Best regards -- Forwarded message -- From: Tristan Van Berkom [EMAIL PROTECTED] Date: 24-abr-2006 20:04 Subject: Re: Gthreads again To: Fernando Apesteguía [EMAIL PROTECTED] Cc: gtk-app-devel-list@gnome.org Fernando Apesteguía wrote: The main thread is the only one that is running inside the gtk_main loop. The secondary thread is only reading files. So if I do a gtk_main_quit() the secondary thread will be no longer running because I have not a gtk_main loop, right? Wrong, the main thread is not running inside the gtk_main loop, the gtk_main is running inside an arbitrary thread (happens to be the main one); if you call gtk_main_quit(); then gtk_main() (in the main thread) will return and the main thread will continue to execute (typicly untill the return 0 a few lines later on). If I'm right why I had to explicitly kill the other thread when it was created with pthread instead of g_thread? There is no reason why you dont have to explicitly kill the GThread, if there is a race condition with your old code, there is still a race in the GThread version. Cheers, -Tristan ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
refreshing widgets from callback
Hi,
I had a function to refresh some widgets. Inside this function I perfomed a
gdk_threads_enter() / gdk_threads_leave() to prevent access from the
secondary thread.
update()
{
gdk_threads_enter()
...
...
gdk_threads_leave()
}
I wanted to reuse this function from a callback, but since callbacks run
inside a gdk lock I should remove my own lock to avoid a deadlock problem.
So I move the lock out of the function:
gdk_threads_enter()
update()
gdk_threads_leave()
This works fine and solves my problem. Should I assume is not a good
practice (for reusing at least) to lock gdk inside a function?
Am I confussing concepts? Is there a better way to do this?
I mean that it is possible that some code in update() could be done outside
of the lock... and if it can, it should be done outside to not locking the
other threads for a long time, right? (extrictly more time than necessary)
Best regards!
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List of functions available against gtk/glib version(s)?
Look in your gtk headers to know what is available and what is not. At least I do this. Best regards! -- Forwarded message -- From: Justin Clift [EMAIL PROTECTED] Date: 18-abr-2006 14:07 Subject: List of functions available against gtk/glib version(s)? To: GTK App Dev Mailing List gtk-app-devel-list@gnome.org -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi all, Just tried compiling an app on Solaris 10, that I've been developing on Linux. A _bunch_ of errors ensured, mainly due to my using glib/gtk functions that are in the (newer) versions installed on my Linux box. Looking through the html docs for some gtk functions, some functions do mention when they've become available. However, a lot of functions (i.e. the GIO Channel stuff) don't. Does anyone have, or know of, any kind of comprehensive list of which functions are/aren't available for a specific version of GLib/GTK? It would be really helpful. :) Regards and best wishes, Justin Clift -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFERNZ1FAuZn5lS2IMRAvT5AJ9ZMVejbcMx0CyHSg1DPtK8uvFqaQCgwoPK qoK8WeX1EEsdZdQHpql+rDw= =Mdyu -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 ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Xlib: unexpected async reply
I think it's better you put some pieces of code so more people can help you. I'm not an expert, but basically, you should block other threads when you want to access GtkWidgets, e.g. gdk_threads_enter() gtk_label_set_text(my_label,my_text); gdk_threads_leave() And try to return to GTK as soon as possible when you are inside a callback or event handler. A search in Google revealed, this kind of error with Xlib is usually related to a function that doesn't return or makes too long before return. Some parts of the Xlib are implemented as synchronous (message queues, for example) and this error occurs when an asynchronous signal is received while processing in synchronous mode. Try to find if you are returning from all of your callbacks. Best regards! ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Xlib: unexpected async reply
Hi list!
I get this error when runing my GTK application:
Xlib: unexpected async reply (sequence 0xdfd)!
(Te sequence number varies.)
A little explanation about the application:
It runs two threads. One of them is runing inside the gtk_main() loop.
The other one, periodically reads from different files and updates the
labels in the window. I use gdk_threads_enter() and gdk_threads_leave() to
block the other thread.
The aplication has a Tabbed Pane. Each tab shows information from a
different file.
Now, I get this error when I try to see the information showed by the last
tab I added. Basically, the cycle I implement is (pseudocode):
infinite_loop{
...
if tab1_is_visible{
update_tab
}
...
pause;
}
and update_tab performs:
read_value_from_file();
gdk_threads_enter();
update_labels();
gdk_threads_leave();
Since the error is realted to Xlib, I think I'm doing something wrong about
multi-threading, but I can't find what.
