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sleep(1000);        //ÑÓ³Ù1000ºÁÃë
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procedure Delay(MSecs: Longint);
//ÑÓʱº¯Êý£¬MSecsµ¥Î»ÎªºÁÃë(ǧ·ÖÖ®1Ãë)
var
FirstTickCount, Now: Longint;
begin
FirstTickCount := GetTickCount();
repeat
    Application.ProcessMessages;
    Now := GetTickCount();
until (Now - FirstTickCount >= MSecs) or (Now < FirstTickCount);
end;
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http://msdn.microsoft.com/msdnmag/issues/04/03/HighResolutionTimer/default.aspx £¬»òÕß
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{
A high-precision counter/timer. Retrieves time differences
                               downto microsec.
Quick Reference:
           


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