Toasts – Diff between revs 12 and 15

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 // =====COPYRIGHT=====
 // Code originally retrieved from http://www.vbforums.com/showthread.php?t=547778 - no license information supplied
 // =====COPYRIGHT=====
 using System;
-using System.Collections.Generic;
+using System.Collections.Concurrent;
 using System.Drawing;
+using System.IO;
-using System.IO;
+using System.Linq;
 using System.Media;
 using System.Windows.Forms;
 using Toasts.Properties;
 namespace Toasts
+{
     public partial class ToastForm : Form
     {
-        #region Static Fields and Constants
-        private static readonly List<ToastForm> OpenNotifications = new List<ToastForm>();
-        #endregion
-        #region Public Methods
-        /// <summary>
-        ///     Displays the form
-        /// </summary>
-        /// <remarks>
-        ///     Required to allow the form to determine the current foreground window before being displayed
-        /// </remarks>
-        public new void Show()
-        {
-            // Determine the current foreground window so it can be reactivated each time this form tries to get the focus
-            _currentForegroundWindow = NativeMethods.GetForegroundWindow();
         #region Static Fields and Constants
             base.Show();
         #region Constructors, Destructors and Finalizers
         private ToastForm()
+        {
+            InitializeComponent();
+            foreach (var control in Controls.Cast<Control>())
+            {
+                control.Click += Toast_Click;
+            }
+            Click += Toast_Click;
+            _toastTimer = new System.Timers.Timer();
+            _toastTimer.Elapsed += ToastTimer_Elapsed;
-            InitializeComponent();
+            _toastTimer.Enabled = false;
+        }
         /// <summary>
-        /// <summary>
+        /// Display a toast with a title, body and a logo indefinitely on screen.
         /// </summary>
-        /// <param name="title"></param>
+        /// <param name="title">the toast title</param>
+        /// <param name="body">the toast body</param>
+        /// <param name="logo">the toast logo</param>
+        public ToastForm(string title, string body, Image logo) : this()
+        {
+            _toastTimer.Enabled = false;
+            labelTitle.Text = title;
+            labelBody.Text = body;
+            imageBox.Image = logo;
+            _animator = new FormAnimator(this, FormAnimator.AnimationMethod.Slide, FormAnimator.AnimationDirection.Up,
+);
+            Region = Region.FromHrgn(NativeMethods.CreateRoundRectRgn(0, 0, Width - 5, Height - 5, 20, 20));
+        }
+        /// <summary>
-        /// <param name="body"></param>
+        /// Display a toast on screen.
-        /// <param name="duration"></param>
+        /// </summary>
+        /// <param name="title">the toast title</param>
-        /// <param name="image"></param>
+        /// <param name="body">the toast body</param>
+        /// <param name="duration">the duration in milliseconds to display the toast on screen for</param>
+        /// <param name="logo">the toast logo</param>
+        /// <param name="background">the background image for the toast</param>
+        /// <param name="sound">a sound to play when the toast is displayed</param>
-        /// <param name="animation"></param>
+        /// <param name="animation">the form animation type <see cref="FormAnimator"/></param>
-        /// <param name="direction"></param>
+        /// <param name="direction">the form animation direction <see cref="FormAnimator"/></param>
         public ToastForm(string title, string body, int duration, Image logo, Image background, byte[] sound,
+            FormAnimator.AnimationMethod animation, FormAnimator.AnimationDirection direction) : this()
-            FormAnimator.AnimationMethod animation, FormAnimator.AnimationDirection direction) : this()
+        {
             _toastTimer.Enabled = true;
-            lifeTimer.Interval = duration;
+            _toastTimer.Interval = duration;
             labelTitle.Text = title;
             labelBody.Text = body;
             _animator = new FormAnimator(this, animation, direction, 500);
             Region = Region.FromHrgn(NativeMethods.CreateRoundRectRgn(0, 0, Width - 5, Height - 5, 20, 20));
+        }
+        /// <summary>
+        /// Display a toast on screen.
+        /// </summary>
+        /// <param name="title">the toast title</param>
+        /// <param name="body">the toast body</param>
+        /// <param name="duration">the duration in milliseconds to display the toast on screen for</param>
+        /// <param name="logo">the toast logo</param>
+        /// <param name="sound">a sound to play when the toast is displayed</param>
         /// <param name="animation">the form animation type <see cref="FormAnimator"/></param>
         /// <param name="direction">the form animation direction <see cref="FormAnimator"/></param>
         public ToastForm(string title, string body, int duration, Image logo, byte[] sound,
+            FormAnimator.AnimationMethod animation, FormAnimator.AnimationDirection direction) : this()
-            FormAnimator.AnimationMethod animation, FormAnimator.AnimationDirection direction) : this()
+        {
             _toastTimer.Enabled = true;
-            lifeTimer.Interval = duration;
+            _toastTimer.Interval = duration;
             labelTitle.Text = title;
             labelBody.Text = body;
             _animator = new FormAnimator(this, animation, direction, 500);
             Region = Region.FromHrgn(NativeMethods.CreateRoundRectRgn(0, 0, Width - 5, Height - 5, 20, 20));
+        }
+        /// <summary>
+        /// Display a toast on screen.
