Enhance the microphone in XP

[Cpp]
Bool CMicrophoneEnhance: SetEnhance (bool enhance, DWORD type)
{
<Span style = "white-space: pre"> </span> MIXERLINE, sub_line;
<Span style = "white-space: pre"> </span> ZeroMemory (& line, sizeof (MIXERLINE ));
<Span style = "white-space: pre"> </span> ZeroMemory (& sub_line, sizeof (MIXERLINE ));
 
 
<Span style = "white-space: pre"> </span> HMIXER hMixer = NULL;
<Span style = "white-space: pre"> </span> bool result = false;
<Span style = "white-space: pre"> </span> int devs =: mixerGetNumDevs ();
<Span style = "white-space: pre"> </span> for (int I = 0; I <devs; ++ I)
<Span style = "white-space: pre"> </span> {<span style = "white-space: pre"> </span> //
<Span style = "white-space: pre"> </span> if (: mixerOpen (& hMixer, I, (DWORD) 0, 0, CALLBACK_WINDOW )! = MMSYSERR_NOERROR)
<Span style = "white-space: pre"> </span> {
<Span style = "white-space: pre"> </span> hMixer = NULL;
<Span style = "white-space: pre"> </span> continue;
<Span style = "white-space: pre"> </span>}
<Span style = "white-space: pre"> </span> line. cbStruct <span style = "white-space: pre"> </span> = sizeof (MIXERLINE );
<Span style = "white-space: pre"> </span> line. dwComponentType = type;
<Span style = "white-space: pre"> </span> if (: mixerGetLineInfo (HMIXEROBJ) hMixer, & line, MIXER_GETLINEINFOF_COMPONENTTYPE )! = MMSYSERR_NOERROR)
<Span style = "white-space: pre"> </span> {
<Span style = "white-space: pre"> </span>: mixerClose (hMixer );
<Span style = "white-space: pre"> </span> hMixer = NULL;
<Span style = "white-space: pre"> </span> continue;
<Span style = "white-space: pre"> </span>}
 
 
<Span style = "white-space: pre"> </span> if (line. cConnections = 0)
<Span style = "white-space: pre"> </span> {
<Span style = "white-space: pre"> </span>: mixerClose (hMixer );
<Span style = "white-space: pre"> </span> hMixer = NULL;
<Span style = "white-space: pre"> </span> continue;
<Span style = "white-space: pre"> </span>}
<Span style = "white-space: pre"> </span> int connections = line. cConnections;
<Span style = "white-space: pre"> </span> for (int j = 0; j <connections; ++ j)
<Span style = "white-space: pre"> </span> {
<Span style = "white-space: pre"> </span> sub_line <span style = "white-space: pre"> </span> = line;
<Span style = "white-space: pre"> </span> sub_line.dwSource <span style = "white-space: pre"> </span> = j;
<Span style = "white-space: pre"> </span> mixerGetLineInfo (HMIXEROBJ) hMixer, & sub_line, MIXER_GETLINEINFOF_SOURCE );
 
