HardLinks - Manage your library of common classes

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Diagnostics;

using Common;

using Crownwood.Magic.Common;
using Crownwood.Magic.Docking;

namespace HardLinks
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class FormMain : System.Windows.Forms.Form
	{
		private Links Links = new Links();

		private bool Loading = false;

		private string SelectedRealDirectory = "";
		private string SelectedLinkDirectory = "";
		private string SelectedFilename      = "";

		private DockingManager dm = null;

		private ListBox ListBoxRealDirectory = null;
		private ListBox ListBoxLinkDirectory = null;
		private System.ComponentModel.IContainer components;
		private System.Windows.Forms.CheckedListBox CheckedListBoxFiles;
		private System.Windows.Forms.ImageList ImageList;
		private System.Windows.Forms.ToolBar ToolBar;
		private System.Windows.Forms.ToolBarButton ToolBarButtonFileOpen;
		private System.Windows.Forms.ToolBarButton ToolBarButtonFileSave;
		private System.Windows.Forms.ToolBarButton ToolBarButtonSeparator1;
		private System.Windows.Forms.ToolBarButton ToolBarButtonFileNew;
		private System.Windows.Forms.ToolBarButton ToolBarButtonViewRefresh;
		private System.Windows.Forms.ToolBarButton ToolBarButtonSeparator2;
		private System.Windows.Forms.Timer Timer;
		private System.Windows.Forms.ToolBarButton ToolBarButtonHelpAbout;
		private System.Windows.Forms.ToolBarButton ToolBarButtonWinDiff;
		private System.Windows.Forms.ToolBarButton ToolBarButtonSeparator3;
		private System.Windows.Forms.ToolBarButton ToolBarButtonSeparator4;
		private System.Windows.Forms.ToolBarButton ToolBarButtonOptions;
		private System.Windows.Forms.ToolBarButton ToolBarButtonSeparator5;
		private System.Windows.Forms.ToolBarButton ToolBarButtonEditDelete;

		public FormMain()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			SelectedRealDirectory = Settings.Get( "SelectedRealDirectory" , "" );
			SelectedLinkDirectory = Settings.Get( "SelectedLinkDirectory" , "" );
			SelectedFilename      = Settings.Get( "SelectedFilename"      , "" );

		
			ListBoxRealDirectory = new ListBox();
			ListBoxLinkDirectory = new ListBox();

			ContextMenu ContextMenuRealDirectory = new ContextMenu();
			ContextMenuRealDirectory.MenuItems.Add( new MenuItem( "Add...", new EventHandler( OnAddRealDirectory ) ) );
			ContextMenuRealDirectory.MenuItems.Add( new MenuItem( "Remove", new EventHandler( OnRemoveRealDirectory ) ) );
			ListBoxRealDirectory.ContextMenu = ContextMenuRealDirectory;

			ContextMenu ContextMenuLinkDirectory = new ContextMenu();
			ContextMenuLinkDirectory.MenuItems.Add( new MenuItem( "Add...", new EventHandler( OnAddLinkDirectory ) ) );
			ContextMenuLinkDirectory.MenuItems.Add( new MenuItem( "Remove", new EventHandler( OnRemoveLinkDirectory ) ) );
			ListBoxLinkDirectory.ContextMenu = ContextMenuLinkDirectory;

			ContextMenu ContextMenuFiles = new ContextMenu();
			ContextMenuFiles.MenuItems.Add( new MenuItem( "Legend...", new EventHandler( OnFilesLegend ) ) );
			CheckedListBoxFiles.ContextMenu = ContextMenuFiles;

			dm = new DockingManager( this, VisualStyle.IDE );

			dm.InnerControl = CheckedListBoxFiles;
			dm.OuterControl = ToolBar;

			Content ContentRealDirectory = dm.Contents.Add( ListBoxRealDirectory, "Real Directories" );
			Content ContentLinkDirectory = dm.Contents.Add( ListBoxLinkDirectory, "Link Directories" );

			WindowContent wc = dm.AddContentWithState( ContentRealDirectory, State.DockLeft );
			Window w = dm.AddContentToZone( ContentLinkDirectory, wc.ParentZone, 1 );

			dm.ResizeBarVector = 7;
			wc.ParentZone.Width = 400;

			dm.ShowAllContents();

