developer/VSSDK/VisualStudioIntegration/Common/Source/CSharp/LanguageService100/Preferences.cs

   1 using Microsoft.VisualStudio.OLE.Interop;
   2 using Microsoft.VisualStudio.TextManager.Interop;
   3 using Microsoft.VisualStudio.Shell.Interop;
   4 using Microsoft.VisualStudio.Designer.Interfaces;
   5 using Microsoft.VisualStudio.Shell;
   6 using Microsoft.Win32;
   7 using System;
   8 using System.Collections;
   9 using System.ComponentModel;
  10 using System.Drawing;
  11 using System.Data;
  12 using System.Diagnostics;
  13 using System.Runtime.InteropServices;
  14 using System.Windows.Forms;
  15 using Microsoft.VisualStudio;
  16 using System.Globalization;
  17 using IOleServiceProvider = Microsoft.VisualStudio.OLE.Interop.IServiceProvider;
  18 using IServiceProvider = System.IServiceProvider;
  19 using VSRegistry = Microsoft.VisualStudio.Shell.VSRegistry;
  20
  21 namespace Microsoft.VisualStudio.Package {
  22     /// <include file='doc\Utilities.uex' path='docs/doc[@for="IndentingStyle"]/*' />
  23     public enum IndentingStyle {
  24         /// <include file='doc\Utilities.uex' path='docs/doc[@for="IndentingStyle.None"]/*' />
  25         None,
  26         /// <include file='doc\Utilities.uex' path='docs/doc[@for="IndentingStyle.Block"]/*' />
  27         Block,
  28         /// <include file='doc\Utilities.uex' path='docs/doc[@for="IndentingStyle.Smart"]/*' />
  29         Smart
  30     }
  31
  32     /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences"]/*' />
  33     /// <summary>
  34     /// LanguagePreferences encapsulates the standard General and Tab settings for a language service
  35     /// and provides a way of getting and setting the values.  It is expected that you
  36     /// will have one global LanguagePreferences created by your package.  The General and Tabs
  37     /// settings are automatically persisted in .vssettings files by the core editor package.
  38     /// All you need to do is register your language under AutomationProperties/TextEditor
  39     /// and specify:
  40     /// <code>
  41     ///  YourLanguage = s '%YourLocalizedName%'
  42     ///  {
  43     ///     val Name = s 'YourLanguage'
  44     ///     val Package = s '{F5E7E720-1401-11D1-883B-0000F87579D2}'
  45     ///     val ProfileSave = d 1
  46     ///     val ResourcePackage = s '%YourPackage%'
  47     ///  }
  48     /// </code>
  49     /// Therefore this class hides all it's properties from user setting persistence using
  50     /// DesignerSerializationVisibility.Hidden.  This is so that if you give this object
  51     /// to the Package.ExportSettings method as the AutomationObject then it will only
  52     /// write out your new settings which is what you want, otherwise the General and Tab
  53     /// settings will appear in two places in the .vsssettings file.
  54     /// </summary>
  55     [CLSCompliant(false),ComVisible(true), Guid("934a92fd-b63a-49c7-9284-11aec8c1e03f")]
  56     public class LanguagePreferences : IVsTextManagerEvents2, IDisposable {
  57         IServiceProvider site;
  58         Guid langSvc;
  59         LANGPREFERENCES2 prefs;
  60         NativeMethods.ConnectionPointCookie connection;
  61         bool enableCodeSense;
  62         bool enableMatchBraces;
  63         bool enableQuickInfo;
  64         bool enableShowMatchingBrace;
  65         bool enableMatchBracesAtCaret;
  66         bool enableFormatSelection;
  67         bool enableCommenting;
  68         int maxErrorMessages;
  69         int codeSenseDelay;
  70         bool enableAsyncCompletion;
  71         bool autoOutlining;
  72         int maxRegionTime;
  73         _HighlightMatchingBraceFlags braceFlags;
  74         string name;
  75
  76         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.LanguagePreferences"]/*' />
  77         /// <summary>
  78         /// Gets the language preferences.
