VC 让进程/网页静音的方法_对某个进程静音vc-优快云博客

本文提供了一段用于实现浏览器静音功能的示例代码，该代码通过修改特定DLL文件中的指令来达到静音效果，并指出这种方法仅在Windows XP系统中有效且存在限制。

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类似一些浏览器的静音功能，代码如下：

// 这种方式静音后, 只能通过刷新网页才能恢复声音，而且只在XP下有效。Vista以上版本可用mixerSetControlDetails实现

BOOL SetMute(BOOL bMute){
HMODULE hDSound;
HMODULE hWinmm;
void* pDirectSoundCreate = NULL;
void* pmidiStreamOpen  = NULL;
void* pmidiStreamOut  = NULL;
void* pwaveOutWrite  = NULL;
BYTE byMute[]   = {0xC2, 0x0C, 0x00}; //ASM RET 0
BYTE byRestore[]   = {0x8B, 0xFF, 0x55};
DWORD OldProtect;

hDSound = LoadLibrary(_T("DSound.dll"));
if (NULL != hDSound)
{
pDirectSoundCreate = GetProcAddress(hDSound, "DirectSoundCreate");
if (pDirectSoundCreate != NULL)
{
VirtualProtect(pDirectSoundCreate, 3, PAGE_EXECUTE_READWRITE, &OldProtect);

if (!bMute)
CopyMemory(pDirectSoundCreate, byRestore, 3);
else
CopyMemory(pDirectSoundCreate, byMute, 3);

VirtualProtect(pDirectSoundCreate, 3, PAGE_EXECUTE_READ, &OldProtect);
}

FreeLibrary(hDSound);
}
else
{
return FALSE;
}

hWinmm = LoadLibrary(_T("Winmm.dll"));
if (NULL != hWinmm)
{
pmidiStreamOpen = GetProcAddress(hWinmm, "midiStreamOpen");
pmidiStreamOut = GetProcAddress(hWinmm, "midiStreamOut");
pwaveOutWrite = GetProcAddress(hWinmm, "waveOutWrite");

if (pmidiStreamOpen != NULL)
{
VirtualProtect(pmidiStreamOpen, 3, PAGE_EXECUTE_READWRITE, &OldProtect);

if (!bMute)
CopyMemory(pmidiStreamOpen, byRestore, 3);
else
CopyMemory(pmidiStreamOpen, byMute, 3);

VirtualProtect(pmidiStreamOpen, 3, PAGE_EXECUTE_READ, &OldProtect);
}
if (pmidiStreamOut != NULL)
{
VirtualProtect(pmidiStreamOut, 3, PAGE_EXECUTE_READWRITE, &OldProtect);

if (!bMute)
CopyMemory(pmidiStreamOut, byRestore, 3);
else
CopyMemory(pmidiStreamOut, byMute, 3);

VirtualProtect(pmidiStreamOut, 3, PAGE_EXECUTE_READ, &OldProtect);
}
if (pwaveOutWrite != NULL)
{
VirtualProtect(pwaveOutWrite, 3, PAGE_EXECUTE_READWRITE, &OldProtect);

if (!bMute)
CopyMemory(pwaveOutWrite, byRestore, 3);
else
CopyMemory(pwaveOutWrite, byMute, 3);

VirtualProtect(pwaveOutWrite, 3, PAGE_EXECUTE_READ, &OldProtect);
}

FreeLibrary(hWinmm);
}
else
{
return FALSE;
}

return TRUE;

}

上面代码有弊端，不过可以作为参考学习。

要实现程序的静音，可以使用detours.lib中的方法来实现（适用于XP），例子如链接：http://www.pudn.com/downloads493/sourcecode/internet/browser/49636978browser_mute.rar