 
<Span style = "white-space: pre"> </span> MIXERCONTROL <span style = "white-space: pre"> </span> mxc;
<Span style = "white-space: pre"> </span> MIXERLINECONTROLS <span style = "white-space: pre"> </span> mxlc;
<Span style = "white-space: pre"> </span> mxlc. cbStruct = sizeof (mxlc );
<Span style = "white-space: pre"> </span> mxlc. dwLineID = sub_line.dwLineID;
<Span style = "white-space: pre"> </span> mxlc. dwControlType = MIXERCONTROL_CONTROLTYPE_ONOFF;
<Span style = "white-space: pre"> </span> mxlc. cControls = sub_line.cControls;
<Span style = "white-space: pre"> </span> mxlc. cbmxctrl = sizeof (MIXERCONTROL );
<Span style = "white-space: pre"> </span> mxlc. pamxctrl = & mxc;
<Span style = "white-space: pre"> </span> if (MMSYSERR_NOERROR! =: MixerGetLineControls (HMIXEROBJ) hMixer, & mxlc, MIXER_GETLINECONTROLSF_ONEBYTYPE ))
<Span style = "white-space: pre"> </span> {
<Span style = "white-space: pre"> </span> continue;
<Span style = "white-space: pre"> </span>}
<Span style = "white-space: pre"> </span>
<Span style = "white-space: pre"> </span> CString strName = mxc. szName;
<Span style = "white-space: pre"> </span> strName. MakeUpper ();
<Span style = "white-space: pre"> </span> if (-1! = StrName. Find (_ T ("BOOST") |
<Span style = "white-space: pre"> </span>-1! = StrName. Find (_ T ("microphone enhancement") |
<Span style = "white-space: pre"> </span>-1! = StrName. Find (_ T ("20DB ")))
<Span style = "white-space: pre"> </span> {
<Span style = "white-space: pre"> </span> MIXERCONTROLDETAILS_BOOLEAN enh [2];
<Span style = "white-space: pre"> </span> MIXERCONTROLDETAILS <span style = "white-space: pre"> </span> mxcd;
<Span style = "white-space: pre"> </span> mxcd. cMultipleItems = 0;
<Span style = "white-space: pre"> </span> mxcd. dwControlID <span style = "white-space: pre"> </span> = mxc. dwControlID;
<Span style = "white-space: pre"> </span> mxcd. cbStruct <span style = "white-space: pre"> </span> = sizeof (MIXERCONTROLDETAILS );
<Span style = "white-space: pre"> </span> mxcd. cbDetails <span style = "white-space: pre"> </span> = sizeof (MIXERCONTROLDETAILS_BOOLEAN );
<Span style = "white-space: pre"> </span> mxcd. paDetails <span style = "white-space: pre"> </span> = enh;
<Span style = "white-space: pre"> </span> mxcd. cChannels <span style = "white-space: pre"> </span> = sub_line.cChannels;
 
 
<Span style = "white-space: pre"> </span> if (MMSYSERR_NOERROR! = MixerGetControlDetails (HMIXEROBJ) hMixer, & mxcd, MIXER_OBJECTF_HMIXER | MIXER_GETCONTROLDETAILSF_VALUE ))
<Span style = "white-space: pre"> </span> {
<Span style = "white-space: pre"> </span> ASSERT (false );
<Span style = "white-space: pre"> </span> break;
<Span style = "white-space: pre"> </span>}
<Span style = "white-space: pre"> </span> enh [0]. fValue = enhance? 1:0;
<Span style = "white-space: pre"> </span> enh [1]. fValue = enhance? 1:0;
<Span style = "white-space: pre"> </span> if (MMSYSERR_NOERROR! = MixerSetControlDetails (HMIXEROBJ) hMixer, & mxcd, MIXER_OBJECTF_HMIXER | MIXER_SETCONTROLDETAILSF_VALUE ))
<Span style = "white-space: pre"> </span> {
<Span style = "white-space: pre"> </span> ASSERT (false );
<Span style = "white-space: pre"> </span> break;
<Span style = "white-space: pre"> </span>}
<Span style = "white-space: pre"> </span> result = true;
<Span style = "white-space: pre"> </span>}
<Span style = "white-space: pre"> </span>}
<Span style = "white-space: pre"> </span>: mixerClose (hMixer );
<Span style = "white-space: pre"> </span> hMixer = NULL;
<Span style = "white-space: pre"> </span>}
 
 
<Span style = "white-space: pre"> </span> return result;
}
[Cpp]
CMicrophoneEnhance microphoneEnhance;
[Cpp] view plaincopy
MicrophoneEnhance. SetEnhance (true, MIXERLINE_COMPONENTTYPE_DST_SPEAKERS );
[Cpp]
MicrophoneEnhance. SetEnhance (true, MIXERLINE_COMPONENTTYPE_DST_WAVEIN)
[Cpp]
 
Currently, you can only use the enumeration method to open all "microphone enhancement" mixlines. If you have a better method, please note!