I'm doing as I did with the other tabs and I hadn't any errors like this
I've read http://mail.gnome.org/archives/gtk-list/1999-July/msg00438.htmlbut
I think this does not match my problem. I'm not calling to gtk
functions
from callbacks or signal handlers.
Any suggestions?
Best regards!
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Xlib: unexpected async reply
Hi, it's me again... now a bit embarrassed I found the problem after more and more debugging. The read_data_from_file() function was a function with variable number of parameters implemented with va_list... Due to a stupid mistake this function did not return when a certain number of parameters was passed and then the function run into an infinite loop. So I suppose that the message queue of Xlib was overflowed in some way. Well, I hope this is helpful for someone with a similar problem :) Best regards! ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Segmentation Fault
Are you dealing with threads? Maybe it's a problem of concurrency. Could you be more precise? Best regards! -- Forwarded message -- From: Sandeep KS [EMAIL PROTECTED] Date: 04-abr-2006 19:31 Subject: Segmentation Fault To: Gtk gtk-app-devel-list@gnome.org Hello everyone, I have written a program using GTK which executes some shellscripts in the background...After the shellscripts complete executing, a window is displayed showing the completion details At this time segmentation fault occurs. Is there anyway to trace the exact cause of the segmentation fault... I tried gdb, but it didn't show any error while executing the code..The segmentation fault occured when the execution went to loop after displaying the final window and waiting for user's interaction... How can i find the reason for the segmentation fault? Thanking you in advance... Sandeep Regards - New Yahoo! Messenger with Voice. Call regular phones from your PC and save big. ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
show/hide widget within other widget
If you expected the user works with the calendar I think you can create it
at start up.
If using the calendar is not usual, maybe you could delay the creation and
when the user enables it, create the calendar and place it in your window.
Creating all widgets at start up is faster for you.. but if you planned to
show only one at a time, it is quite inefficient.
-- Forwarded message --
From: Andreas Kotowicz [EMAIL PROTECTED]
Date: 04-abr-2006 19:36
Subject: show/hide widget within other widget
To: gtk-app-devel-list@gnome.org
I have a main.c file like this:
int main(int argc, char **argv)
{
GnomeProgram *program;
program = gnome_program_init(bla, bla, ..)
create_mainwindow();
gtk_main();
return 0;
}
where create_mainwindow reads like following:
void create_mainwindow (void)
{
GnomeApp *window;
window = create_ui();
GtkWidget *calendar;
calendar = create_calendar();
gnome_app_set_contents(window, GTK_WIDGET(calendar));
gtk_widget_show_all(GTK_WIDGET(window));
}
as you may guess, create_ui just sets up the window with menu and tool
bars, etc.
create_calendar creates a gtkcalendar.
Now in my create_ui function I have a menu option for enabling/disabling
the calendar. as the calendar is enabled by default, how should I now
disable (maybe hide) it? what's the most elegant solution for this
problem? I also think about the possibility to choose from a variety of
widgets to be displayed inside the contents window. and in my eyes it
doesn't make sense to first create all those widgets and then manually
show/hide them as needed (suppose I just want to have one widget at a
time).
