Observable property pattern, memory leaks, and weak delegates for .NET

using System;
using System.Drawing;
using System.Threading;
using System.Windows.Forms;

namespace Pvax.App.WinFormsIdleTest
{
	/// <summary>
	/// Description of StickyForm.
	/// </summary>
	public class StickyForm : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label lblIndicator;
		const int HogSize = 102400 * 1024; // 100 Kb chunks go to the large objects heap

		byte[] hog;

		const string phases = @"-/|\";

		int currentPhase = 0;

		public StickyForm()
		{
			hog = new byte[HogSize];
			for(int i = 0; i < hog.Length; i++)
				hog[i] = 5;
			InitializeComponent();
		}

		#region Windows Forms Designer generated code
		/// <summary>
		/// This method is required for Windows Forms designer support.
		/// Do not change the method contents inside the source code editor. The Forms designer might
		/// not be able to load this method if it was changed manually.
		/// </summary>
		private void InitializeComponent()
		{
			this.lblIndicator = new System.Windows.Forms.Label();
			this.SuspendLayout();
			// 
			// lblIndicator
			// 
			this.lblIndicator.Dock = System.Windows.Forms.DockStyle.Fill;
			this.lblIndicator.Location = new System.Drawing.Point(0, 0);
			this.lblIndicator.Name = "lblIndicator";
			this.lblIndicator.Size = new System.Drawing.Size(152, 110);
			this.lblIndicator.TabIndex = 1;
			this.lblIndicator.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// StickyForm
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(152, 110);
			this.Controls.Add(this.lblIndicator);
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "StickyForm";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
			this.Text = "OnIdle handler";
			this.ResumeLayout(false);
		}
		#endregion

		public void OnIdle(object sender, EventArgs e)
		{
			this.lblIndicator.Text = "" + phases[currentPhase];
			currentPhase++;
			if(phases.Length == currentPhase)
				currentPhase = 0;
		}
	}
}