			ListBoxRealDirectory.Sorted = true;
			ListBoxLinkDirectory.Sorted = true;

			ListBoxRealDirectory.SelectedIndexChanged += new EventHandler( ListBoxRealDirectory_SelectedIndexChanged );
			ListBoxLinkDirectory.SelectedIndexChanged += new EventHandler( ListBoxLinkDirectory_SelectedIndexChanged );

			Timer.Enabled = true;
		}

		private void Timer_Tick(object sender, System.EventArgs e)
		{
			Timer.Enabled = false;
		
			OnFileNew();
		}

		private void FormMain_Closing(object sender, System.ComponentModel.CancelEventArgs e)
		{
			if ( ListBoxRealDirectory.SelectedIndex >= 0 ) Settings.Set( "SelectedRealDirectory" , ListBoxRealDirectory.SelectedItem.ToString() );
			if ( ListBoxLinkDirectory.SelectedIndex >= 0 ) Settings.Set( "SelectedLinkDirectory" , ListBoxLinkDirectory.SelectedItem.ToString() );
			if ( CheckedListBoxFiles .SelectedIndex >= 0 ) Settings.Set( "SelectedFilename"      , CheckedListBoxFiles  .Text );
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.components = new System.ComponentModel.Container();
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(FormMain));
			this.CheckedListBoxFiles = new System.Windows.Forms.CheckedListBox();
			this.ImageList = new System.Windows.Forms.ImageList(this.components);
			this.ToolBar = new System.Windows.Forms.ToolBar();
			this.ToolBarButtonFileNew = new System.Windows.Forms.ToolBarButton();
			this.ToolBarButtonFileSave = new System.Windows.Forms.ToolBarButton();
			this.ToolBarButtonFileOpen = new System.Windows.Forms.ToolBarButton();
			this.ToolBarButtonEditDelete = new System.Windows.Forms.ToolBarButton();
			this.ToolBarButtonSeparator1 = new System.Windows.Forms.ToolBarButton();
			this.ToolBarButtonViewRefresh = new System.Windows.Forms.ToolBarButton();
			this.ToolBarButtonSeparator2 = new System.Windows.Forms.ToolBarButton();
			this.ToolBarButtonWinDiff = new System.Windows.Forms.ToolBarButton();
			this.ToolBarButtonSeparator3 = new System.Windows.Forms.ToolBarButton();
			this.ToolBarButtonOptions = new System.Windows.Forms.ToolBarButton();
			this.ToolBarButtonSeparator4 = new System.Windows.Forms.ToolBarButton();
			this.ToolBarButtonHelpAbout = new System.Windows.Forms.ToolBarButton();
			this.ToolBarButtonSeparator5 = new System.Windows.Forms.ToolBarButton();
			this.Timer = new System.Windows.Forms.Timer(this.components);
			this.SuspendLayout();
			// 
			// CheckedListBoxFiles
			// 
			this.CheckedListBoxFiles.CheckOnClick = true;
			this.CheckedListBoxFiles.Dock = System.Windows.Forms.DockStyle.Fill;
			this.CheckedListBoxFiles.Location = new System.Drawing.Point(0, 26);
			this.CheckedListBoxFiles.Name = "CheckedListBoxFiles";
			this.CheckedListBoxFiles.Size = new System.Drawing.Size(632, 319);
			this.CheckedListBoxFiles.Sorted = true;
			this.CheckedListBoxFiles.TabIndex = 6;
			this.CheckedListBoxFiles.ItemCheck += new System.Windows.Forms.ItemCheckEventHandler(this.CheckedListBoxFiles_ItemCheck);
			// 
			// ImageList
			// 
			this.ImageList.ImageSize = new System.Drawing.Size(16, 16);
			this.ImageList.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("ImageList.ImageStream")));
			this.ImageList.TransparentColor = System.Drawing.Color.Transparent;
			// 
			// ToolBar
			// 
			this.ToolBar.Appearance = System.Windows.Forms.ToolBarAppearance.Flat;
			this.ToolBar.Buttons.AddRange(new System.Windows.Forms.ToolBarButton[] {
																					   this.ToolBarButtonFileNew,
																					   this.ToolBarButtonFileSave,
																					   this.ToolBarButtonFileOpen,