I'm welcome for any suggestions,
cheers,
Andreas
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Gthreads
Hi, I'm porting an application from pthread semantic to GThreads framework. I used pthread_cancel(pid) to kill a thread, does exists something similar in gthreads? I've read http://mail.gnome.org/archives/gtk-devel-list/2003-February/msg00082.htmland it appears it doesn't exist. So, if I performed a pthread_cancellation from a callback, how do I perform the same with gthreads? Best regards! ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
GUI construction tips
Hi, I'm creating a GUI with Gtk. I'm using VBoxes and HBoxes, so my app resizes when dpi changes and so on. But I don't like the look of some aspects. For example, If I have a Hbox with two columns and I place two label (one in each column) the label is so close to the window border. So I place additional columns with a label beside the border. The label text is only a space. The effect is that I have now my other labels not close to the border, and it looks nice. But I think this is not the way to manage this in fact I think this is a bad workaround. I didn't see any separator widget. How can I do this? Best regards! ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
GUI construction tips
Yes, I'm using Glade and I knew there was a better way to do this :) Thanks a lot. So i'll try to set padding for my labels. One more thing: what about if my problem now is with vertical alignment? i.e. my labels are so close to the top border of the window. Thanks in advance!! -- Forwarded message -- From: Daniel Pekelharing [EMAIL PROTECTED] Date: 21-mar-2006 13:48 Subject: Re: GUI construction tips To: Fernando Apesteguía [EMAIL PROTECTED] Cc: gtk-app-devel-list@gnome.org It's easy enough to add padding space when packing your label into the box like so: gtk_box_pack_start(GTK_BOX(box), label, FALSE, FALSE, padding) I get the impression however that you are using Glade.. I don't use glade myself but it should be perfectly possible to specify the padding space somewhere in the widget properties editor. Hope this helps.. - Daniel Pekelharing On Tue, 2006-03-21 at 12:13 +0100, Fernando Apesteguía wrote: Hi, I'm creating a GUI with Gtk. I'm using VBoxes and HBoxes, so my app resizes when dpi changes and so on. But I don't like the look of some aspects. For example, If I have a Hbox with two columns and I place two label (one in each column) the label is so close to the window border. So I place additional columns with a label beside the border. The label text is only a space. The effect is that I have now my other labels not close to the border, and it looks nice. But I think this is not the way to manage this in fact I think this is a bad workaround. I didn't see any separator widget. How can I do this? Best regards! ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Problem with GValue
Sorry if this is so trivial... Did you try to g_free it? Best regards! -- Forwarded message -- From: Maciej Piechotka [EMAIL PROTECTED] Date: 17-feb-2006 11:43 Subject: Problem with GValue To: Gtk Mailing list gtk-app-devel-list@gnome.org I'd like to destroy GValue. How should I do it? I cannot find any information about it. ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Threads and waits
Hi, I have an app. that runs two threads, the main one and other thread that collects information from files. I launch the thread by calling pthread_create and here comes my first question ¿Should I use g_thread_create instead? Now I have no problems with these pthreads and I can perform mutual exclusion with gdk_threads_enter() and gdk_threads_leave() so I'm not sure about change the kind of thread. Under some conditions I would like the collector thread to make a pause. I don't know how to do it with POSIX functions. I've seen Glib's API documentation and I'm not sure how could I make this. ¿Should I use a Gcond? As I can see in documentation, g_thread_yield is not recommended to be used. Thanks in advance!! ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
About layouts
Hi ! I'm developing an app with gtk. I use glade for GUI development. My question is about the different kinds of layouts. I would like my app resizes by itself when a label text is really long. I've noticed I can do this by placing a table layout (I think vbox and hbox work well too). In fact, this behaves well even when changing fonts dpi (This is the answer to my question that you can see at http://mail.gnome.org/archives/gtk-app-devel-list/2006-January/msg00064.html ) But my app has a lot of labels and buttons so I estimated I need a lot of layouts creating a complex hierarchy (vbox inside a table layout, inside a hbox, inside a table layout again...) Did I forget a simply way to make this?? Thanks!! ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
About layouts
