小编Dil*_*laz的帖子

我制作了一个使用WinAPI来静音麦克风的程序,它似乎在Windows XP中完美运行但在Windows 7中没有做任何事情.是否可以在Windows 7中使用WinAPI控制麦克风音量或静音？

void setVolume(DWORD volume) {
HMIXER mixer;

if (mixerOpen(&mixer, 0, 0, 0, 0) != MMSYSERR_NOERROR) {
    MessageBoxW(NULL, L"Error: mixerOpen()", NULL, MB_ICONHAND);
    return;
}

// Get the line info
MIXERCAPS mixcaps;
MIXERLINE mixerLine;
mixerGetDevCaps(0, &mixcaps, sizeof(MIXERCAPS));
mixerLine.cbStruct = sizeof(MIXERLINE);
mixerLine.dwComponentType = MIXERLINE_COMPONENTTYPE_DST_WAVEIN;
mixerLine.dwSource = 0;
mixerLine.dwDestination = 0;

if (mixerGetLineInfo(reinterpret_cast<HMIXEROBJ>(mixer), &mixerLine, MIXER_GETLINEINFOF_SOURCE)
    != MMSYSERR_NOERROR) {
        MessageBoxW(NULL, L"Error: mixerGetLineInfo()", NULL, MB_ICONHAND);
        return;
}

// Get control for mixerline
MIXERCONTROL mixerCtrl;
MIXERLINECONTROLS mixerLineCtrl;

mixerLineCtrl.cbStruct = sizeof(MIXERLINECONTROLS);
mixerLineCtrl.dwLineID = mixerLine.dwLineID;
mixerLineCtrl.dwControlType …