TaskbarNotifier, a skinnable MSN Messenger-like popup in C# and now in VB.NET too

protected ToastCollection m_ColToast = new ToastCollection();

  private TaskbarNotifier InitTaskBarNotifier(TaskbarNotifier notifier, Color titleColor)
  {
      notifier.Base = m_ColToast;
      notifier.SetBackgroundBitmap(new Bitmap(GetType(), "Images.notifierLiveMessengerSkin.png"), Color.FromArgb(255, 0, 255));
      notifier.SetCloseBitmap(new Bitmap(GetType(), "Images.notifierLiveMessengerClose.png"), Color.FromArgb(255, 0, 255), new Point(184, 9));
      notifier.TitleRectangle = new Rectangle(10, 3, 180, 20);
      notifier.ContentRectangle = new Rectangle(4, 28, 195, 84);
      notifier.ContentTextAlignement = ContentAlignment.MiddleCenter;
      notifier.NormalTitleColor = titleColor;
      notifier.CloseClickable = true;
      notifier.TitleClickable = false;
      notifier.ContentClickable = false;
      notifier.EnableSelectionRectangle = true;
      notifier.KeepVisibleOnMousOver = true;
      notifier.ReShowOnMouseOver = true;
      notifier.Padding = 0;
      notifier.AppearBySliding = false;
      return notifier;
  }

...
TaskbarNotifier m_NotifierTmp = InitTaskBarNotifier(new TaskbarNotifier(), titleColor);
m_NotifierTmp.Show(title, content, appearingDuration, showingDuration, disappearingDuration);
...

// C# TaskbarNotifier Class v1.0
// by John O'Byrne - 02 december 2002
// 01 april 2003 : Small fix in the OnMouseUp handler
// 11 january 2003 : Patrick Vanden Driessche <pvdd@devbrains.be> added a few enhancements
//           Small Enhancements/Bugfix
//           Small bugfix: When Content text measures larger than the corresponding ContentRectangle
//                         the focus rectangle was not correctly drawn. This has been solved.
//           Added KeepVisibleOnMouseOver
//           Added ReShowOnMouseOver
//           Added If the Title or Content are too long to fit in the corresponding Rectangles,
//                 the text is truncateed and the ellipses are appended (StringTrimming).
// Rev 003-CrustyAppleSniffer: Sliding or fading effect
// Rev 004-CrustyAppleSniffer: New Property: Padding
// Rev 005-CrustyAppleSniffer: New feature: Management of Toasts' Collection and last position storage
// Rev 006-CrustyAppleSniffer: New feature: Content alignement
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace CustomUIControls
{
    /// <summary>
    /// TaskbarNotifier allows to display Skinned instant messaging popups
    /// </summary>
    public class TaskbarNotifier : Form
    {
        #region TaskbarNotifier Protected Members
        protected Bitmap BackgroundBitmap = null;
        protected Bitmap CloseBitmap = null;
        protected Point CloseBitmapLocation;
        protected Size CloseBitmapSize;
        protected Rectangle RealTitleRectangle;
        protected Rectangle RealContentRectangle;
        protected Rectangle WorkAreaRectangle;
        protected Timer timer = new Timer();
        protected TaskbarStates taskbarState = TaskbarStates.hidden;
        protected string titleText;
        protected string contentText;
        protected Color normalTitleColor = Color.FromArgb(255, 255, 255);
        protected Color hoverTitleColor = Color.FromArgb(255, 0, 0);
        protected Color normalContentColor = Color.FromArgb(0, 0, 0);
        protected Color hoverContentColor = Color.FromArgb(0, 0, 0x66);
        protected Font normalTitleFont = new Font("Arial", 12, FontStyle.Regular | FontStyle.Bold, GraphicsUnit.Pixel);
        protected Font hoverTitleFont = new Font("Arial", 12, FontStyle.Bold, GraphicsUnit.Pixel);
        protected Font normalContentFont = new Font("Arial", 11, FontStyle.Regular, GraphicsUnit.Pixel);
        protected Font hoverContentFont = new Font("Arial", 11, FontStyle.Regular, GraphicsUnit.Pixel);
        protected int nShowEvents;
        protected int nHideEvents;
        protected int nVisibleEvents;
        protected int nIncrementShow;
        protected int nIncrementHide;
        protected bool bIsMouseOverPopup = false;
        protected bool bIsMouseOverClose = false;
        protected bool bIsMouseOverContent = false;
        protected bool bIsMouseOverTitle = false;
        protected bool bIsMouseDown = false;
        protected bool bKeepVisibleOnMouseOver = true;		// Added Rev 002
        protected bool bReShowOnMouseOver = false;		// Added Rev 002
        protected bool bAppearBySliding = true;		// Rev 003-CAS: Sliding or fading effect
        protected int nPadding = 10;				// Rev 004-CAS: New Property: Padding
        protected int nBaseWindowBottom = 0;			// Rev 005-CAS: New feature: Management of Toasts' Collection and last position storage
        protected int nBaseWindowRight = 0;			// Rev 005-CAS: New feature: Management of Toasts' Collection and last position storage
        protected ToastCollection colBase = null;		// Rev 005-CAS: New feature: Management of Toasts' Collection and last position storage
        protected bool bMoving = false;			// Rev 005-CAS: New feature: Management of Toasts' Collection and last position storage
        protected int nMouseDownX;				// Rev 005-CAS: New feature: Management of Toasts' Collection and last position storage
        protected int nMouseDownY;				// Rev 005-CAS: New feature: Management of Toasts' Collection and last position storage
        protected ContentAlignment caContentAlignement;         // Rev 006-CAS: New feature: Content alignement

