147 lines
2.3 KiB
C++
147 lines
2.3 KiB
C++
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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EmulatePlaySound.cpp
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Abstract:
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If an app calls PlaySound with a SND_LOOP flag, the sould plays
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continuously until PlaySound is called with a NULL sound name. Win9x will
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automatically stop the sound if a different sound is played. This shim
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will catch all PlaySound calls, remember the current sound and
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automatically stop it if a different sound is to be played.
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History:
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04/05/1999 robkenny
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(EmulatePlaySound)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(PlaySoundA)
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APIHOOK_ENUM_ENTRY(PlaySoundW)
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APIHOOK_ENUM_ENTRY(sndPlaySoundA)
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APIHOOK_ENUM_ENTRY(sndPlaySoundW)
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APIHOOK_ENUM_END
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/*++
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Fix the flags
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--*/
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BOOL
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APIHOOK(PlaySoundA)(
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LPCSTR pszSound,
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HMODULE hmod,
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DWORD fdwSound
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)
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{
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//
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// Force the flags to 0 if they want to stop the current sound.
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//
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if (pszSound == NULL) {
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fdwSound = 0;
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}
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return ORIGINAL_API(PlaySoundA)(pszSound, hmod, fdwSound);
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}
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/*++
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Fix the flags
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--*/
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BOOL
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APIHOOK(PlaySoundW)(
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LPCWSTR pszSound,
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HMODULE hmod,
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DWORD fdwSound
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)
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{
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//
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// Force the flags to 0 if they want to stop the current sound.
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//
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if (pszSound == NULL) {
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fdwSound = 0;
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}
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return ORIGINAL_API(PlaySoundW)(pszSound, hmod, fdwSound);
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}
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/*++
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Fix the flags
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--*/
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BOOL
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APIHOOK(sndPlaySoundA)(
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LPCSTR pszSound,
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UINT fuSound
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)
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{
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//
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// Force the flags to 0 if they want to stop the current sound.
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//
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if (pszSound == NULL) {
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fuSound = 0;
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}
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return ORIGINAL_API(sndPlaySoundA)(pszSound, fuSound);
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}
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/*++
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Fix the flags.
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--*/
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BOOL
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APIHOOK(sndPlaySoundW)(
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LPCWSTR pszSound,
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UINT fuSound
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)
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{
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//
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// Force the flags to 0 if they want to stop the current sound.
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//
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if (pszSound == NULL) {
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fuSound = 0;
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}
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return ORIGINAL_API(sndPlaySoundW)(pszSound, fuSound);
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}
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/*++
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Register hooked functions
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--*/
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HOOK_BEGIN
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APIHOOK_ENTRY(WINMM.DLL, PlaySoundA)
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APIHOOK_ENTRY(WINMM.DLL, PlaySoundW)
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APIHOOK_ENTRY(WINMM.DLL, sndPlaySoundA)
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APIHOOK_ENTRY(WINMM.DLL, sndPlaySoundW)
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HOOK_END
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IMPLEMENT_SHIM_END
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