First of all, thanks for your suggestions. Actually my app. uses a static layout and the GtkLabels inside this, don't grown when the text becomes longer. The same GtkLabel behaves ok if it is inside a GtkTable. So I think I will change the static container. My app uses a menu bar and a GtkNotebook. In every tab, I have several GtkLabels and ProgressBars. So if I choose to use non-static containers I think I'll need two or three GtkTables for each tab.I have three tabs now but it is expected to have at least five. If I change the static layout + label for a deeper containers hierarchy (three levels for example)... will I have a lack of performance when loading the UI? Thanks in advance!!! -- Forwarded message -- From: Gus Koppel [EMAIL PROTECTED] Date: 14-feb-2006 14:30 Subject: Re: About layouts To: gtk-app-devel-list@gnome.org Fernando Apesteguía wrote: I'm developing an app with gtk. I use glade for GUI development. My question is about the different kinds of layouts. I would like my app resizes by itself when a label text is really long. I've noticed I can do this by placing a table layout (I think vbox and hbox work well too). In fact, this behaves well even when changing fonts dpi (This is the answer to my question that you can see at http://mail.gnome.org/archives/gtk-app-devel-list/2006-January/msg00064.html ) But my app has a lot of labels and buttons so I estimated I need a lot of layouts creating a complex hierarchy (vbox inside a table layout, inside a hbox, inside a table layout again...) Did I forget a simply way to make this?? Your question is not quite clear to me. It seems to be about two issues: 1. auto-resizing of labels, 2, what containers to use for your layout. Regarding GtkLabels: automatic resizing is their default behaviour, regardless of which sort of container (Gtktable, GtkVBox, etc.) it is being put into. Example: when working with Glade, just create an empty dialog window. Drop a new GtkLabel into it (directly into the window, without additional layout containers). Make the window as small as possible (not via the minimizie button). You will see that you can't make the window smaller than the dimensions needed by the GtkLabel to have its text (should be label1 or similar) fully visible. In Glade's properties window, when you type in additional text into the Label property of the GtkLabel, you can see the window grow as you type. Again, this is the default behaviour of GtkLabel (and most other types of widgets as well) and is not bound to particular containers like GtkTables or Boxes. However, if your texts may get really long, this behaviour shouldn't actually be what you want. Especially if the label has disabled its wrapping property, restricting the label text to just one line, the horizontal size requirement by the label may easily exceed the screen's dimensions, making the window wider than the screen as well. This would make your application basically useless. There are three common strategies to consider if you're planning to deal with display of really long texts. They aim at avoiding unrestricted size requests by the GtkLabel: 1. enable the wrap text property of the GtkLabel 2. put the GtkLabel into a GtkScrolledWindow 3. use GtkTextView instead of GtkLabel, with editable property unset. Regarding the other aspect of your question: what layout containers to use and the extent of complexity is determined solely by what layout you actually want to achieve. For instance, having 20 rows with each one consisting of a GtkButton and a GtkLabel next to it, and all widgets aligned vertically, is quite a simple layout. You would only need one GtkTable with 2 columns and 20 rows for it. You could also easily use 10 rows with 4 columns (button, label, button, label) each with the same single table. More complex layouts require additional layout containers, of course. You didn't provide any idea what sort of complex layout hierarchy you want to achieve so I can't give more detailed recommendations. ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
labels and dpi
Yes but... in fact if I make a bigger label and the user changes dpi again, I run into the same problem. My question is if this is fixable? Or can I only make bigger the label? Thanks in advance -- Forwarded message -- From: Ronald Vincent Tarrant [EMAIL PROTECTED] Date: 10-ene-2006 4:39 Subject: Re: labels and dpi To: gtk-app-devel-list@gnome.org Fernando Apesteguía wrote: I have a problem about displaying text on labels. When I change the dpi font configuration, the text doesn't fit the label, so the message appear to be cutted. I would like to know if there is any way to handle this. May be I'm forgetting some gtk_label_set_* function? Have you tried changing the height/width of the label? label.set_size_request(width, height) Or perhaps this is too obvious and I'm going to get flamed for mentioning it. :-) -Ron T. ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
(no subject)
Yes, in fact, callback function does. You cand do something like: my_function(GtkWidget *mycontrol) Best regards!!! -- Forwarded message -- From: kalyani sathiyamoorthy [EMAIL PROTECTED] Date: 10-ene-2006 7:39 Subject: (no subject) To: gtk-app-devel-list@gnome.org is it possible to pass a widget control as a arugument to a function regards kalyani __ Yahoo! DSL – Something to write home about. Just $16.99/mo. or less. dsl.yahoo.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
labels and dpi