        #endregion

        #region TaskbarNotifier Public Members
        public Rectangle TitleRectangle;
        public Rectangle ContentRectangle;
        public bool TitleClickable = false;
        public bool ContentClickable = true;
        public bool CloseClickable = true;
        public bool EnableSelectionRectangle = true;
        public event EventHandler CloseClick = null;
        public event EventHandler TitleClick = null;
        public event EventHandler ContentClick = null;
        #endregion

        #region TaskbarNotifier Enums
        /// <summary>
        /// List of the different popup animation status
        /// </summary>
        public enum TaskbarStates
        {
            hidden = 0,
            appearing = 1,
            visible = 2,
            disappearing = 3
        }
        #endregion

        #region TaskbarNotifier Constructor
        /// <summary>
        /// The Constructor for TaskbarNotifier
        /// </summary>
        public TaskbarNotifier()
        {
            // Window Style
            FormBorderStyle = FormBorderStyle.None;
            WindowState = FormWindowState.Minimized;
            //-CAS 29/08/2007: avoid taskbar flickering each time a Notifier is displayed
            // base.Show();
            base.Hide();
            WindowState = FormWindowState.Normal;
            ShowInTaskbar = false;
            TopMost = true;
            MaximizeBox = false;
            MinimizeBox = false;
            ControlBox = false;

            timer.Enabled = true;
            timer.Tick += new EventHandler(OnTimer);
        }
        #endregion

        #region TaskbarNotifier Properties
        /// <summary>
        /// Get the current TaskbarState (hidden, showing, visible, hiding)
        /// </summary>
        public TaskbarStates TaskbarState
        {
            get
            {
                return taskbarState;
            }
        }

        /// <summary>
        /// Get/Set the popup Title Text
        /// </summary>
        public string TitleText
        {
            get
            {
                return titleText;
            }
            set
            {
                titleText = value;
                Refresh();
            }
        }

        /// <summary>
        /// Get/Set the popup Content Text
        /// </summary>
        public string ContentText
        {
            get
            {
                return contentText;
            }
            set
            {
                contentText = value;
                Refresh();
            }
        }

        /// <summary>
        /// Get/Set the Normal Title Color
        /// </summary>
        public Color NormalTitleColor
        {
            get
            {
                return normalTitleColor;
            }
            set
            {
                normalTitleColor = value;
                Refresh();
            }
        }

        /// <summary>
        /// Get/Set the Hover Title Color
        /// </summary>
        public Color HoverTitleColor
        {
            get
            {
                return hoverTitleColor;
            }
            set
            {
                hoverTitleColor = value;
                Refresh();
            }
        }

