Avoiding IDisposable while still working with unmanaged resources

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

using Pvax.Shell;

namespace LinkView
{
	/// <summary>
	/// Description of MainForm.
	/// </summary>
	public class MainForm : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox tbWorkingFolder;
		private System.Windows.Forms.Label dropPanel;
		private System.Windows.Forms.TextBox tbTarget;
		private System.Windows.Forms.TextBox tbDescription;

		public MainForm()
		{
			InitializeComponent();
		}

		[STAThread]
		public static void Main(string[] args)
		{
			Application.Run(new MainForm());
		}

		#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.tbDescription = new System.Windows.Forms.TextBox();
			this.tbTarget = new System.Windows.Forms.TextBox();
			this.dropPanel = new System.Windows.Forms.Label();
			this.tbWorkingFolder = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.label3 = new System.Windows.Forms.Label();
			this.SuspendLayout();
			//
			// tbDescription
			//
			this.tbDescription.Location = new System.Drawing.Point(8, 144);
			this.tbDescription.Multiline = true;
			this.tbDescription.Name = "tbDescription";
			this.tbDescription.Size = new System.Drawing.Size(296, 64);
			this.tbDescription.TabIndex = 5;
			this.tbDescription.Text = "";
			//
			// tbTarget
			//
			this.tbTarget.Location = new System.Drawing.Point(8, 32);
			this.tbTarget.Name = "tbTarget";
			this.tbTarget.Size = new System.Drawing.Size(296, 20);
			this.tbTarget.TabIndex = 1;
			this.tbTarget.Text = "";
			//
			// dropPanel
			//
			this.dropPanel.AllowDrop = true;
			this.dropPanel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
			this.dropPanel.Font = new System.Drawing.Font("Times New Roman", 26F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.World, ((System.Byte)(204)));
			this.dropPanel.Location = new System.Drawing.Point(8, 216);
			this.dropPanel.Name = "dropPanel";
			this.dropPanel.Size = new System.Drawing.Size(296, 96);
			this.dropPanel.TabIndex = 7;
			this.dropPanel.Text = "Drop shortcuts here";
			this.dropPanel.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			this.dropPanel.DragEnter += new System.Windows.Forms.DragEventHandler(this.DropPanelDragEnter);
			this.dropPanel.DragDrop += new System.Windows.Forms.DragEventHandler(this.DropPanelDragDrop);
			//
			// tbWorkingFolder
			//
			this.tbWorkingFolder.Location = new System.Drawing.Point(8, 88);
			this.tbWorkingFolder.Name = "tbWorkingFolder";
			this.tbWorkingFolder.Size = new System.Drawing.Size(296, 20);
			this.tbWorkingFolder.TabIndex = 3;
			this.tbWorkingFolder.Text = "";
			//
			// label1
			//
			this.label1.Location = new System.Drawing.Point(8, 8);
			this.label1.Name = "label1";
			this.label1.TabIndex = 0;
			this.label1.Text = "Target:";
			//
			// label2
			//
			this.label2.Location = new System.Drawing.Point(8, 64);
			this.label2.Name = "label2";
			this.label2.TabIndex = 2;
			this.label2.Text = "Working folder:";
			//
			// label3
			//
			this.label3.Location = new System.Drawing.Point(8, 120);
			this.label3.Name = "label3";
			this.label3.TabIndex = 4;
			this.label3.Text = "Description:";
			//
			// MainForm
			//
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(312, 324);
			this.Controls.Add(this.dropPanel);
			this.Controls.Add(this.tbDescription);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.tbWorkingFolder);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.tbTarget);
			this.Controls.Add(this.label1);
			this.Name = "MainForm";
			this.Text = "MainForm";
			this.ResumeLayout(false);
		}
		#endregion

		void DropPanelDragDrop(object sender, System.Windows.Forms.DragEventArgs e)
		{
			if(e.Data.GetDataPresent(DataFormats.FileDrop))
			{
				string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);
				ShellLink link = new ShellLink();
				link.Load(files[0]);
				tbTarget.Text = link.Path;
				tbDescription.Text = link.Description;
				tbWorkingFolder.Text = link.WorkingDirectory;
			}
		}

		void DropPanelDragEnter(object sender, System.Windows.Forms.DragEventArgs e)
		{
			if(e.Data.GetDataPresent(DataFormats.FileDrop))
				e.Effect = DragDropEffects.Copy;
			else
				e.Effect = DragDropEffects.None;
		}

	}
}