Delphi 延迟函数 比sleep 要好的多

//延迟函数：方法一
procedure delay(msecs:integer);
var 
  Tick: DWord; 
  Event: THandle; 
begin 
  Event := CreateEvent(nil, False, False, nil); 
  try 
    Tick := GetTickCount + DWord(msecs); 
    while (msecs > 0) and (MsgWaitForMultipleObjects(1, Event, False, msecs, QS_ALLINPUT) <> WAIT_TIMEOUT) do 
    begin 
      Application.ProcessMessages; 
      msecs := Tick - GetTickcount; 
    end; 
  finally 
    CloseHandle(Event); 
end; 

//延迟函数：方法二
procedure Delay(dwMilliseconds:DWORD);//Longint
var
iStart,iStop:DWORD;
begin
    iStart :=   GetTickCount;
    repeat
    iStop  :=   GetTickCount;
    Application.ProcessMessages;
    until (iStop  -  iStart) >= dwMilliseconds;
end;