static void
-psppire_dialog_action_barchart_activate (GtkAction *a)
+psppire_dialog_action_barchart_activate (PsppireDialogAction *a)
{
PsppireDialogActionBarchart *act = PSPPIRE_DIALOG_ACTION_BARCHART (a);
PsppireDialogAction *pda = PSPPIRE_DIALOG_ACTION (a);