/// <summary>
/// Decrease the master volume
/// </summary>
public void VolumeDown()
{
Guid nullGuid;
nullGuid = Guid.Empty;
int retVal = iAudioEndpoint.VolumeStepDown(nullGuid);
}
public void LowerSystemVolume()
{
_aepv.SetMute(false, new System.Guid());
for (var i = 0; i < 4; i++)
{
_aepv.VolumeStepDown(new System.Guid());
}
}
/// <summary>
/// Decrease the master volume
/// </summary>
public void VolumeDown()
{
Guid nullGuid;
//nullGuid = new Guid("{00000000-0000-0000-0000-000000000000}"); // null
// {dddddddd-dddd-dddd-dddd-dddddddddddd}
nullGuid = Guid.Empty;
int retVal = iAudioEndpoint.VolumeStepDown(nullGuid);
}
public void VolumeStepDown()
{
Marshal.ThrowExceptionForHR(_AudioEndPointVolume.VolumeStepDown(Guid.Empty));
}
public void VolumeDown()
{
int retVal = iAudioEndpoint.VolumeStepDown(GuidEventContext);
Marshal.ThrowExceptionForHR(retVal);
}
/// <summary>
/// VolumeChanged Step Down
/// </summary>
public void VolumeStepDown()
{
ComThread.Invoke(() => Marshal.ThrowExceptionForHR(_audioEndPointVolume.VolumeStepDown(Guid.Empty)));
}
/// <summary>
/// Volume Step Down
/// </summary>
public void VolumeStepDown()
{
Marshal.ThrowExceptionForHR(audioEndPointVolume.VolumeStepDown(ref notificationGuid));
}
public override void VolumeDown()
{
endPointVol.VolumeStepDown(ref guidDummy);
}