Re: Memory question
David Rosal [EMAIL PROTECTED] writes: Allin Cottrell wrote: gchar *text = g_strdup_printf(banana %d, i); gtk_entry_set_text(GTK_ENTRY(entry), text); g_free(text); Is the above code really safe? You're passing the address of text to the function gtk_entry_set_text(). Next you g_free() that address, so AFAIK the memory manager marks it as free. Isn't it dangerous? I mean, after g_free() any call that requests for memory (g_strdup, g_malloc, ...) can overwrite that memory chunk, changing the text in the GtkEntry. Am I right? No. gtk_entry_set_text() will keep its own copy of the text internally, which is contained within the GtkEntry object. Once you set the text, you can safely free your copy. If it didn't work this way, you would quickly run into all sorts of memory leaks. Regards, Roger -- Roger Leigh Printing on GNU/Linux? http://gimp-print.sourceforge.net/ Debian GNU/Linuxhttp://www.debian.org/ GPG Public Key: 0x25BFB848. Please sign and encrypt your mail. ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Memory question
Colossus wrote: Hi, Am I doing the same ( memory leaking ) with g_strdup_printf ? If so what is the better way to write the following code: ? response = ShowGtkMessageDialog (GTK_WINDOW (MainWindow),GTK_DIALOG_MODAL,GTK_MESSAGE_ERROR,GTK_BUTTONS_OK, g_strdup_printf (%s,g_strerror(errno)) ); return; gchar *msg = g_strdup_printf(%s, g_strerror(errno)); response = ShowGtkMessageDialog(GTK_WINDOW(MainWindow), GTK_DIALOG_MODAL, GTK_MESSAGE_ERROR, GTK_BUTTONS_OK, msg); g_free(msg); return; Cheers, ~david ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Error while cross-compiling x11
Hi friends, Im now trying to cross-compile the x-11 source to tiny-x for arm-architecture.What i did was in path x11/xc/config/cf/ i included the host.def file and also changed the cross.def file, but it shows error while compiling. Is there any seperate tool-chains for this?.Plz let me know if anybody have experienced this problem. Thanks in advance. regards, sadheeskumar ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Error while cross-compiling x11
2005/9/28, sadhees kumar [EMAIL PROTECTED]: Hi friends, Hi Im now trying to cross-compile the x-11 source to tiny-x for arm-architecture.What i did was in path x11/xc/config/cf/ i included the host.def file and also changed the cross.def file, but it shows error while compiling. Is there any seperate tool-chains for this?.Plz let me know if anybody have experienced this problem. sorry, what this has to do with a ML gtk-app-devel Writing Apps with GTK+ ? -- Gian Mario Tagliaretti PyGTK GUI programming http://www.parafernalia.org/pygtk/ ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
gtk label problem
Hi all, I am very new to developing applications with gtk. I am developing SIP stack as a gui using gtk+-devel-1.2.10 I have a label widget which displays a text (in my case, it is the status of the SIP call) Depending on the status of the call, the text in the label widget should change. The problem I am facing is that the text is changing some times and not changing other times. Do I need to do a refresh for the label widget/entire window? I tried with gtk_widget_queue_draw(GTK_WIDGET(label)), but in vain. Suggestions are required. Thanks in advance, B.Suganya ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Memory question
On Wed, 28 Sep 2005, David Rosal wrote: Allin Cottrell wrote: gchar *text = g_strdup_printf(banana %d, i); gtk_entry_set_text(GTK_ENTRY(entry), text); g_free(text); Is the above code really safe? Yes! A function such as gtk_entry_set_text() is bound to make a copy of the string offered by the caller. Or at any rate it is bound _not_ to attempt to free that string. Think about it: suppose you pass gtk_entry_set_text() a string literal: gtk_entry_set_text(GTK_ENTRY(entry), foo); If gtk tried to free foo you'd get an immediate crash, since this is not storage obtained via malloc. So we can infer that gtk (which is designed by wise and sane coders!) will not attempt to free strings that we pass into such functions. So we can further infer that it is our business as callers of gtk functions to free strings that we pass to such functions, if we created these strings via functions that allocate storage -- i.e. that directly or indirectly call the C library function malloc() -- e.g. g_strdup(), g_strdup_printf() and friends. Allin Cottrell ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
