public static void VolumeUp() { if (System.Environment.OSVersion.Version.Major >= 6) { // // Use new vista volume apis // EndpointVolume epVol = new EndpointVolume(); float vol = epVol.MasterVolume; epVol.MasterVolume = Math.Min(1, vol += 1.0f / VolumeSteps); epVol.Dispose(); } else { // // Use older volume apis on XP // WinMMVolume.MixerInfo mi = WinMMVolume.GetMixerControls(); WinMMVolume.AdjustVolume(mi, (mi.maxVolume - mi.minVolume) / VolumeSteps); } }
public static void VolumeDown() { if (System.Environment.OSVersion.Version.Major >= 6) { // // Use new vista volume apis // EndpointVolume epVol = new EndpointVolume(); float vol = epVol.MasterVolume; epVol.MasterVolume = Math.Max(0, vol -= 1.0f / VolumeSteps); epVol.Dispose(); } else { // // Use older volume apis on XP // WinMMVolume.MixerInfo mi = WinMMVolume.GetMixerControls(); WinMMVolume.AdjustVolume(mi, -(mi.maxVolume - mi.minVolume) / VolumeSteps); } }