Re: Segfault and cheep mend of gtk_combo_box_get_active_text

[Juergen Dankoweit <Juergen Dankoweit T-Online de>]

Good morning Oliver,

Am Sonntag, den 01.05.2005, 08:16 +0200 schrieb Olivier:
> Dear Matthias,
>
>    Below is a simple program where gtk_combo_box_get_active_text
> creates a segfault, as well as my (hacking) way of mending it.
> Two other persons from gtk-app-devel-list gnome org compiled
> it and got no segfault while running. So I rebuilt my system ??
>
> With
> pango 1.8.1 in /opt/gnome/share/pango-1.8.1/
> atk 1.9.0 in /opt/gnome/share/atk-1.9.0/
> gtk+ 2.6.7 in /opt/gnome/share/gtk+-2.6.7/
>
> in this order, all three via
>        make uninstall
>        ./configure -prefix=/usr
>        make
>        make install
> and made things tidy (I hope) by running
> ldconfig while in /usr/lib. But same result.
>
> Hope that will help you -- and not overcrowed your mbox :-).
> Best, and thanks for your work!
> Best,
> Amities,
>           Olivier
>
> (Copy to gtk-app-devel-list gnome org for archiving).
> -------------Complete and Minimal example------------
> #include <stdlib.h>
> #include <stdio.h>
> #include <string.h>
> #include <gtk/gtk.h>
> GtkWidget *window, *my_combo_box;
>
> void my_gtk_widget_destroy(GtkWidget *widget)
> {
>      gtk_widget_destroy(widget);
>      gtk_main_quit();
> }
>
> void selecter(GtkComboBox *combo)
> {
>      gchar *name;
>
>      if ((name = gtk_combo_box_get_active_text
>                   (GTK_COMBO_BOX(my_combo_box))) == NULL){
>          printf("What are we doing in here ???");
>      } else {
>         printf("Ok %s \n", name);};
> }

The point is here, that my_combo_box COULD not be initialized.
In my programs  I had several problems with that behavior and I solved
this by using the widget that is declared in the function call. In your
example it is combo. So the code looks like:

void selecter(GtkComboBox *combo)
{
     gchar *name;

     if ((name = gtk_combo_box_get_active_text
                  (combo)) == NULL){
         printf("What are we doing in here ???");
     } else {
        printf("Ok %s \n", name);};
}

Regards

JÃrgen