+        /// </summary>
+        /// <param name="title">the toast title</param>
+        /// <param name="body">the toast body</param>
+        /// <param name="duration">the duration in milliseconds to display the toast on screen for</param>
         /// <param name="logo">the toast logo</param>
         /// <param name="sound">a sound to play when the toast is displayed</param>
+        public ToastForm(string title, string body, int duration, Image logo, byte[] sound) : this()
-        public ToastForm(string title, string body, int duration, Image logo, byte[] sound) : this()
+        {
             _toastTimer.Enabled = true;
-            lifeTimer.Interval = duration;
+            _toastTimer.Interval = duration;
             labelTitle.Text = title;
             labelBody.Text = body;
 );
             Region = Region.FromHrgn(NativeMethods.CreateRoundRectRgn(0, 0, Width - 5, Height - 5, 20, 20));
+        }
+        /// <summary>
+        /// Display a toast on screen.
+        /// </summary>
+        /// <param name="title">the toast title</param>
+        /// <param name="body">the toast body</param>
         /// <param name="duration">the duration in milliseconds to display the toast on screen for</param>
         /// <param name="logo">the toast logo</param>
+        public ToastForm(string title, string body, int duration, Image logo) : this()
-        public ToastForm(string title, string body, int duration, Image logo) : this()
+        {
             _toastTimer.Enabled = true;
-            lifeTimer.Interval = duration;
+            _toastTimer.Interval = duration;
             labelTitle.Text = title;
             labelBody.Text = body;
             imageBox.Image = logo;
             _animator = new FormAnimator(this, FormAnimator.AnimationMethod.Slide, FormAnimator.AnimationDirection.Up,
+);
+            Region = Region.FromHrgn(NativeMethods.CreateRoundRectRgn(0, 0, Width - 5, Height - 5, 20, 20));
+        }
+        /// <summary>
+        /// Display a toast on screen.
-);
+        /// </summary>
         /// <param name="title">the toast title</param>
-            Region = Region.FromHrgn(NativeMethods.CreateRoundRectRgn(0, 0, Width - 5, Height - 5, 20, 20));
+        /// <param name="body">the toast body</param>
         /// <param name="duration">the duration in milliseconds to display the toast on screen for</param>
         /// <param name="logo">the toast logo</param>
         public ToastForm(string title, string body, int duration, Icon logo) : this()
+        {
         #region Private Delegates, Events, Enums, Properties, Indexers and Fields
-        private readonly FormAnimator _animator;
-        private bool _allowFocus;
+        private readonly FormAnimator _animator;
-        private IntPtr _currentForegroundWindow;
+        private byte[] _sound;
-        private byte[] _sound;
+        private readonly System.Timers.Timer _toastTimer;
+                {
                     player.Play();
+                }
+            }
-            // Display the form just above the system tray.
-            Location = new Point(Screen.PrimaryScreen.WorkingArea.Width - Width,
-                Screen.PrimaryScreen.WorkingArea.Height - Height);
             // Move each open form upwards to make room for this one
-            foreach (var openForm in OpenNotifications)
+            foreach (var openForm in OpenNotifications.Values)
+            {
                 if (openForm.InvokeRequired)
+                {
+                    void Move()
-                {
+                    {
+                        openForm.Top -= Height;
+                    }
-                    Action action = delegate { openForm.Top -= Height; };
-                    openForm.Invoke(action);
+                    openForm.Invoke((Action)Move);
                     continue;
+                }
+                openForm.Top -= Height;
-                openForm.Top -= Height;
+            }
-            }
-            OpenNotifications.Add(this);
+            // Display the form just above the system tray.
-            lifeTimer.Start();
+            Location = new Point(Screen.PrimaryScreen.WorkingArea.Width - Width,
-        }
+                Screen.PrimaryScreen.WorkingArea.Height - Height);
-        private void Notification_Activated(object sender, EventArgs e)
+            OpenNotifications.TryAdd(Handle, this);
             // Only start the timer if it has been enabled in the constructor.
-            // Prevent the form taking focus when it is initially shown
+            if (_toastTimer.Enabled)
             if (!_allowFocus)
-                // Activate the window that previously had focus
-                NativeMethods.SetForegroundWindow(_currentForegroundWindow);
-        }
                 _toastTimer.Start();
         private void Notification_Shown(object sender, EventArgs e)
+        }
             // Once the animation has completed the form can receive focus
-            _allowFocus = true;
+        private void Notification_Shown(object sender, EventArgs e)
+        {
             // Close the form by sliding down.
             _animator.Duration = 0;
             _animator.Direction = FormAnimator.AnimationDirection.Down;
         }
-        private void Notification_FormClosed(object sender, FormClosedEventArgs e)
         private void Notification_FormClosed(object sender, FormClosedEventArgs e)
             // Move down any open forms above this one
+            // Move down any open forms above this one
+            foreach (var openForm in OpenNotifications.Values)
-            foreach (var openForm in OpenNotifications)
+            {
+                if (openForm.Handle == Handle)
+                    continue;
-            {
+                if (openForm.InvokeRequired)
+                {
-                if (openForm == this)
+                    void Move()
+                    {
+                        openForm.Top += Height;
                     // Remaining forms are below this one
-                    break;
                     openForm.Invoke((Action)Move);
-                if (openForm.InvokeRequired)
                     continue;
-                    Action action = delegate { openForm.Top += Height; };
+                }
-                    openForm.Invoke(action);
+                openForm.Top += Height;
-                }
-            }
+            }
-            OpenNotifications.Remove(this);
-        }
-        private void LifeTimer_Tick(object sender, EventArgs e)
+            OpenNotifications.TryRemove(Handle, out _);
+        }
-            Close();
         private void ToastTimer_Elapsed(object sender, EventArgs e)
+        {
-        private void Notification_Click(object sender, EventArgs e)
+            if (InvokeRequired)
+            {