|
Hello In the application I'm writing, I have included several Combo Boxes. They are all written like this: main { GtkWidget *pComboRange, *pFrame; ... pFrame = gtk_frame_new("Zoom Range"); pComboRange = gtk_combo_box_new_text(); gtk_container_add(GTK_CONTAINER(pFrame), pComboRange); gtk_box_pack_start(GTK_BOX(pHBox[4]), pFrame, TRUE, TRUE, 0); gtk_combo_box_append_text(GTK_COMBO_BOX(pComboRange), "1000 Hz"); gtk_combo_box_append_text(GTK_COMBO_BOX(pComboRange), "2000 Hz"); gtk_combo_box_append_text(GTK_COMBO_BOX(pComboRange), "4000 Hz"); gtk_combo_box_set_active(GTK_COMBO_BOX(pComboRange), 2); g_signal_connect( G_OBJECT(pComboRange), "changed", G_CALLBACK( cb_range_changed ), NULL ); ... } Changing the value of the Combo Box call the function: void cb_range_changed(GtkWidget *combo, gpointer data) { gint index = gtk_combo_box_get_active(GTK_COMBO_BOX(combo)); if (index == 0) { zoomFactor = 1; } else if (index == 1) { zoomFactor = 2; } else if (index == 2) { zoomFactor = 4; } } The app compiles OK and works exactly as I want, but if I start the app in a terminal, I have these messages every time I use the Combo Boxes : GLib-GObject-WARNING **: invalid uninstantiatable type `(null)' in cast to `GObject' GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed This happens even if I compile it without the 'g_signal_connect' line, which shows, I guess, that the problem is in the 'main' file and not in the 'cb_range_changed' function. Please is this normal? Where does it come from? Should I fix something in my code? Thank you very much Victor |
_______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
