public static void Mute(bool mute)
{
// Check if this is vista or XP
if (System.Environment.OSVersion.Version.Major >= 6)
{
EndpointVolume epVol = new EndpointVolume();
epVol.Mute = mute;
epVol.Dispose();
}
else
{
int mixerID = 0;
if (mixerOpen(out mixerID, 0, 0, 0, 0) == MMSYSERR_NOERROR)
{
MIXERLINE line = new MIXERLINE();
line.cbStruct = Marshal.SizeOf(line);
line.dwComponentType = MIXERLINE_COMPONENTTYPE_DST_SPEAKERS;
if (mixerGetLineInfoA(mixerID, ref line, MIXER_GETLINEINFOF_COMPONENTTYPE) == MMSYSERR_NOERROR)
{
int sizeofMIXERCONTROL = 152;
MIXERCONTROL mixerControl = new MIXERCONTROL();
MIXERLINECONTROLS lineControl = new MIXERLINECONTROLS();
lineControl.pamxctrl = Marshal.AllocCoTaskMem(sizeofMIXERCONTROL);
lineControl.cbStruct = Marshal.SizeOf(lineControl);
lineControl.dwLineID = line.dwLineID;
lineControl.dwControl = MIXERCONTROL_CONTROLTYPE_MUTE;
lineControl.cControls = 1;
lineControl.cbmxctrl = sizeofMIXERCONTROL;
mixerControl.cbStruct = sizeofMIXERCONTROL;
if (mixerGetLineControlsA(mixerID, ref lineControl, MIXER_GETLINECONTROLSF_ONEBYTYPE) == MMSYSERR_NOERROR)
{
mixerControl = (MIXERCONTROL)Marshal.PtrToStructure(lineControl.pamxctrl, typeof(MIXERCONTROL));
MIXERCONTROLDETAILS controlDetails = new MIXERCONTROLDETAILS();
MIXERCONTROLDETAILS_BOOLEAN muteValue = new MIXERCONTROLDETAILS_BOOLEAN();
controlDetails.item = 0;
controlDetails.dwControlID = mixerControl.dwControlID;
controlDetails.cbStruct = Marshal.SizeOf(controlDetails);
controlDetails.cbDetails = Marshal.SizeOf(muteValue);
controlDetails.cChannels = 1;
muteValue.dwValue = Convert.ToInt32(mute);
controlDetails.paDetails = Marshal.AllocCoTaskMem(Marshal.SizeOf(muteValue));
Marshal.StructureToPtr(muteValue, controlDetails.paDetails, false);
int rc = mixerSetControlDetails(mixerID, ref controlDetails, MIXER_SETCONTROLDETAILSF_VALUE);
Marshal.FreeCoTaskMem(controlDetails.paDetails);
Marshal.FreeCoTaskMem(lineControl.pamxctrl);
}
}
}
}
}
public static void Mute(bool mute)
{
// Check if this is vista or XP
if (System.Environment.OSVersion.Version.Major >= 6)
{
EndpointVolume epVol = new EndpointVolume();
epVol.Mute = mute;
epVol.Dispose();
}
else
{
int mixerID = 0;
if (mixerOpen(out mixerID, 0, 0, 0, 0) == MMSYSERR_NOERROR)
{
MIXERLINE line = new MIXERLINE();
line.cbStruct = Marshal.SizeOf(line);
line.dwComponentType = MIXERLINE_COMPONENTTYPE_DST_SPEAKERS;
if (mixerGetLineInfoA(mixerID, ref line, MIXER_GETLINEINFOF_COMPONENTTYPE) == MMSYSERR_NOERROR)
{
int sizeofMIXERCONTROL = 152;
MIXERCONTROL mixerControl = new MIXERCONTROL();
MIXERLINECONTROLS lineControl = new MIXERLINECONTROLS();
lineControl.pamxctrl = Marshal.AllocCoTaskMem(sizeofMIXERCONTROL);
lineControl.cbStruct = Marshal.SizeOf(lineControl);
lineControl.dwLineID = line.dwLineID;
lineControl.dwControl = MIXERCONTROL_CONTROLTYPE_MUTE;
lineControl.cControls = 1;
lineControl.cbmxctrl = sizeofMIXERCONTROL;
mixerControl.cbStruct = sizeofMIXERCONTROL;
if (mixerGetLineControlsA(mixerID, ref lineControl, MIXER_GETLINECONTROLSF_ONEBYTYPE) == MMSYSERR_NOERROR)
{
mixerControl = (MIXERCONTROL)Marshal.PtrToStructure(lineControl.pamxctrl, typeof(MIXERCONTROL));
MIXERCONTROLDETAILS controlDetails = new MIXERCONTROLDETAILS();
MIXERCONTROLDETAILS_BOOLEAN muteValue = new MIXERCONTROLDETAILS_BOOLEAN();
controlDetails.item = 0;
controlDetails.dwControlID = mixerControl.dwControlID;
controlDetails.cbStruct = Marshal.SizeOf(controlDetails);
controlDetails.cbDetails = Marshal.SizeOf(muteValue);
controlDetails.cChannels = 1;
muteValue.dwValue = Convert.ToInt32(mute);
controlDetails.paDetails = Marshal.AllocCoTaskMem(Marshal.SizeOf(muteValue));
Marshal.StructureToPtr(muteValue, controlDetails.paDetails, false);
int rc = mixerSetControlDetails(mixerID, ref controlDetails, MIXER_SETCONTROLDETAILSF_VALUE);
Marshal.FreeCoTaskMem(controlDetails.paDetails);
Marshal.FreeCoTaskMem(lineControl.pamxctrl);
}
}
}
}
}