public int OnNotify(IntPtr NotifyData)
        {
            //Since AUDIO_VOLUME_NOTIFICATION_DATA is dynamic in length based on the
            //number of audio channels available we cannot just call PtrToStructure 
            //to get all data, thats why it is split up into two steps, first the static
            //data is marshalled into the data structure, then with some IntPtr math the
            //remaining floats are read from memory.
            //
            var data = (AUDIO_VOLUME_NOTIFICATION_DATA) Marshal.PtrToStructure(NotifyData, typeof(AUDIO_VOLUME_NOTIFICATION_DATA));
            
            //Determine offset in structure of the first float
            var Offset = Marshal.OffsetOf(typeof (AUDIO_VOLUME_NOTIFICATION_DATA), "ChannelVolume");
            //Determine offset in memory of the first float
            var FirstFloatPtr = (IntPtr) ((long) NotifyData + (long) Offset);

            var voldata = new float[data.nChannels];
            
            //Read all floats from memory.
            for (var i = 0; i < data.nChannels; i++)
                voldata[i] = (float) Marshal.PtrToStructure(FirstFloatPtr, typeof (float));

            //Create combined structure and Fire Event in parent class.
            var NotificationData = new AudioVolumeNotificationData(data.bMuted, data.fMasterVolume);
            _Parent.FireNotification(NotificationData);
            return 0; //S_OK
        }
        public int OnNotify(IntPtr NotifyData)
        {
            //Since AUDIO_VOLUME_NOTIFICATION_DATA is dynamic in length based on the
            //number of audio channels available we cannot just call PtrToStructure 
            //to get all data, thats why it is split up into two steps, first the static
            //data is marshalled into the data structure, then with some IntPtr math the
            //remaining floats are read from memory.

            var data = (AUDIO_VOLUME_NOTIFICATION_DATA) Marshal.PtrToStructure(NotifyData, typeof(AUDIO_VOLUME_NOTIFICATION_DATA));
            var NotificationData = new AudioVolumeNotificationData(data.bMuted, data.fMasterVolume);
            _Parent.FireNotification(NotificationData);
            return 0; //S_OK
        }
 internal void FireNotification(AudioVolumeNotificationData NotificationData)
 {
     OnVolumeNotification?.Invoke(NotificationData);
 }
Exemplo n.º 4
0
 private void VolNotify(AudioVolumeNotificationData data)
 {
     if (InvokeRequired)
         Invoke(new AudioEndpointVolumeNotificationDelegate(VolNotify),
                new object[] {data});
     else
     {
         if (!Moving)
             Value = data.MasterVolume;
         Mute = data.Muted;
     }
 }
Exemplo n.º 5
0
 internal void FireNotification(AudioVolumeNotificationData NotificationData)
 {
     if (OnVolumeNotification != null)
         OnVolumeNotification(NotificationData);
 }