[Anjuta-list] tutorial problem

[Kyle Davenport <kdd quickening hn org>]

ok, I'll admit it.  Even tho I have been programming for 24 years, I'm a newbie to gnome programming.  I naturally took the plunge starting with the tutorial by Ishan Chattopadhyaya.   I followed the helloworld example to the letter and altho it would build, it crashed every time I ran it and clicked "OK".  WTF?  How could this be bad?:

        void 
	on_BT_OK_clicked (GtkButton *button, gpointer user_data) 
	{ 

		GtkWidget *entry = lookup_widget (GTK_WIDGET(button), "ENTRY"); 
		GtkWidget *msgbox = gnome_app_new("Hello World", "Hello World"); 
		gchar *text1, *text2; 

		text1 = gtk_entry_get_text (GTK_ENTRY(entry)); 
		text2 = strcat ("Hello, ", text1); 
		gnome_app_message (GNOME_APP(msgbox), text2); 

	} 

Hours later I localized it to the strcat function, and nothing I could do to the variables or replacing strcat with sprintf or whatever would stop it crashing. If I just used text1 in gnome_app_message or defined text2 as a constant character string it would work.   Finally I thought of a "gnome-way" solution.  I used g_strconcat instead of strcat, and that worked fine.   Here's my replacement code:

void
on_BT_OK_clicked                       (GtkButton       *button,
                                                         gpointer         user_data)
{
		GtkWidget *entry = lookup_widget (GTK_WIDGET (button), "ENTRY"); 
	        gchar *text1 = "Hello,"; 
		gchar *text2 = gtk_entry_get_text (GTK_ENTRY(entry));

		text1 = g_strconcat (text1, text2, NULL);
	        GtkWidget *msgbox = gnome_app_new("Hello World", "Hello World");
		gnome_app_message (GNOME_APP(msgbox), text1); 
}

Pretty discouraging for a beginner!  I'd still like to know what caused the problem.

Kyle