Re: GSList Keeps losing its contents

["Ian Frawley" <ifrawley opaltelecom co uk>]

Thanks Soeren.

Is what you saying that I should take a copy of my group GSList? If that's
the case will that not still be a pointer to my actual group list (pointer
to pointer) therefore having the same effect as my current code? I am sorry
if it is a silly question but I am not totally clued up on GSLists & GLists.

Ian

----- Original Message -----
From: "Soeren Sandmann" <sandmann daimi au dk>
To: "Ian Frawley" <ifrawley opaltelecom co uk>
Cc: <gtk-app-devel-list gnome org>
Sent: Thursday, October 18, 2001 7:28 PM
Subject: Re: GSList Keeps losing its contents


"Ian Frawley" <ifrawley opaltelecom co uk> writes:

> void SendMessage(GtkWidget * button, screen_controls * sc)
>
> {
> int i = 0;
>
> sc->group = g_slist_nth( sc->group, i );
>
> while ( sc->group != NULL && i < 3)
>
> {
> if (GTK_TOGGLE_BUTTON (sc->group->data)->active == TRUE)
>
> {
> cout << i << endl;
> }
>
> sc->group = g_slist_next ( sc->group );
>
> i++;
> }
> }

Your problem is that you keep updating the master copy of your list in
the screen controls until it is NULL - at which point the list is
empty and the contents leaked.

Instead, try something like this (I didn't test it):

void SendMessage(GtkWidget * button, screen_controls * sc)

{
int i = 0;
    GList *list;

list = g_slist_nth ( sc->group, i );

while ( list != NULL && i < 3)

{
if (GTK_TOGGLE_BUTTON (list->data)->active == TRUE)

{
cout << i << endl;
}

list = g_slist_next ( list );

i++;
}
}