Le dimanche 01 février 2009 à 10:22 -0800, frantishek a écrit :> My code does it just by the book:> > void setPermission(GtkWidget *window, gpointer p)> {> g_print("%s\n", (gchar*) p);> }> > radio1 = gtk_radio_button_new_with_label (NULL, "First");> radio2 = gtk_radio_button_new_with_label_from_widget (GTK_RADIO_BUTTON> (radio1), "Second");> radio3 = gtk_radio_button_new_with_label_from_widget (GTK_RADIO_BUTTON> (radio1), "Third");> g_signal_connect_swapped (G_OBJECT (radio1), "clicked", G_CALLBACK> (setPermission), (gpointer) "Clicked 0"); > g_signal_connect_swapped (G_OBJECT (radio2), "clicked", G_CALLBACK> (setPermission), (gpointer) "Clicked 1"); > g_signal_connect_swapped (G_OBJECT (radio3), "clicked", G_CALLBACK> (setPermission), (gpointer) "Clicked 2"); > > Yet, when I select any of these radio buttons, it prints out some garbage> (the same for each button).> > Any idea why?
You are using g_singal_connect_swapped, so your gpointer becomes thefirst argument of the callback which should be
void setPermission(gpointer p){ g_print("%s\n", (gchar*) p);}
> learning_gtk wrote:> > > > I hope to use g_signal_connect() to pass a gchar* parameter like this:> > > > gchar* radio1= "Radio1"; //it is global variable> > gchar* radio2= "Radio2";> > gchar* radio3= "Radio3";> > > > void item_radio_print1(gpointer* data)> > {> > g_print("This is the radio %s\n", (gchar *)data);> > }> > > > g_signal_connect(G_OBJECT(item_radio1), "activate",> > GTK_SIGNAL_FUNC(item_radio_print1),> > (gpointer*)radio1);> > g_signal_connect(G_OBJECT(item_radio2), "activate",> > GTK_SIGNAL_FUNC(item_radio_print1),> > (gpointer*)radio2);> > g_signal_connect(G_OBJECT(item_radio3), "activate",> > GTK_SIGNAL_FUNC(item_radio_print1),> > (gpointer*)radio3);> > > > But, those strings can not be printed.> > > > Please help me. Thanks!> > >
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