  79         /// </summary>
  80         public LanguagePreferences(IServiceProvider site, Guid langSvc, string name) {
  81             this.site = site;
  82             this.langSvc = langSvc;
  83             this.name = name;
  84         }
  85
  86         /// <include file='doc\Preferences.uex' path='docs/doc[@for="LanguagePreferences.LanguagePreferences1"]/*' />
  87         public LanguagePreferences() { }
  88
  89         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.LanguageName;"]/*' />
  90         protected string LanguageName {
  91             get { return this.name; }
  92             set { this.name = value; }
  93         }
  94
  95         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.Site;"]/*' />
  96         /// <summary>
  97         /// This property is not public for a reason. If it were public it would
  98         /// get called during LoadSettingsFromStorage which will break it.
  99         /// Instead use GetSite().
 100         /// </summary>
 101         protected IServiceProvider Site {
 102             get { return this.site; }
 103             set { this.site = value; }
 104         }
 105
 106         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.Site;"]/*' />
 107         public IServiceProvider GetSite() {
 108             return this.site;
 109         }
 110
 111         // Our base language service perferences (from Babel originally)
 112         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.EnableCodeSense;"]/*' />
 113         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 114         public bool EnableCodeSense {
 115             get { return this.enableCodeSense; }
 116             set { this.enableCodeSense = value; }
 117         }
 118
 119         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.EnableMatchBraces;"]/*' />
 120         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 121         public bool EnableMatchBraces {
 122             get {
 123                 return this.enableMatchBraces; }
 124             set { this.enableMatchBraces = value; }
 125         }
 126
 127         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.EnableQuickInfo;"]/*' />
 128         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 129         public bool EnableQuickInfo {
 130             get { return this.enableQuickInfo; }
 131             set { this.enableQuickInfo = value; }
 132         }
 133
 134         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.EnableShowMatchingBrace;"]/*' />
 135         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 136         public bool EnableShowMatchingBrace {
 137             get { return this.enableShowMatchingBrace; }
 138             set { this.enableShowMatchingBrace = value; }
 139         }
 140
 141         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.EnableMatchBracesAtCaret;"]/*' />
 142         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 143         public bool EnableMatchBracesAtCaret {
 144             get { return this.enableMatchBracesAtCaret; }
 145             set { this.enableMatchBracesAtCaret = value; }
 146         }
 147
 148         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.MaxErrorMessages;"]/*' />
 149         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 150         public int MaxErrorMessages {
 151             get { return this.maxErrorMessages; }
 152             set { this.maxErrorMessages = value; }
 153         }
 154
 155         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.CodeSenseDelay;"]/*' />
 156         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 157         public int CodeSenseDelay {
 158             get { return this.codeSenseDelay; }
 159             set { this.codeSenseDelay = value; }
 160         }
 161
 162         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.EnableAsyncCompletion;"]/*' />
 163         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 164         public bool EnableAsyncCompletion {
 165             get { return this.enableAsyncCompletion; }
 166             set { this.enableAsyncCompletion = value; }
 167         }
 168
 169         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.EnableFormatSelection;"]/*' />
 170         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 171         public bool EnableFormatSelection {
 172             get { return this.enableFormatSelection; }
 173             set { this.enableFormatSelection = value; }
 174         }
 175
 176         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.EnableCommenting;"]/*' />
 177         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 178         public bool EnableCommenting {
 179             get { return this.enableCommenting; }
