A general messagebox src code paragraph for debug in Gtk+ programming

#define debug_msg_box() \
{ \
 
   GtkWidget *msg_dlg = gtk_message_dialog_new(NULL, \
                GTK_DIALOG_DESTROY_WITH_PARENT, \
                GTK_MESSAGE_INFO, \
                GTK_BUTTONS_OK, \
                'FUNC: %s \nLINE: %d \nFILE: %s', \
                __FUNCTION__, __LINE__, __FILE__); \
    gtk_dialog_run(GTK_DIALOG( msg_dlg)); \
    gtk_widget_destroy(msg_dlg); \
}