																					   this.ToolBarButtonEditDelete,
																					   this.ToolBarButtonSeparator1,
																					   this.ToolBarButtonViewRefresh,
																					   this.ToolBarButtonSeparator2,
																					   this.ToolBarButtonWinDiff,
																					   this.ToolBarButtonSeparator3,
																					   this.ToolBarButtonOptions,
																					   this.ToolBarButtonSeparator4,
																					   this.ToolBarButtonHelpAbout,
																					   this.ToolBarButtonSeparator5});
			this.ToolBar.ButtonSize = new System.Drawing.Size(23, 22);
			this.ToolBar.Divider = false;
			this.ToolBar.DropDownArrows = true;
			this.ToolBar.ImageList = this.ImageList;
			this.ToolBar.Location = new System.Drawing.Point(0, 0);
			this.ToolBar.Name = "ToolBar";
			this.ToolBar.ShowToolTips = true;
			this.ToolBar.Size = new System.Drawing.Size(632, 26);
			this.ToolBar.TabIndex = 0;
			this.ToolBar.ButtonClick += new System.Windows.Forms.ToolBarButtonClickEventHandler(this.ToolBar_ButtonClick);
			// 
			// ToolBarButtonFileNew
			// 
			this.ToolBarButtonFileNew.ImageIndex = 0;
			this.ToolBarButtonFileNew.ToolTipText = "Load from registry";
			this.ToolBarButtonFileNew.Visible = false;
			// 
			// ToolBarButtonFileSave
			// 
			this.ToolBarButtonFileSave.ImageIndex = 1;
			this.ToolBarButtonFileSave.ToolTipText = "Save to registry";
			this.ToolBarButtonFileSave.Visible = false;
			// 
			// ToolBarButtonFileOpen
			// 
			this.ToolBarButtonFileOpen.ImageIndex = 2;
			this.ToolBarButtonFileOpen.ToolTipText = "Add directory";
			// 
			// ToolBarButtonEditDelete
			// 
			this.ToolBarButtonEditDelete.ImageIndex = 3;
			this.ToolBarButtonEditDelete.ToolTipText = "Remove directory";
			// 
			// ToolBarButtonSeparator1
			// 
			this.ToolBarButtonSeparator1.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
			// 
			// ToolBarButtonViewRefresh
			// 
			this.ToolBarButtonViewRefresh.ImageIndex = 4;
			this.ToolBarButtonViewRefresh.ToolTipText = "Refresh";
			// 
			// ToolBarButtonSeparator2
			// 
			this.ToolBarButtonSeparator2.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
			// 
			// ToolBarButtonWinDiff
			// 
			this.ToolBarButtonWinDiff.ImageIndex = 5;
			this.ToolBarButtonWinDiff.ToolTipText = "WinDiff";
			// 
			// ToolBarButtonSeparator3
			// 
			this.ToolBarButtonSeparator3.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
			// 
			// ToolBarButtonOptions
			// 
			this.ToolBarButtonOptions.ImageIndex = 6;
			this.ToolBarButtonOptions.ToolTipText = "Options";
			// 
			// ToolBarButtonSeparator4
			// 
			this.ToolBarButtonSeparator4.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
			// 
			// ToolBarButtonHelpAbout
			// 
			this.ToolBarButtonHelpAbout.ImageIndex = 7;
			this.ToolBarButtonHelpAbout.ToolTipText = "About";
			// 
			// ToolBarButtonSeparator5
			// 
			this.ToolBarButtonSeparator5.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
			// 
			// Timer
			// 
			this.Timer.Tick += new System.EventHandler(this.Timer_Tick);
			// 
			// FormMain
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(632, 354);
			this.Controls.Add(this.CheckedListBoxFiles);
			this.Controls.Add(this.ToolBar);
			this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
			this.Name = "FormMain";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "HardLinks";
			this.Closing += new System.ComponentModel.CancelEventHandler(this.FormMain_Closing);
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run( new FormMain() );
		}

