Re: gtk_tree_model_filter_set_modify_func()

[Russell Shaw <rjshaw netspace net au>]

Tim Müller wrote:
> On Tuesday 29 June 2004 18:25, Russell Shaw wrote:
>
> > In the following code, i can only get printed on the terminal window:
> >   n:0 val:(null)
> > I should get:
> >   n:0 val:abc
> >
> > If i comment out the gtk_tree_model_filter_set_modify_func() line
> > then it works. What am i doing wrong? Gtk 2.4.3
>
>
> > ... snip ...
> >
> > void filtermodifyfunc(
> >                       GtkTreeModel *model,
> >                       GtkTreeIter *iter,
> >                       GValue *value,
> >                       gint column,
> >                       gpointer data)
> > {
> >     return;
> > }
>
>
> you're supposed to set the value to something in that function, otherwise it 
> will just stay initialised to 0/NULL ....

When i get the value to modify with gtk_tree_model_get() in the code below, it
seems to recursively call filtermodifyfunc() and the process repeats until a
segfault:

void filtermodifyfunc(
                      GtkTreeModel *model,
                      GtkTreeIter *iter,
                      GValue *value,
                      gint column,
                      gpointer data)
{
    g_printf("passed\n");
    if(G_VALUE_HOLDS_STRING(value)){
        gchar *str;
        gtk_tree_model_get(model,iter,column,&str,-1);
        g_value_set_string(value,str);
        g_printf(col:%d val:%s\n",column,str);
    }
    else if(G_VALUE_HOLDS_UINT(value)){
        guint n;
        gtk_tree_model_get(model,iter,column,&n,-1);
        g_value_set_uint(value,n);
        g_printf(col:%d n:%u\n",column,n);
    }
}