Re: GList

[Shaun McCance <shaunm wolfram com>]

On Wed, 2003-07-30 at 00:02, umesh wrote:
> Using following code combo box should fill with values 0,1,2,3 rather
> it is filling with values is 3,3,3,3(last number)
> What could be the problem? please help me in this regard.
>  
> combo = lookup_widget(GTK_WIDGET(button), "combo1");
> GList  *list=NULL;
> char s[0];
> int j;
>  
> for (j=0;j<=3;j++)
>   {
>     sprintf(s,"%d",j);
>     list=g_list_append(list,(void *)s);
>   }
>  
>   gtk_combo_set_popdown_strings (GTK_COMBO (combo),list);
>   g_list_free(list);

First, please don't send HTML email to mailing lists.  Particularly the
crappy non-accessible HTML generated by Outlook.

The problem is that you're appending a pointer to the GList, then
writing to that memory location, then adding that same pointer again,
etc.  s is a pointer to a char.  It's a memory address.  The line

sprintf (s, "%d", j);

writes the stringified version of j into the memory pointed to by s. 
This doesn't at all change where s is pointing, only what's there. 
Basically, you're adding the same thing four times.

--
Shaun