//-----------------------------------------------------------------------------

		private void ToolBar_ButtonClick( object sender, ToolBarButtonClickEventArgs e )
		{
			if ( e.Button == ToolBarButtonFileNew     ) OnFileNew     ();
			if ( e.Button == ToolBarButtonFileSave    ) OnFileSave    ();
			if ( e.Button == ToolBarButtonFileOpen    ) OnFileOpen    ();
			if ( e.Button == ToolBarButtonEditDelete  ) OnEditDelete  ();
			if ( e.Button == ToolBarButtonViewRefresh ) OnViewRefresh ();
			if ( e.Button == ToolBarButtonWinDiff     ) OnWinDiff     ();
			if ( e.Button == ToolBarButtonOptions     ) OnOptions     ();
			if ( e.Button == ToolBarButtonHelpAbout   ) OnHelpAbout   ();
		}

		private void OnAddRealDirectory( object sender, EventArgs e )
		{
			DlgScanDiskOptions dlg = new DlgScanDiskOptions();
			dlg.Text = "Add directory";

			RealDirectory RealDirectory = (RealDirectory) ListBoxRealDirectory.SelectedItem;
			if ( RealDirectory != null ) dlg.RealDirectory = RealDirectory.RealDirectoryName;

//			LinkDirectory LinkDirectory = (LinkDirectory) ListBoxLinkDirectory.SelectedItem;
//			if ( LinkDirectory != null ) dlg.LinkDirectory = LinkDirectory.LinkDirectoryName;

			if ( dlg.ShowDialog() != DialogResult.OK ) return;

			AddDirectories( dlg.RealDirectory, dlg.LinkDirectory );
		}

		private void OnAddLinkDirectory( object sender, EventArgs e )
		{
			DlgScanDiskOptions dlg = new DlgScanDiskOptions();
			dlg.Text = "Add directory";

			RealDirectory RealDirectory = (RealDirectory) ListBoxRealDirectory.SelectedItem;
			if ( RealDirectory != null ) dlg.RealDirectory = RealDirectory.RealDirectoryName;

			LinkDirectory LinkDirectory = (LinkDirectory) ListBoxLinkDirectory.SelectedItem;
			if ( LinkDirectory != null ) dlg.LinkDirectory = LinkDirectory.LinkDirectoryName;

			if ( dlg.ShowDialog() != DialogResult.OK ) return;

			AddDirectories( dlg.RealDirectory, dlg.LinkDirectory );
		}

		private void OnRemoveRealDirectory( object sender, EventArgs e )
		{
			RealDirectory RealDirectory = (RealDirectory) ListBoxRealDirectory.SelectedItem;
			if ( RealDirectory == null ) return;

			Links.RemoveDirectory( RealDirectory.RealDirectoryName, "" );

			Links.SaveToRegistry();
			UpdateFromLinks();
		}

		private void OnRemoveLinkDirectory( object sender, EventArgs e )
		{
			RealDirectory RealDirectory = (RealDirectory) ListBoxRealDirectory.SelectedItem;
			if ( RealDirectory == null ) return;

			LinkDirectory LinkDirectory = (LinkDirectory) ListBoxLinkDirectory.SelectedItem;
			if ( LinkDirectory == null ) return;

			Links.RemoveDirectory( RealDirectory.RealDirectoryName, LinkDirectory.LinkDirectoryName );

			Links.SaveToRegistry();
			UpdateFromLinks();
		}

		private void OnFilesLegend( object sender, EventArgs e )
		{
			MessageBox.Show(
				"Unchecked:\t No File\n" + 
				"Indeterminate:\t File Exists\n" +
				"Checked:\t\t Link Exists    ",
				"HardLinks" );
		}

//-----------------------------------------------------------------------------

		private void OnFileNew()
		{
			Links.LoadFromRegistry();
			Links.ScanDisk();
			UpdateFromLinks();
		}

		private void OnFileOpen()
		{
			DlgScanDiskOptions dlg = new DlgScanDiskOptions();
			dlg.Text = "Add directory";

			RealDirectory RealDirectory = (RealDirectory) ListBoxRealDirectory.SelectedItem;
			if ( RealDirectory != null ) dlg.RealDirectory = RealDirectory.RealDirectoryName;