2006/1/10, Ronald Vincent Tarrant [EMAIL PROTECTED]: Fernando Apesteguía wrote: Yes but... in fact if I make a bigger label and the user changes dpi again, I run into the same problem. My question is if this is fixable? Or can I only make bigger the label? If you're talking about the width, try adding a space at the end of your string like this: Label It took me a while to figure out what you're talking about, but I remember running into this when populating a menu. Is that what you're doing? If so, that's the only fix I could come up with other than doing a lot of nonsensical calculations with dpi, etc. -Ron T. Actually, I want my app behaves for example like the gnome font dialog. When I change dpi configuration, dialog, gnome panel and others, they expand their widths and heights to fit the text. Did you try it?. Maybe I'm missing some widget property to do this automatically. The other possibility is to code calculations with dpi as you said. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
labels and dpi
Hi, I have a problem about displaying text on labels. When I change the dpi font configuration, the text doesn't fit the label, so the message appear to be cutted. I would like to know if there is any way to handle this. May be I'm forgetting some gtk_label_set_* function? Thanks in advance!! ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Catch signal
Hi, I've developed an app test to catch a delete_event for a window so I can show some messages and then depending on the user answer close or not the window. My question is if there is a way to handle this signal from an external application. This is The application B detects when the delete event has been sent to the application A. Is this possible? Thanks ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
gtk label size
Hi to all of you and Happy new Year! I'm translating my gtk app but I have a doubt: Suppose that the window where labels are located is size-fixed. The problem comes when I create the label longer enough (Great Mistake!!!) for most of languages... Normally the text is something like x but in some .po files, this is translated as xx xxx What is the standard way to handle this? Should I let the string to be truncated by the size of the label? If this is the case, would be a good idea to set a complete tool-tip text? Thanks in advance ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
gtk label size
Many thanks Yeti I tried it but my gtk version doesn't support gtk_label_set_ellipsize(). In fact I'm not sure about my gtk version. I have a gtk-2.0 directory but I have not gtk-config so I can't perform a gtk-config --version Best regards -- Forwarded message -- From: David Necas (Yeti) [EMAIL PROTECTED] Date: 02-ene-2006 18:44 Subject: Re: gtk label size To: Fernando Apesteguía [EMAIL PROTECTED] Cc: gtk-app-devel-list@gnome.org On Mon, Jan 02, 2006 at 06:24:03PM +0100, Fernando Apesteguía wrote: Suppose that the window where labels are located is size-fixed. The problem comes when I create the label longer enough (Great Mistake!!!) for most of languages... Normally the text is something like x but in some .po files, this is translated as xx xxx What is the standard way to handle this? Should I let the string to be truncated by the size of the label? If this is the case, would be a good idea to set a complete tool-tip text? The standard way is to not make windows/labels/whatever fixed-size. If this isn't possible, use ellipsization -- see gtk_label_set_ellipsize(). Whether to add or not to add a tooltip depends on situation, but generally it's a good idea. Yeti -- That's enough. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
GtkStatusIcon
Hi, I'm a bit confusing. I'm developing under Whitbox EL 4. I have this packages installed: gtk2-2.4.13-14 pygtk2-libglade-2.4.0-1 ... ... gtk2-devel-2.4.13-18 gtk2-engines-2.2.0-7.el4 gtk+-1.2.10-33 gtk2-2.4.13-18 As I can see in http://developer.gnome.org/doc/API/2.0/gtk/ it is recommended to use GtkProgressBar instead GtkProgress. I did without problems, and I see GtkStatusIcon in the documentation as a wrapper for eggtrayicon but I have not that .h in my include files. If I have gtkprogreesbar in /usr/include/gtk-2.0/gtk but I have not a gtkstatusicon.h. How is this possible? Am I using a wrong version of gtk? Thanks ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
gtk expander
Hi, I have a problem with gtk expander. I create that object and put it in the window, using Glade. But how can I attach controls to the expander so when I click on it the controls are showed and when click again they aren't? I've visited http://developer.gnome.org/doc/API/gtk/ but there is no information about any Gtk Expander Widget. Can you help me? Thanks!!! ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
systray icon
Hi, Do you know how to find a simple example to make a systray icon in gnome panel? If you can tell me the name of the related functions, I'll search for documentation. Thanks!! ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
systray icon
