回复 3楼 debroa723
mmsystem.h的内容如下，红色的是指向的错误行。
====================================================================
/*==========================================================================
*
*
mmsystem.h -- Include file for Multimedia API's
*
*
Version 4.00
*
*
Copyright 1992 - 1998 Microsoft Corporation.
All Rights Reserved.
*
*--------------------------------------------------------------------------
*
*
Define:
Prevent inclusion of:
*
--------------
--------------------------------------------------------
*
MMNODRV
Installable driver support
*
MMNOSOUND
Sound support
*
MMNOWAVE
Waveform support
*
MMNOMIDI
MIDI support
*
MMNOAUX
Auxiliary audio support
*
MMNOMIXER
Mixer support
*
MMNOTIMER
Timer support
*
MMNOJOY
Joystick support
*
MMNOMCI
MCI support
*
MMNOMMIO
Multimedia file I/O support
*
MMNOMMSYSTEM
General MMSYSTEM functions
*
*==========================================================================
*/
#ifndef _INC_MMSYSTEM
#define _INC_MMSYSTEM
/* #defined if mmsystem.h has been included */
#ifdef _WIN32
#include <pshpack1.h>
#else
#ifndef RC_INVOKED
#pragma pack(1)
#endif
#endif
#ifdef __cplusplus
extern "C" {
/* Assume C declarations for C++ */
#endif
/* __cplusplus */
#ifdef _WIN32
#ifndef _WINMM_
#define
WINMMAPI
DECLSPEC_IMPORT
#else
#define
WINMMAPI
#endif
#define _loadds
#define _huge
#else
#define
WINMMAPI
#endif
#ifdef _WIN32_VXD
#define NEAR
#define FAR
#define DECLARE_HANDLE(x) typedef WORD x
#define WINAPI
typedef DWORD LPSTR;
typedef DWORD LPVOID;
typedef DWORD LPCSTR;
typedef DWORD LPCWSTR;
typedef DWORD LRESULT;
typedef DWORD LPARAM;
typedef DWORD WPARAM;
typedef short WCHAR;
#endif
/****************************************************************************
General constants and data types
****************************************************************************/
/* general constants */
#define MAXPNAMELEN
32
/* max product name length (including NULL) */
#define MAXERRORLENGTH
256
/* max error text length (including NULL) */
#define MAX_JOYSTICKOEMVXDNAME 260 /* max oem vxd name length (including NULL) */
/*
*
Microsoft Manufacturer and Product ID's (these have been moved to
*
MMREG.H for Windows 4.00 and above).
*/
#if (WINVER <= 0x030A)
#ifndef MM_MICROSOFT
#define MM_MICROSOFT
1
/* Microsoft Corporation */
#endif
#ifndef MM_MIDI_MAPPER
#define MM_MIDI_MAPPER
1
/* MIDI Mapper */
#define MM_WAVE_MAPPER
2
/* Wave Mapper */
#define MM_SNDBLST_MIDIOUT
3
/* Sound Blaster MIDI output port */
#define MM_SNDBLST_MIDIIN
4
/* Sound Blaster MIDI input port */
#define MM_SNDBLST_SYNTH
5
/* Sound Blaster internal synthesizer */
#define MM_SNDBLST_WAVEOUT
6
/* Sound Blaster waveform output */
#define MM_SNDBLST_WAVEIN
7
/* Sound Blaster waveform input */
#define MM_ADLIB
9
/* Ad Lib-compatible synthesizer */
#define MM_MPU401_MIDIOUT
10
/* MPU401-compatible MIDI output port */
#define MM_MPU401_MIDIIN
11
/* MPU401-compatible MIDI input port */
#define MM_PC_JOYSTICK
12
/* Joystick adapter */
#endif
#endif
/* general data types */
#ifdef _WIN32
typedef UINT MMVERSION; /* major (high byte), minor (low byte) */
#else
typedef UINT
VERSION;
/* major (high byte), minor (low byte) */
#endif
typedef UINT
MMRESULT;
/* error return code, 0 means no error */
/* call as if(err=xxxx(...)) Error(err); else */
#define _MMRESULT_
typedef UINT FAR
*LPUINT;
/* MMTIME data structure */
typedef struct mmtime_tag
{
UINT
wType;
/* indicates the contents of the union */
union
{
DWORD
ms;
/* milliseconds */
DWORD
sample;
/* samples */
DWORD
cb;
/* byte count */
DWORD
ticks;
/* ticks in MIDI stream */
/* SMPTE */
struct
{
BYTE
hour;
/* hours */
BYTE
min;
/* minutes */
BYTE
sec;
/* seconds */
BYTE
frame;
/* frames
*/
BYTE
fps;
/* frames per second */
BYTE
dummy;
/* pad */
#ifdef _WIN32
BYTE
pad[2];
#endif
} smpte;
/* MIDI */
struct
{
DWORD songptrpos;
/* song pointer position */
} midi;
} u;
} MMTIME, *PMMTIME, NEAR *NPMMTIME, FAR *LPMMTIME;
/* types for wType field in MMTIME struct */
#define TIME_MS
0x0001
/* time in milliseconds */
#define TIME_SAMPLES
0x0002
/* number of wave samples */
#define TIME_BYTES
0x0004
/* current byte offset */
#define TIME_SMPTE
0x0008
/* SMPTE time */
#define TIME_MIDI
0x0010
/* MIDI time */
#define TIME_TICKS
0x0020
/* Ticks within MIDI stream */
/*
*
*
*/
#define MAKEFOURCC(ch0, ch1, ch2, ch3)
\
((DWORD)(BYTE)(ch0) | ((DWORD)(BYTE)(ch1) << 8) |
\
((DWORD)(BYTE)(ch2) << 16) | ((DWORD)(BYTE)(ch3) << 24 ))
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