private static unsafe bool getMuteStatus(IntPtr mHMixer, uint controlId)
{
MMErrors errorCode = 0;
IntPtr pUnsigned = IntPtr.Zero;
bool status = false;
try
{
// find the microphone source line connected to this wave in destination
IntPtr pmxcdSelectValue = Marshal.AllocHGlobal((int)(1 * sizeof(MIXERCONTROLDETAILS_BOOLEAN)));
MIXERCONTROLDETAILS mxcd = new MIXERCONTROLDETAILS();
mxcd.cbStruct = (uint)sizeof(MIXERCONTROLDETAILS);
mxcd.dwControlID = controlId;
mxcd.cChannels = 1;
mxcd.hwndOwner = IntPtr.Zero;
mxcd.cbDetails = (uint)sizeof(MIXERCONTROLDETAILS_BOOLEAN);
mxcd.paDetails = pmxcdSelectValue;
unchecked
{
errorCode = (MMErrors)MixerNative.mixerGetControlDetails(mHMixer, ref mxcd, (MIXER_GETCONTROLDETAILSFLAG)(int)((uint)MIXER_OBJECTFLAG.HMIXER | (int)MIXER_GETCONTROLDETAILSFLAG.VALUE));
}
if (errorCode != MMErrors.MMSYSERR_NOERROR)
{
throw new MixerException(errorCode, MicInterface.GetErrorDescription(FuncName.fnMixerGetControlDetails, errorCode));
}
status = *((uint *)pmxcdSelectValue) != 0U;
errorCode = (MMErrors)MixerNative.mixerSetControlDetails(mHMixer, ref mxcd, MIXER_SETCONTROLDETAILSFLAG.VALUE);
if (errorCode != MMErrors.MMSYSERR_NOERROR)
{
throw new MixerException(errorCode, MicInterface.GetErrorDescription(FuncName.fnMixerSetControlDetails, errorCode));
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
finally
{
if (pUnsigned != IntPtr.Zero)
{
Marshal.FreeHGlobal(pUnsigned);
}
}
return(status);
}
public static extern int mixerSetControlDetails(IntPtr hmxobj, ref MIXERCONTROLDETAILS pmxcd, MIXER_SETCONTROLDETAILSFLAG fdwDetails);
public static extern int mixerGetControlDetails(IntPtr hmxobj, ref MIXERCONTROLDETAILS pmxcd, uint fdwDetailsmixer);