 180             set { this.enableCommenting = value; }
 181         }
 182
 183         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.MaxRegionTime;"]/*' />
 184         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 185         public int MaxRegionTime {
 186             get { return this.maxRegionTime; }
 187             set { this.maxRegionTime = value; }
 188         }
 189
 190         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.HighlightMatchingBraceFlags;"]/*' />
 191         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 192         public _HighlightMatchingBraceFlags HighlightMatchingBraceFlags {
 193             get { return this.braceFlags; }
 194             set { this.braceFlags = value; }
 195         }
 196
 197         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.Init"]/*' />
 198         public virtual void Init() {
 199             using (RegistryKey key = VSRegistry.RegistryRoot(__VsLocalRegistryType.RegType_Configuration)) {
 200                 if (key != null) {
 201                     InitMachinePreferences(key, name);
 202                 }
 203             }
 204             using (RegistryKey key = VSRegistry.RegistryRoot(__VsLocalRegistryType.RegType_UserSettings)) {
 205                 if (key != null) {
 206                     InitUserPreferences(key, name);
 207                 }
 208             }
 209             Connect();
 210         }
 211
 212         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.InitUserPreferences"]/*' />
 213         public virtual void InitUserPreferences(RegistryKey key, string name) {
 214             this.GetLanguagePreferences();
 215         }
 216                 /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.GetIntegerValue"]/*' />
 217                 public int GetIntegerValue(RegistryKey key, string name, int def) {
 218                         object o = key.GetValue(name);
 219                         if (o is int) return (int)o;
 220             int result;
 221             if (o is string && int.TryParse((string)o,NumberStyles.Integer, CultureInfo.InvariantCulture, out result))
 222                 return result;
 223             return def;
 224                 }
 225                 /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.GetBooleanValue"]/*' />
 226                 public bool GetBooleanValue(RegistryKey key, string name, bool def) {
 227                         object o = key.GetValue(name);
 228                         if (o is int) return ((int)o != 0);
 229             bool result;
 230             if (o is string && bool.TryParse((string)o,out result))
 231                 return result;
 232             return def;
 233                 }
 234
 235         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.InitMachinePreferences"]/*' />
 236         public virtual void InitMachinePreferences(RegistryKey key, string name)
 237         {
 238             using (RegistryKey keyLanguage = key.OpenSubKey("languages\\language services\\" + name, false))
 239             {
 240                 if (keyLanguage != null) {
 241                     this.EnableCodeSense = GetBooleanValue(keyLanguage, "CodeSense", true);
 242                     this.EnableMatchBraces = GetBooleanValue(keyLanguage, "MatchBraces", true);
 243                     this.EnableQuickInfo = GetBooleanValue(keyLanguage, "QuickInfo", true);
 244                     this.EnableShowMatchingBrace = GetBooleanValue(keyLanguage, "ShowMatchingBrace", true);
 245                     this.EnableMatchBracesAtCaret = GetBooleanValue(keyLanguage, "MatchBracesAtCaret", true);
 246                     this.MaxErrorMessages = GetIntegerValue(keyLanguage, "MaxErrorMessages", 10);
 247                     this.CodeSenseDelay = GetIntegerValue(keyLanguage, "CodeSenseDelay", 1000);
 248                     this.EnableAsyncCompletion = GetBooleanValue(keyLanguage, "EnableAsyncCompletion", true);
 249                     this.EnableFormatSelection = GetBooleanValue(keyLanguage, "EnableFormatSelection", false);
 250                     this.EnableCommenting = GetBooleanValue(keyLanguage, "EnableCommenting", true);
 251                     this.AutoOutlining = GetBooleanValue(keyLanguage, "AutoOutlining", true);
 252                     this.MaxRegionTime = GetIntegerValue(keyLanguage, "MaxRegionTime", 2000); // 2 seconds
 253                     this.braceFlags = (_HighlightMatchingBraceFlags)GetIntegerValue(keyLanguage, "HighlightMatchingBraceFlags", (int)_HighlightMatchingBraceFlags.HMB_USERECTANGLEBRACES);
 254                 }
 255             }
 256         }
 257
 258         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.Dispose"]/*' />
 259         public virtual void Dispose() {
 260             Disconnect();
 261             site = null;
