VOID CALLBACK playproc(
 HWND hwnd,   // handle of window for timer messages
 UINT uMsg,   // WM_TIMER message
 UINT idEvent, // timer identifier
 DWORD dwTime  // current system time</span>
)
 const ID=111;
 void XXXXX() 
{
   
  UpdateData(true);
if (m_?)
  {
  SetTimer(ID,1500,&playproc);
  } 
    else KillTimer(ID);
}