        /// <summary>
        /// Get/Set the Normal Content Color
        /// </summary>
        public Color NormalContentColor
        {
            get
            {
                return normalContentColor;
            }
            set
            {
                normalContentColor = value;
                Refresh();
            }
        }

        /// <summary>
        /// Get/Set the Hover Content Color
        /// </summary>
        public Color HoverContentColor
        {
            get
            {
                return hoverContentColor;
            }
            set
            {
                hoverContentColor = value;
                Refresh();
            }
        }

        /// <summary>
        /// Get/Set the Normal Title Font
        /// </summary>
        public Font NormalTitleFont
        {
            get
            {
                return normalTitleFont;
            }
            set
            {
                normalTitleFont = value;
                Refresh();
            }
        }

        /// <summary>
        /// Get/Set the Hover Title Font
        /// </summary>
        public Font HoverTitleFont
        {
            get
            {
                return hoverTitleFont;
            }
            set
            {
                hoverTitleFont = value;
                Refresh();
            }
        }

        /// <summary>
        /// Get/Set the Normal Content Font
        /// </summary>
        public Font NormalContentFont
        {
            get
            {
                return normalContentFont;
            }
            set
            {
                normalContentFont = value;
                Refresh();
            }
        }

        /// <summary>
        /// Get/Set the Hover Content Font
        /// </summary>
        public Font HoverContentFont
        {
            get
            {
                return hoverContentFont;
            }
            set
            {
                hoverContentFont = value;
                Refresh();
            }
        }

        /// <summary>
        /// Indicates if the popup should remain visible when the mouse pointer is over it.
        /// Added Rev 002
        /// </summary>
        public bool KeepVisibleOnMousOver
        {
            get
            {
                return bKeepVisibleOnMouseOver;
            }
            set
            {
                bKeepVisibleOnMouseOver = value;
            }
        }

        /// <summary>
        /// Indicates if the popup should appear again when mouse moves over it while it's disappearing.
        /// Added Rev 002
        /// </summary>
        public bool ReShowOnMouseOver
        {
            get
            {
                return bReShowOnMouseOver;
            }
            set
            {
                bReShowOnMouseOver = value;
            }
        }

        /// <summary>
        /// Indicates if the popup should diplayed with fadding or slidding effect
        /// Added Rev 003-CAS
        /// </summary>
        public bool AppearBySliding
        {
            get
            {
                return bAppearBySliding;
            }
            set
            {
                bAppearBySliding = value;
            }
        }
        /// <summary>
        /// Get/Set the popup padding (distance between 2 popups)
        /// Added Rev 004-CAS: New Property: Padding
        /// </summary>
        public new int Padding
        {
            get
            {
                return nPadding;
            }
            set
            {
                nPadding = value;
                Refresh();
            }
        }
        /// <summary>
        /// Get/Set the popup distance from the working area bottom border due to popup stacking
        /// Added Rev 005-CAS: New feature: Management of Toasts' Collection and last position storage
        /// </summary>
        public int BaseWindowBottom
        {
            get
            {
                return nBaseWindowBottom;
            }
            set
            {
                nBaseWindowBottom = value;
                Refresh();
            }
        }
        /// <summary>
        /// Get/Set the popup distance from the working area right border due to popup stacking
        /// Added Rev 005-CAS: New feature: Management of Toasts' Collection and last position storage
        /// </summary>
        public int BaseWindowRight
        {
            get
            {
                return nBaseWindowRight;
            }
            set
            {
                nBaseWindowRight = value;
                Refresh();
            }
        }
        /// <summary>
        /// Get/Set the toast collection the popup belongs to
        /// Added Rev 005-CAS: New feature: Management of Toasts' Collection and last position storage
        /// </summary>
        public ToastCollection Base
        {
            get
            {
                return colBase;
            }
            set
            {
                colBase = value;
                Refresh();
            }
        }
        /// <summary>
        /// Get/Set the Content alignement property
        /// Added Rev 006-CAS: New feature: Content alignement
        /// </summary>
        public ContentAlignment ContentTextAlignement
        {
            get
            {
                return caContentAlignement;
            }
            set
            {
                caContentAlignement = value;
                Refresh();
            }
        }
        #end