			LinkDirectory LinkDirectory = (LinkDirectory) ListBoxLinkDirectory.SelectedItem;
			if ( LinkDirectory != null ) dlg.LinkDirectory = LinkDirectory.LinkDirectoryName;

			if ( dlg.ShowDialog() != DialogResult.OK ) return;

			AddDirectories( dlg.RealDirectory, dlg.LinkDirectory );
		}

		private void OnFileSave()
		{
			Links.SaveToRegistry();
		}

		private void OnEditDelete()
		{
			DlgScanDiskOptions dlg = new DlgScanDiskOptions();
			dlg.Text = "Remove directory";

			RealDirectory RealDirectory = (RealDirectory) ListBoxRealDirectory.SelectedItem;
			if ( RealDirectory != null ) dlg.RealDirectory = RealDirectory.RealDirectoryName;

			LinkDirectory LinkDirectory = (LinkDirectory) ListBoxLinkDirectory.SelectedItem;
			if ( LinkDirectory != null ) dlg.LinkDirectory = LinkDirectory.LinkDirectoryName;

			if ( dlg.ShowDialog() != DialogResult.OK ) return;

			Links.RemoveDirectory( dlg.RealDirectory, dlg.LinkDirectory );

			Links.SaveToRegistry();
			UpdateFromLinks();
		}

		private void OnViewRefresh()
		{
			Links.ScanDisk();
			UpdateFromLinks();
		}

		private void OnWinDiff()
		{
			if ( ListBoxRealDirectory.SelectedIndex < 0 ) return;
			if ( ListBoxLinkDirectory.SelectedIndex < 0 ) return;

			string RealDirectory = ListBoxRealDirectory.SelectedItem.ToString();
			string LinkDirectory = ListBoxLinkDirectory.SelectedItem.ToString();

			string WinDiff = Settings.Get( Global.WinDiff, Global.DefaultWinDiffPath );

			System.Diagnostics.Process.Start( WinDiff, "-O -D \"" + RealDirectory + "\" \"" + LinkDirectory + "\"" );
		}

		private void OnOptions()
		{
			string WinDiff = Settings.Get( Global.WinDiff, Global.DefaultWinDiffPath );

			DlgOptions dlg = new DlgOptions();
			dlg.WinDiff = WinDiff;
			if ( dlg.ShowDialog() != DialogResult.OK ) return;

			Settings.Set( Global.WinDiff, dlg.WinDiff );
		}

		private void OnHelpAbout()
		{
			DlgAbout dlg = new DlgAbout();
			dlg.ShowDialog();
		}

//-----------------------------------------------------------------------------

		private void SelectRealDirectory( string RealDirectory )
		{
			object oSelect = null;
			foreach ( object o in ListBoxRealDirectory.Items )
				if ( o.ToString() == RealDirectory )
					oSelect = o;

			ListBoxRealDirectory.SelectedItem = oSelect;
		}

		private void SelectLinkDirectory( string LinkDirectory )
		{
			object oSelect = null;
			foreach ( object o in ListBoxLinkDirectory.Items )
				if ( o.ToString() == LinkDirectory )
					oSelect = o;

			ListBoxLinkDirectory.SelectedItem = oSelect;
		}

		private void AddDirectories( string RealDirectory, string LinkDirectory )
		{
			if ( RealDirectory.Length == 0 ) return;

			if ( LinkDirectory.Length == 0 )
			{
				Links.AddDirectory( RealDirectory );
			}
			else
			{
				Links LinksToAdd = Methods.ScanDisk( RealDirectory, LinkDirectory );
				Links.Add( LinksToAdd );
			}

			Links.SaveToRegistry();
			UpdateFromLinks();

			SelectRealDirectory( RealDirectory );
			SelectLinkDirectory( LinkDirectory );
		}

//-----------------------------------------------------------------------------

		private void UpdateFromLinks()
		{
			//			if ( ComboBoxRealDirectory .SelectedIndex >= 0 ) SelectedRealDirectory = ComboBoxRealDirectory.Text ;
			//			if ( ComboBoxLinkDirectory .SelectedIndex >= 0 ) SelectedLinkDirectory = ComboBoxLinkDirectory.Text ;
			//			if ( CheckedListBoxFiles   .SelectedIndex >= 0 ) SelectedFilename      = CheckedListBoxFiles  .Text ;

			if ( ListBoxRealDirectory.SelectedIndex >= 0 ) SelectedRealDirectory = ListBoxRealDirectory.SelectedItem.ToString();
			if ( ListBoxLinkDirectory.SelectedIndex >= 0 ) SelectedLinkDirectory = ListBoxLinkDirectory.SelectedItem.ToString();
			if ( CheckedListBoxFiles .SelectedIndex >= 0 ) SelectedFilename = CheckedListBoxFiles.Text ;

