
                     ǳ̸ʱTTimer͸߾ȶʱ
                     ================================
                          CnPack ܾ
                   (http://www.cnpack.org  zjy@cnpack.org)
                               2002.04.29

    DelphiдѶTTimerӦǱȽϤˣҲѶй˽⣬ĵ򵥵ؽһWindows¶ʱһЩȤĶͬʱҲΪCnPackTCnTimer߾ȶʱĽܡ

    TTimerʵִVCLԴExtCtrlsԪСԴУ֪ڲʹSetTimerAPIòϵͳṩĶʱܡ
    SetTimerҪṩĸھʱIDʱͻصڡϵͳʱôϢзWM_TIMERϢʱIDͻصΪϢݡ
    TTimerڹʹFormsԪṩAllocateHWnd̴һصĴڲDeallocateHWndͷšʱṩһָWndProcڴϢ÷ֻǼ򵥵ӦWM_TIMERϢOnTimer¼ʱ0EnabledΪ桢OnTimer¼ʱTTimerSetTimerжʱ

    ˽TTimerĹƺһЩ㣺
    1ȣÿһTTimerʵᴴһڣ֪ǻϵͳԴģرWin9X£ûԴGDIԴʱǲɱˡʵֻҪһڣݲͬĶʱIDͿˡRxlibһRxTimerListֻʹһھһʱIDͨر㷨ʵֶʱĹܣĶʱȽϵ͡
    2ӱϿTTimerĶʱֱ1msWin32 SDKҲûἰڲʱ⡣ʵϣܶѶ֪Win9Xʵʷֱ55msNT/200010msҡTTimer˵IntervalΪ155Чһģдһܼ򵥵ĳͿ֤Win9X£

    ܶᵽWin9X¶ʱʵʾ55msʵľ
    ʵзһЩȤWin98SE£
    1ʱΪ1msһδڴʾʵʵĶʱ
    2гҷֶʱ55msңÿԼ18Ρ
    3ҿƶסĳʱʵʼ̱仯20msңÿɴʮΡ
    4ڳмһδͨѶ룬ͨⲿӲ򴮿ʱʱٶȾȻﵽٴΡ

    55msĶʱҺ׵뵽DosµⲿʱжINT08ٿжINT09жINT0CȻصóĽۣ
    Win9XӦⲿжʱʱģINT08ʱжϵĲƵߣԱֳʵʶʱΪ55ms
    Ϊ֤һ뷨дһ򵥵ĳ
    * ڴϷTTimerʱΪ55msEnabledΪ٣ٷһťĸǩ
    * ڶʱ¼нGetTickCountӿǰĺֵʾٽʱص
    * ڰť¼Ƚһʱ򿪣ʾǰʱ䣬Sleepʱ25msٽڶʱ򿪣ʾǰʱ䡣
    ִнɿȻʱʱ27msʱ¼ͬһʱڣʾֵȫͬ

    : ʱޣд⣬°벿ֽ
    * Win32ռʽϵͳ˶ʱվȡ
    * ̷߳ʽʱʵֺӡ
    * MIDIжʱĽܡ
    * Ķʱʽ
    * CnPackTCnTimerʱĽܡ