I've looked for that header file and I have not it installed neither in Ubuntu nor in Whitebox. I found the file in a web page of the GNU project, but don't I need a lib to link against? I downloaded the header, but then Anjuta said the functions I tried to use, were not found. Thanks in advance -- Forwarded message -- From: HuamiSoft Hubert Sokolowski [EMAIL PROTECTED] Date: 16-dic-2005 19:52 Subject: Re: systray icon To: gtk-app-devel-list@gnome.org HI! On Fri, 16 Dec 2005 17:42:24 +0100 Fernando Apesteguía [EMAIL PROTECTED] wrote: Hi, Do you know how to find a simple example to make a systray icon in gnome panel? If you can tell me the name of the related functions, I'll search for documentation. look for eggtrayicon.h -- HuamiSoft Hubert Sokolowski http://www.huamisoft.com/ tel. 501456743 ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
Custom icons
Hi, I'm developing my first serious app for GNOME using gtk and Glib. At this moment, the application works fine but I can set my custom icons. When I run the application, I get this problems: ** (lkmonitor:10713): WARNING **: Couldn't find pixmap file: lkmonitor/gnome-logo-icon-transparent.png ** (lkmonitor:10713): WARNING **: Couldn't find pixmap file: lkmonitor/gnome-ccperiph.png ** (lkmonitor:10713): WARNING **: Couldn't find pixmap file: lkmonitor/gnome-ccperiph.png I'm using Anjuta and Glade to develope this program. I've read a discussion thread between Naba Kumar and Miguel de Icaza but I didn't see the fix for this problem (actually I think this is a problem on libglade, but may be I'm wrong). Can you help me? Thanks ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Custom icons
Its likely the path to your icons isn't right. If your using the glade auto generated c code check the interfaces.c file for a line like this image1 = create_pixmap (window1, project1/blah.png); I have the line: img_cpu = create_pixmap (window1, lkmonitor/gnome-ccperiph.png); but it doesn't work. If you build the project and then try to run it right in that directory Gtk can't find the pixmaps dir. A make install should put it in your path. If you can't get that to work try putting the full path to your icon instead... /home/user/Project/project1/pixmaps/blah.png That should works, but the path should be relative and make use of de --prefix option in configure script. I did: ./configure --prefix=/home/fernape/prueba and copied png files into bin directory with the executable file but still no enjoy. More ideas? Thanks in advance. On 12/11/05, Fernando Apesteguía [EMAIL PROTECTED] wrote: Hi, I'm developing my first serious app for GNOME using gtk and Glib. At this moment, the application works fine but I can set my custom icons. When I run the application, I get this problems: ** (lkmonitor:10713): WARNING **: Couldn't find pixmap file: lkmonitor/gnome-logo-icon-transparent.png ** (lkmonitor:10713): WARNING **: Couldn't find pixmap file: lkmonitor/gnome-ccperiph.png ** (lkmonitor:10713): WARNING **: Couldn't find pixmap file: lkmonitor/gnome-ccperiph.png I'm using Anjuta and Glade to develope this program. I've read a discussion thread between Naba Kumar and Miguel de Icaza but I didn't see the fix for this problem (actually I think this is a problem on libglade, but may be I'm wrong). Can you help me? Thanks ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list -- - Jim Pharis ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
SIGABRT due double free
Thanks, now it appears to works fine. I thought gtk was completly thread safe, but is logic tu use a method for mutual exclusion. Really thanks a lot. We'll meet in my next post :) Best regards!! -- Forwarded message -- From: Andreas Stricker [EMAIL PROTECTED] Date: 24-nov-2005 9:27 Subject: Re: SIGABRT due double free To: gtk-app-devel-list@gnome.org Fernando ApesteguXa schrieb: I'm developing a gtk/gnome application with two threads. An schema of the application is this: [SNIP] thread_func is updating data periodically with a sleep pause. At this point, I suppose the other thread is catching events normally (in fact, tabs of the notebook changes without problems). Well, at short time from run app, I get: *** glibc detected *** double free or corruption (!prev): 0x006115a0 *** Program received signal SIGABRT, Aborted. [SNIP] The curious thing is that I _have not_ any free, realloc or malloc in my code, only those that gtk/glib functions like g_file_get_contents can perform. This looks like a race condition due missing mutual exclusion. Did you read the API documentation and the various tutorials? http://www.gtk.org/api/2.6/gdk/gdk-Threads.html Cheers, Andy ___ gtk-app-devel-list mailing list gtk-app-devel-list@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
SIGABRT due double free
Hi, I'll try to explain my problem as clear as possible:
I'm developing a gtk/gnome application with two threads. An schema of
the application is this:
void thread_func(){
blah
blah
...
}
main(){
blah
blah
...
pthread_create(thread_func);
...
...
gtk_main();
}
thread_func is updating data periodically with a sleep pause.
At this point, I suppose the other thread is catching events normally
(in fact, tabs of the notebook changes without problems). Well, at
short time from run app, I get:
*** glibc detected *** double free or corruption (!prev): 0x006115a0 ***
Program received signal SIGABRT, Aborted.
or
*** glibc detected *** realloc(): invalid size: 0x006122e0 ***
Program received signal SIGABRT, Aborted.
The curious thing is that I _have not_ any free, realloc or malloc in
my code, only those that gtk/glib functions like g_file_get_contents
can perform.
