Re: GtkCombo Win32

[TORRI Vincent <Vincent Torri math u-bordeaux fr>]

On Thu, 20 Feb 2003, it s big wrote:

> Woops I think that the last e-mail I sent went to the wrong place so here it is again just in case.
>
> I seem to be having a problem with GtkCombo under win32 heres the error msg I get, well all of the errors 
> seem to have todo with the entry part of the gtkcombo box.
>
> errors:
>
> GtkCombobox.exe (pid:1204): GLib-GObject-WARNING **: invalid cast from (NULL) pointer to `GtkEntry'
>
> GtkCombobox.exe (pid:1204): GLib-GObject-WARNING **: invalid cast from (NULL) pointer to `GObject'
>
> GtkCombobox.exe (pid:1204): GLib-GObject-WARNING **: invalid (NULL) pointer instance
>
> GtkCombobox.exe (pid:1204): GLib-GObject-CRITICAL **: file gsignal.c: line 1600(g_signal_connect_data): 
> assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
>
> the following code is what generated the errors this is the first time I've had a problem like this under 
> win32.
>
> #include <gtk/gtk.h>
>
> void select_print (GtkWidget *widget, GtkWidget *entry);
>
> main (gint argc, gchar *argv[])
> {
>     GtkWidget *window;
>     GtkWidget *combobox;
>     GList *glist = NULL;
>
>     gtk_init (&argc, &argv);
>
>     window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
>     gtk_window_set_title (GTK_WINDOW (window), "GtkCombobox");
>     g_signal_connect (G_OBJECT (window), "destroy",
>                       G_CALLBACK (gtk_main_quit),
>                       NULL);
>
>     combobox = gtk_combo_new ();
>     /*GTK_COMBO (combobox)->entry = gtk_entry_new ();*/
>     glist = g_list_append (glist, "AM");
>     glist = g_list_append (glist, "PM");
>     gtk_combo_set_popdown_strings (GTK_COMBO (combobox), glist);
>     /*gtk_entry_set_text (GTK_ENTRY (GTK_COMBO (combobox)->entry), "AM");*/
>
>     g_free (glist);

Hello,

  under linux, it seems that freeing this list is not appreciated (seg 
fault). gtk_combo_set_popdown_strings seems to use the list and not a copy 
it. Try without this line.

regards

Vincent TORRI


>     gtk_combo_set_use_arrows (GTK_COMBO (combobox), TRUE);
>     gtk_container_add (GTK_CONTAINER (window), combobox);
>     g_signal_connect (G_OBJECT (GTK_ENTRY (GTK_COMBO (combobox)->entry)), "activate",
>                       G_CALLBACK (select_print), combobox);
>
>     gtk_widget_show (combobox);
>     gtk_widget_show (window);
>
>     gtk_main ();
>      
>     return 0;
>
> }
>
>
> void select_print (GtkWidget *widget, GtkWidget *combo)
> {
>     g_print ("\n combobox set to: %s \n", gtk_entry_get_text (GTK_ENTRY (GTK_COMBO (combo)->entry)));
> }    
>
> is it just user error and I'm doing some thing wrong or does it have to do with the win32 port of Gtk? Any 
> help on this would be greatly aprechated.
>
> thx in advance.
>
>
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-- 
TORRI Vincent
Mathematiques Appliquees Bordeaux                                                
Institut de Mathematiques                                                       
Universite Bordeaux 1                                                           
351 cours de la liberation                                                      
33 405 Talence cedex - France                                                   
                                                                                
Tel : 33 (0)5 57 96 21 42                                                       
Fax : 33 (0)5 56 84 26 26                                                       
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