g_object_set_data(G_OBJECT(window), "theme_button", theme_button);
g_signal_connect (G_OBJECT (theme_button), "value-changed", G_CALLBACK (changed_value_theme_cb), priv);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(window)->vbox),
theme_button, TRUE, TRUE, 5);
g_object_set_data(G_OBJECT(window), "theme_button", theme_button);
g_signal_connect (G_OBJECT (theme_button), "value-changed", G_CALLBACK (changed_value_theme_cb), priv);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(window)->vbox),
theme_button, TRUE, TRUE, 5);