GtkEntry *entry = GTK_ENTRY(gtk_bin_get_child(GTK_BIN(combo_box)));
gtk_combo_box_set_active(GTK_COMBO_BOX(combo_box), -1);
if (!*text)
GtkEntry *entry = GTK_ENTRY(gtk_bin_get_child(GTK_BIN(combo_box)));
gtk_combo_box_set_active(GTK_COMBO_BOX(combo_box), -1);
if (!*text)