In fact, debugging with gdb and typing a bt after crash, I get:
#0 0x002a97ebb4dd in raise () from /lib64/tls/libc.so.6
#1 0x002a97ebcc8e in abort () from /lib64/tls/libc.so.6
#2 0x002a97eefb41 in __libc_message () from /lib64/tls/libc.so.6
#3 0x002a97ef546f in _int_free () from /lib64/tls/libc.so.6
#4 0x002a97ef5a06 in free () from /lib64/tls/libc.so.6
#5 0x002a9715540f in gdk_region_union ()
from /usr/lib64/libgdk-x11-2.0.so.0
#6 0x002a9715ac19 in gdk_window_invalidate_maybe_recurse ()
from /usr/lib64/libgdk-x11-2.0.so.0
#7 0x002a9715aebc in gdk_window_invalidate_rect ()
from /usr/lib64/libgdk-x11-2.0.so.0
#8 0x002a96e4ecf5 in gtk_notebook_new ()
from /usr/lib64/libgtk-x11-2.0.so.0
#9 0x002a96e50fb8 in gtk_notebook_get_tab_label ()
from /usr/lib64/libgtk-x11-2.0.so.0
#10 0x002a96e5177d in gtk_notebook_get_tab_label ()
from /usr/lib64/libgtk-x11-2.0.so.0
#11 0x002a979c4faa in g_closure_invoke ()
from /usr/lib64/libgobject-2.0.so.0
#12 0x002a979d9b30 in g_signal_has_handler_pending ()
from /usr/lib64/libgobject-2.0.so.0
#13 0x002a979dbcd6 in g_signal_emit_valist ()
from /usr/lib64/libgobject-2.0.so.0
---Type return to continue, or q return to quit---
#14 0x002a979dc023 in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0
#15 0x002a96f2af07 in gtk_widget_size_allocate ()
from /usr/lib64/libgtk-x11-2.0.so.0
#16 0x002a96f208a5 in gtk_vbox_new () from /usr/lib64/libgtk-x11-2.0.so.0
#17 0x002a979c4faa in g_closure_invoke ()
from /usr/lib64/libgobject-2.0.so.0
#18 0x002a979d9b30 in g_signal_has_handler_pending ()
from /usr/lib64/libgobject-2.0.so.0
#19 0x002a979dbcd6 in g_signal_emit_valist ()
from /usr/lib64/libgobject-2.0.so.0
#20 0x002a979dc023 in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0
#21 0x002a96f2af07 in gtk_widget_size_allocate ()
from /usr/lib64/libgtk-x11-2.0.so.0
#22 0x002a96f353b9 in gtk_window_reshow_with_initial_size ()
from /usr/lib64/libgtk-x11-2.0.so.0
#23 0x002a979c4faa in g_closure_invoke ()
from /usr/lib64/libgobject-2.0.so.0
#24 0x002a979d9b30 in g_signal_has_handler_pending ()
from /usr/lib64/libgobject-2.0.so.0
#25 0x002a979dbcd6 in g_signal_emit_valist ()
from /usr/lib64/libgobject-2.0.so.0
#26 0x002a979dc023 in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0
#27 0x002a96f2af07 in gtk_widget_size_allocate ()
---Type return to continue, or q return to quit---
from /usr/lib64/libgtk-x11-2.0.so.0
#28 0x002a96f371d8 in gtk_window_get_position ()
from /usr/lib64/libgtk-x11-2.0.so.0
#29 0x002a979c4faa in g_closure_invoke ()
from /usr/lib64/libgobject-2.0.so.0
#30 0x002a979d9ebc in g_signal_has_handler_pending ()
from /usr/lib64/libgobject-2.0.so.0
#31 0x002a979dbcd6 in g_signal_emit_valist ()
from /usr/lib64/libgobject-2.0.so.0
#32 0x002a979dc023 in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0
#33 0x002a96dc4403 in gtk_container_check_resize ()
from /usr/lib64/libgtk-x11-2.0.so.0
#34 0x002a97d2a606 in g_main_context_dispatch ()
from /usr/lib64/libglib-2.0.so.0
#35 0x002a97d2c21e in g_main_context_acquire ()
from /usr/lib64/libglib-2.0.so.0
#36 0x002a97d2c58a in g_main_loop_run () from /usr/lib64/libglib-2.0.so.0
#37 0x002a96e39471 in gtk_main () from /usr/lib64/libgtk-x11-2.0.so.0
#38 0x00406209 in main (argc=1, argv=0x7fb798) at main.c:121
am I doing something wrong? I don't know what to do.
I have:
glib2-2.4.7-1
glibc-2.3.4-2
gtk2-2.4.13-14
gtk-engines-0.12-5
Any ideas?
PS: I'm so, so sorry for this terrible long mail.
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