 262         }
 263
 264         // General tab
 265         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.AutoListMembers"]/*' />
 266         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 267         public bool AutoListMembers {
 268             get { return prefs.fAutoListMembers != 0; }
 269             set { prefs.fAutoListMembers = (uint)(value ? 1 : 0); }
 270         }
 271
 272         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.HideAdvancedMembers"]/*' />
 273         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 274         public bool HideAdvancedMembers {
 275             get { return prefs.fHideAdvancedAutoListMembers != 0; }
 276             set { prefs.fHideAdvancedAutoListMembers = (uint)(value ? 1 : 0); }
 277         }
 278
 279         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.ParameterInformation"]/*' />
 280         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 281         public bool ParameterInformation {
 282             get { return prefs.fAutoListParams != 0; }
 283             set { prefs.fAutoListParams = (uint)(value ? 1 : 0); }
 284         }
 285
 286         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.VirtualSpace"]/*' />
 287         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 288         public bool VirtualSpace {
 289             get { return prefs.fVirtualSpace != 0; }
 290             set { prefs.fVirtualSpace = (uint)(value ? 1 : 0); }
 291         }
 292
 293         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.WordWrap"]/*' />
 294         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 295         public bool WordWrap {
 296             get { return prefs.fWordWrap != 0; }
 297             set { prefs.fWordWrap = (uint)(value ? 1 : 0); }
 298         }
 299
 300         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.WordWrapGlyphs"]/*' />
 301         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 302         public bool WordWrapGlyphs {
 303             get { return (int)prefs.fWordWrapGlyphs != 0; }
 304             set { prefs.fWordWrapGlyphs = (uint)(value ? 1 : 0); }
 305         }
 306
 307         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.CutCopyBlankLines"]/*' />
 308         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 309         public bool CutCopyBlankLines {
 310             get { return (int)prefs.fCutCopyBlanks != 0; }
 311             set { prefs.fCutCopyBlanks = (uint)(value ? 1 : 0); }
 312         }
 313
 314         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.LineNumbers"]/*' />
 315         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 316         public bool LineNumbers {
 317             get { return prefs.fLineNumbers != 0; }
 318             set { prefs.fLineNumbers = (uint)(value ? 1 : 0); }
 319         }
 320
 321         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.EnableLeftClickForURLs"]/*' />
 322         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 323         public bool EnableLeftClickForURLs {
 324             get { return prefs.fHotURLs != 0; }
 325             set { prefs.fHotURLs = (uint)(value ? 1 : 0); }
 326         }
 327
 328         // Tabs tab
 329         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.Indenting"]/*' />
 330         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 331         public IndentingStyle IndentStyle {
 332             get { return (IndentingStyle)prefs.IndentStyle; }
 333             set { prefs.IndentStyle = (vsIndentStyle)value; }
 334         }
 335
 336         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.TabSize"]/*' />
 337         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 338         public int TabSize {
 339             get { return (int)prefs.uTabSize; }
 340             set { prefs.uTabSize = (uint)value; }
 341         }
 342
 343         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.IndentSize"]/*' />
 344         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 345         public int IndentSize {
 346             get { return (int)prefs.uIndentSize; }
 347             set { prefs.uIndentSize = (uint)value; }
 348         }
 349
 350         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.InsertSpaces"]/*' />
 351         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 352         public bool InsertTabs {
 353             get { return prefs.fInsertTabs != 0; }
 354             set { prefs.fInsertTabs = (uint)(value ? 1 : 0); }
 355         }
 356
 357         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.ShowNavigationBar"]/*' />
 358         [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
 359         public bool ShowNavigationBar {
 360             get { return (int)prefs.fDropdownBar != 0; }