			ListBoxRealDirectory.Items.Clear();
			ListBoxLinkDirectory.Items.Clear();
			CheckedListBoxFiles .Items.Clear();

			foreach ( RealDirectory RealDirectory in Links.RealDirectories.Values )
				ListBoxRealDirectory.Items.Add( RealDirectory );

			SelectRealDirectory( SelectedRealDirectory );
		}

		private void ListBoxRealDirectory_SelectedIndexChanged( object sender, System.EventArgs e )
		{
			if ( ListBoxLinkDirectory.SelectedIndex >= 0 ) SelectedLinkDirectory = ListBoxLinkDirectory.SelectedItem.ToString();
			if ( CheckedListBoxFiles .SelectedIndex >= 0 ) SelectedFilename = CheckedListBoxFiles.Text ;

			ListBoxLinkDirectory.Items.Clear();
			CheckedListBoxFiles .Items.Clear();

			RealDirectory RealDirectory = (RealDirectory) ListBoxRealDirectory.SelectedItem;

			foreach ( LinkDirectory LinkDirectory in RealDirectory.LinkDirectories.Values )
				ListBoxLinkDirectory.Items.Add( LinkDirectory );

			SelectLinkDirectory( SelectedLinkDirectory );
		}

		private void ListBoxLinkDirectory_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			if ( CheckedListBoxFiles.SelectedIndex >= 0 ) SelectedFilename = CheckedListBoxFiles.Text ;
			
			CheckedListBoxFiles.Items.Clear();

			LinkDirectory LinkDirectory = (LinkDirectory) ListBoxLinkDirectory.SelectedItem;

			Loading = true;

			foreach ( File File in LinkDirectory.Files.Values )
			{
				CheckState cs = CheckState.Indeterminate;
				switch ( File.Linked )
				{
				case Linked.Linked     : cs = CheckState.Checked       ; break;
				case Linked.FileExists : cs = CheckState.Indeterminate ; break;
				case Linked.NoFile     : cs = CheckState.Unchecked     ; break;
				default: Debug.Assert( false ); break;
				}
				CheckedListBoxFiles.Items.Add( File, cs );
			}

			Loading = false;

			CheckedListBoxFiles.Text = SelectedFilename;
		}

//-----------------------------------------------------------------------------

		private void CheckedListBoxFiles_ItemCheck( object sender, System.Windows.Forms.ItemCheckEventArgs e )
		{
			if ( Loading ) return;

			if ( e.CurrentValue == CheckState.Indeterminate )
				e.NewValue = CheckState.Unchecked;

			File File = (File) CheckedListBoxFiles.Items[ e.Index ];

			string RealFile = File.RealDirectoryName + "\\" + File.FileName;
			string LinkFile = File.LinkDirectoryName + "\\" + File.FileName;

			if ( e.NewValue == CheckState.Checked )
			{
				if ( ! Kernel32.CreateHardLink( LinkFile, RealFile, IntPtr.Zero ) )
				{
					string s = "Failed to create link : \n\nReal file : " + RealFile + "\nLink file : " + LinkFile;
					MessageBox.Show( s, "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning );
					e.NewValue = CheckState.Unchecked;
				}
				else
					File.Linked = Linked.Linked;
			}
			else
			{
				try
				{
					System.IO.File.Delete( LinkFile );
					File.Linked = Linked.NoFile;
				}
				catch
				{
					string s = "Failed to delete link : \n\nReal file : " + RealFile + "\nLink file : " + LinkFile;
					MessageBox.Show( s, "Warning", MessageBoxButtons.OK, MessageBoxIcon.Warning );
					e.NewValue = CheckState.Checked;
				}
			}
		}


//-----------------------------------------------------------------------------

	}
}