mmtse.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 61 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
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* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
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****************************************************************************/


#define INCLUDE_MMSYSTEM_H
#include "cover.h"

#define GetTimerCallBack        WINFUNCTION253ADDR
#pragma aux     WINFUNCTION253ADDR      "*"

extern LPTIMECALLBACK (__far *GetTimerCallBack)();
static LPTIMECALLBACK   CallBackFunc;

extern  void __InvokeCallBack();
#pragma aux  __InvokeCallBack = \
        "and    esp,0000FFFFh"  \
        "jmp    eax"            \
        parm [eax];

void __TimerCallBack()
{
    __InvokeCallBack( CallBackFunc );
}

UINT PASCAL _Cover_timeSetEvent(UINT uDelay, UINT uResolution,
    LPTIMECALLBACK lpFunction, DWORD dwUser, UINT uFlags)
{
    CallBackFunc = lpFunction;
    return( timeSetEvent( uDelay, uResolution,
        GetTimerCallBack( __TimerCallBack ),
        dwUser, uFlags ) );
}