 361             set { prefs.fDropdownBar = (uint)(value ? 1 : 0); }
 362         }
 363
 364         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.EnableAutoOutlining"]/*' />
 365         public bool AutoOutlining {
 366             get { return this.autoOutlining; }
 367             set { this.autoOutlining = value; }
 368         }
 369
 370         /// <include file='doc\Preferences.uex' path='docs/doc[@for="LanguagePreferences.GetLanguagePrefs"]/*' />
 371         public virtual void GetLanguagePreferences() {
 372             IVsTextManager textMgr = site.GetService(typeof(SVsTextManager)) as IVsTextManager;
 373             if (textMgr != null) {
 374                 this.prefs.guidLang = langSvc;
 375                 IVsTextManager2 textMgr2 = site.GetService(typeof(SVsTextManager)) as IVsTextManager2;
 376                 if (textMgr != null) {
 377                     LANGPREFERENCES2[] langPrefs2 = new LANGPREFERENCES2[1];
 378                     langPrefs2[0] = this.prefs;
 379                     if (NativeMethods.Succeeded(textMgr2.GetUserPreferences2(null, null, langPrefs2, null))) {
 380                         this.prefs = langPrefs2[0];
 381                     } else {
 382                         Debug.Assert(false, "textMgr2.GetUserPreferences2");
 383                     }
 384                 }
 385             }
 386         }
 387
 388         /// <include file='doc\PropertySheet.uex' path='docs/doc[@for="LanguagePreferences.Apply"]/*' />
 389         public virtual void Apply() {
 390             IVsTextManager2 textMgr2 = site.GetService(typeof(SVsTextManager)) as IVsTextManager2;
 391             if (textMgr2 != null) {
 392                 this.prefs.guidLang = langSvc;
 393                 LANGPREFERENCES2[] langPrefs2 = new LANGPREFERENCES2[1];
 394                 langPrefs2[0] = this.prefs;
 395                 if (!NativeMethods.Succeeded(textMgr2.SetUserPreferences2(null, null, langPrefs2, null))) {
 396                     Debug.Assert(false, "textMgr2.SetUserPreferences2");
 397                 }
 398             }
 399         }
 400
 401         private void Connect() {
 402             if (this.connection == null && this.site != null) {
 403                 IVsTextManager2 textMgr2 = this.site.GetService(typeof(SVsTextManager)) as IVsTextManager2;
 404                 if (textMgr2 != null) {
 405                     this.connection = new NativeMethods.ConnectionPointCookie(textMgr2, (IVsTextManagerEvents2)this, typeof(IVsTextManagerEvents2));
 406                 }
 407             }
 408         }
 409
 410         private void Disconnect() {
 411             if (this.connection != null) {
 412                 this.connection.Dispose();
 413                 this.connection = null;
 414             }
 415         }
 416
 417         #region IVsTextManagerEvents2 Members
 418
 419         /// <include file='doc\Preferences.uex' path='docs/doc[@for="LanguagePreferences.OnRegisterMarkerType"]/*' />
 420         public virtual int OnRegisterMarkerType(int iMarkerType)
 421         {
 422             return NativeMethods.S_OK;
 423         }
 424         /// <include file='doc\Preferences.uex' path='docs/doc[@for="LanguagePreferences.OnRegisterView"]/*' />
 425         public virtual int OnRegisterView(IVsTextView view)
 426         {
 427             return NativeMethods.S_OK;
 428         }
 429         /// <include file='doc\Preferences.uex' path='docs/doc[@for="LanguagePreferences.OnUnregisterView"]/*' />
 430         public virtual int OnUnregisterView(IVsTextView view)
 431         {
 432             return NativeMethods.S_OK;
 433         }
 434         /// <include file='doc\Preferences.uex' path='docs/doc[@for="LanguagePreferences.OnReplaceAllInFilesBegin"]/*' />
 435         public virtual int OnReplaceAllInFilesBegin()
 436         {
 437             return NativeMethods.S_OK;
 438         }
 439         /// <include file='doc\Preferences.uex' path='docs/doc[@for="LanguagePreferences.OnReplaceAllInFilesEnd"]/*' />
 440         public virtual int OnReplaceAllInFilesEnd()
 441         {
 442             return NativeMethods.S_OK;
 443         }
 444
 445         /// <include file='doc\Preferences.uex' path='docs/doc[@for="LanguagePreferences.OnUserPreferencesChanged2"]/*' />
 446         public virtual int OnUserPreferencesChanged2(VIEWPREFERENCES2[] viewPrefs, FRAMEPREFERENCES2[] framePrefs, LANGPREFERENCES2[] langPrefs, FONTCOLORPREFERENCES2[] fontColorPrefs)
 447         {
 448             if (langPrefs != null && langPrefs.Length > 0 && langPrefs[0].guidLang == this.langSvc) {
 449                 this.prefs = langPrefs[0];
 450             }
 451             return NativeMethods.S_OK;
 452         }
 453
 454         #endregion
 455     }
 456 }