public void lockUI(ProcessInfo pi){
  if (m_isLock)   return;
  m_isLock=true;
  Clients.showBusy(null,true);
}

public void lockUI ( ProcessInfo pi ) { if ( m_isLock ) return ; m_isLock = true ; Clients . showBusy ( null , true ) ; }
lock user interface called from the worker before processing
