added "Launch HLM" to Help menu

data/resources/StringResources.resx

@@ -264,9 +264,15 @@ Download an AddIn from the Internet, then click 'Install AddIn' and choose the d
   <data name="AddIns.HelpViewer.HelpModeLabel" xml:space="preserve">
     <value>Help Mode</value>
   </data>
+  <data name="AddIns.HelpViewer.HLMNotFound" xml:space="preserve">
+    <value>Help Library Manager was not found. Please check if it was installed correctly.</value>
+  </data>
   <data name="AddIns.HelpViewer.InstalledHelpCatalogsLabel" xml:space="preserve">
     <value>Installed Help Catalogs</value>
   </data>
+  <data name="AddIns.HelpViewer.LaunchHelpLibraryManagerCommand" xml:space="preserve">
+    <value>Launch Help Library Manager</value>
+  </data>
   <data name="AddIns.HelpViewer.MicrosoftHelpViewerTitle" xml:space="preserve">
     <value>Microsoft Help Viewer</value>
   </data>

src/AddIns/Misc/HelpViewer/HelpViewer.addin

@@ -49,6 +49,11 @@
 		          class        = "MSHelpSystem.Commands.DisplaySearch"
 		          label        = "${res:AddIns.HelpViewer.DisplaySearchCommand}"
 		          shortcut     = ""
-		          insertbefore = "Separator1" />	
+		          insertbefore = "Separator1" />
+		<MenuItem id           = "LaunchHelpLibraryManager"
+		          class        = "MSHelpSystem.Commands.LaunchHelpLibraryManager"
+		          label        = "${res:AddIns.HelpViewer.LaunchHelpLibraryManagerCommand}"
+		          shortcut     = ""
+		          insertbefore = "Separator1" />
 	</Path>
 </AddIn>

src/AddIns/Misc/HelpViewer/Source/Commands.cs

@@ -3,6 +3,10 @@
 
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
+using System.Globalization;
+using System.IO;
+using Microsoft.Win32;
 using MSHelpSystem.Core;
 using MSHelpSystem.Controls;
 using ICSharpCode.Core;
@@ -11,8 +15,6 @@ using ICSharpCode.SharpDevelop.Gui;
 
 namespace MSHelpSystem.Commands
 {
-	// <owner name="Siegfried Pammer" email="sie_pam@gmx.at"/>
-	// <version>$Revision: 3555 $</version>
 	public class ShowErrorHelpCommand : AbstractMenuCommand
 	{
 		public override void Run()
@@ -33,8 +35,7 @@ namespace MSHelpSystem.Commands
 						DisplayHelp.Keywords(code);
 					else
 						DisplayHelp.ContextualHelp(code);
-				}
-				else {
+				} else {
 					LoggingService.Error("Help 3.0: Help system ist not initialized");
 				}
 			}
@@ -61,4 +62,23 @@ namespace MSHelpSystem.Commands
 			if (search != null) search.BringPadToFront();
 		}
 	}
+	
+	public class LaunchHelpLibraryManager : AbstractMenuCommand
+	{
+		public override void Run()
+		{
+			string path;
+			if (!RegistryService.GetRegistryValue(RegistryHive.LocalMachine, @"SOFTWARE\Microsoft\Help\v1.0",
+			                                      "AppRoot", RegistryValueKind.String, out path)) {
+				MessageService.ShowError("${res:AddIns.HelpViewer.HLMNotFound}");
+				return;
+			}
+			path = Path.Combine(path, "HelpLibManager.exe");
+			if (!File.Exists(path)) {
+				MessageService.ShowError("${res:AddIns.HelpViewer.HLMNotFound}");
+				return;
+			}
+			Process.Start(path, string.Format("/product {0} /version {1} /locale {2}", Help3Service.Config.ActiveCatalogId.Split('/')));
+		}
+	}
 }