Inheritance: ComTypeDesc, IDynamicMetaObjectProvider
        internal static ComTypeLibDesc GetFromTypeLib(ComTypes.ITypeLib typeLib)
        {
            // check whether we have already loaded this type library
            ComTypes.TYPELIBATTR typeLibAttr = ComRuntimeHelpers.GetTypeAttrForTypeLib(typeLib);
            ComTypeLibDesc       typeLibDesc;

            lock (_CachedTypeLibDesc) {
                if (_CachedTypeLibDesc.TryGetValue(typeLibAttr.guid, out typeLibDesc))
                {
                    return(typeLibDesc);
                }
            }

            typeLibDesc = new ComTypeLibDesc();

            typeLibDesc._typeLibName       = ComRuntimeHelpers.GetNameOfLib(typeLib);
            typeLibDesc._typeLibAttributes = typeLibAttr;

            int countTypes = typeLib.GetTypeInfoCount();

            for (int i = 0; i < countTypes; i++)
            {
                ComTypes.TYPEKIND typeKind;
                typeLib.GetTypeInfoType(i, out typeKind);

                ComTypes.ITypeInfo typeInfo;
                if (typeKind == ComTypes.TYPEKIND.TKIND_COCLASS)
                {
                    typeLib.GetTypeInfo(i, out typeInfo);
                    ComTypeClassDesc classDesc = new ComTypeClassDesc(typeInfo, typeLibDesc);
                    typeLibDesc._classes.AddLast(classDesc);
                }
                else if (typeKind == ComTypes.TYPEKIND.TKIND_ENUM)
                {
                    typeLib.GetTypeInfo(i, out typeInfo);
                    ComTypeEnumDesc enumDesc = new ComTypeEnumDesc(typeInfo, typeLibDesc);
                    typeLibDesc._enums.Add(enumDesc.TypeName, enumDesc);
                }
            }

            // cached the typelib using the guid as the dictionary key
            lock (_CachedTypeLibDesc) {
                _CachedTypeLibDesc.Add(typeLibAttr.guid, typeLibDesc);
            }

            return(typeLibDesc);
        }
 internal TypeEnumMetaObject(ComTypeEnumDesc desc, Expression expression)
     : base(expression, BindingRestrictions.Empty, desc)
 {
     _desc = desc;
 }
 internal TypeEnumMetaObject(ComTypeEnumDesc desc, Expression expression)
     : base(expression, Restrictions.Empty, desc) {
     _desc = desc;
 }
        internal static ComTypeLibDesc GetFromTypeLib(ComTypes.ITypeLib typeLib)
        {
            // check whether we have already loaded this type library
            ComTypes.TYPELIBATTR typeLibAttr = ComRuntimeHelpers.GetTypeAttrForTypeLib(typeLib);
            ComTypeLibDesc       typeLibDesc;

            lock (_CachedTypeLibDesc) {
                if (_CachedTypeLibDesc.TryGetValue(typeLibAttr.guid, out typeLibDesc))
                {
                    return(typeLibDesc);
                }
            }

            typeLibDesc = new ComTypeLibDesc();

            typeLibDesc._typeLibName       = ComRuntimeHelpers.GetNameOfLib(typeLib);
            typeLibDesc._typeLibAttributes = typeLibAttr;

            int countTypes = typeLib.GetTypeInfoCount();

            for (int i = 0; i < countTypes; i++)
            {
                ComTypes.TYPEKIND typeKind;
                typeLib.GetTypeInfoType(i, out typeKind);

                ComTypes.ITypeInfo typeInfo;
                typeLib.GetTypeInfo(i, out typeInfo);
                if (typeKind == ComTypes.TYPEKIND.TKIND_COCLASS)
                {
                    ComTypeClassDesc classDesc = new ComTypeClassDesc(typeInfo, typeLibDesc);
                    typeLibDesc._classes.AddLast(classDesc);
                }
                else if (typeKind == ComTypes.TYPEKIND.TKIND_ENUM)
                {
                    ComTypeEnumDesc enumDesc = new ComTypeEnumDesc(typeInfo, typeLibDesc);
                    typeLibDesc._enums.Add(enumDesc.TypeName, enumDesc);
                }
                else if (typeKind == ComTypes.TYPEKIND.TKIND_ALIAS)
                {
                    ComTypes.TYPEATTR typeAttr = ComRuntimeHelpers.GetTypeAttrForTypeInfo(typeInfo);
                    if (typeAttr.tdescAlias.vt == (short)VarEnum.VT_USERDEFINED)
                    {
                        string aliasName, documentation;
                        ComRuntimeHelpers.GetInfoFromType(typeInfo, out aliasName, out documentation);

                        ComTypes.ITypeInfo referencedTypeInfo;
                        typeInfo.GetRefTypeInfo(typeAttr.tdescAlias.lpValue.ToInt32(), out referencedTypeInfo);

                        ComTypes.TYPEATTR referencedTypeAttr = ComRuntimeHelpers.GetTypeAttrForTypeInfo(referencedTypeInfo);
                        ComTypes.TYPEKIND referencedTypeKind = referencedTypeAttr.typekind;

                        if (referencedTypeKind == ComTypes.TYPEKIND.TKIND_ENUM)
                        {
                            ComTypeEnumDesc enumDesc = new ComTypeEnumDesc(referencedTypeInfo, typeLibDesc);
                            typeLibDesc._enums.Add(aliasName, enumDesc);
                        }
                    }
                }
            }

            // cached the typelib using the guid as the dictionary key
            lock (_CachedTypeLibDesc) {
                _CachedTypeLibDesc.Add(typeLibAttr.guid, typeLibDesc);
            }

            return(typeLibDesc);
        }
        internal static ComTypeLibDesc GetFromTypeLib(ComTypes.ITypeLib typeLib) {
            // check whether we have already loaded this type library
            ComTypes.TYPELIBATTR typeLibAttr = ComRuntimeHelpers.GetTypeAttrForTypeLib(typeLib);
            ComTypeLibDesc typeLibDesc;
            lock (_CachedTypeLibDesc) {
                if (_CachedTypeLibDesc.TryGetValue(typeLibAttr.guid, out typeLibDesc)) {
                    return typeLibDesc;
                }
            }

            typeLibDesc = new ComTypeLibDesc();

            typeLibDesc._typeLibName = ComRuntimeHelpers.GetNameOfLib(typeLib);
            typeLibDesc._typeLibAttributes = typeLibAttr;

            int countTypes = typeLib.GetTypeInfoCount();
            for (int i = 0; i < countTypes; i++) {
                ComTypes.TYPEKIND typeKind;
                typeLib.GetTypeInfoType(i, out typeKind);

                ComTypes.ITypeInfo typeInfo;
                if (typeKind == ComTypes.TYPEKIND.TKIND_COCLASS) {
                    typeLib.GetTypeInfo(i, out typeInfo);
                    ComTypeClassDesc classDesc = new ComTypeClassDesc(typeInfo, typeLibDesc);
                    typeLibDesc._classes.AddLast(classDesc);
                } else if (typeKind == ComTypes.TYPEKIND.TKIND_ENUM) {
                    typeLib.GetTypeInfo(i, out typeInfo);
                    ComTypeEnumDesc enumDesc = new ComTypeEnumDesc(typeInfo, typeLibDesc);
                    typeLibDesc._enums.Add(enumDesc.TypeName, enumDesc);
                }
            }

            // cached the typelib using the guid as the dictionary key
            lock (_CachedTypeLibDesc) {
                _CachedTypeLibDesc.Add(typeLibAttr.guid, typeLibDesc);
            }

            return typeLibDesc;
        }