Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / Microsoft / Win32 / OAVariantLib.cs / 1305376 / OAVariantLib.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: OAVariantLib ** ** ** Purpose: This class only exists to provide support for ** implenting IDispatch on managed objects. It is ** used to provide OleAut style coercion rules. ** ** ===========================================================*/ namespace Microsoft.Win32 { using System; using System.Diagnostics.Contracts; using System.Reflection; using System.Runtime.CompilerServices; using System.Runtime.Versioning; using CultureInfo = System.Globalization.CultureInfo; internal sealed class OAVariantLib { #region Contants // Constants for VariantChangeType from OleAuto.h public const int NoValueProp = 0x01; public const int AlphaBool = 0x02; public const int NoUserOverride = 0x04; public const int CalendarHijri = 0x08; public const int LocalBool = 0x10; internal static readonly Type [] ClassTypes = { typeof(Empty), typeof(void), typeof(Boolean), typeof(Char), typeof(SByte), typeof(Byte), typeof(Int16), typeof(UInt16), typeof(Int32), typeof(UInt32), typeof(Int64), typeof(UInt64), typeof(Single), typeof(Double), typeof(String), typeof(void), typeof(DateTime), typeof(TimeSpan), typeof(Object), typeof(Decimal), null, // Enums - what do we do here? typeof(Missing), typeof(DBNull), }; // Keep these numbers in [....] w/ the above array. private const int CV_OBJECT=0x12; #endregion #region Private Constructor private OAVariantLib() { } #endregion #region Internal Methods /** * Changes a Variant from one type to another, calling the OLE * Automation VariantChangeTypeEx routine. Note the legal types here are * restricted to the subset of what can be legally found in a VB * Variant and the types that CLR supports explicitly in the * CLR Variant class. */ #if FEATURE_COMINTEROP [System.Security.SecurityCritical] // auto-generated internal static Variant ChangeType(Variant source, Type targetClass, short options, CultureInfo culture) { if (targetClass == null) throw new ArgumentNullException("targetClass"); if (culture == null) throw new ArgumentNullException("culture"); Variant result = new Variant (); ChangeTypeEx(ref result, ref source, culture.LCID, targetClass.TypeHandle.Value, GetCVTypeFromClass(targetClass), options); return result; } #endif #endregion #region Private Helpers private static int GetCVTypeFromClass(Type ctype) { Contract.Requires(ctype != null); #if _DEBUG BCLDebug.Assert(ClassTypes[CV_OBJECT] == typeof(Object), "OAVariantLib::ClassTypes[CV_OBJECT] == Object.class"); #endif int cvtype=-1; for (int i=0; i
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ResourcesChangeInfo.cs
- OutputCacheProviderCollection.cs
- HttpServerUtilityWrapper.cs
- XmlSortKey.cs
- EventHandlersDesigner.cs
- RuntimeArgumentHandle.cs
- ConnectionsZone.cs
- SystemIcmpV6Statistics.cs
- DataBoundControlAdapter.cs
- ViewStateChangedEventArgs.cs
- DBCSCodePageEncoding.cs
- XMLDiffLoader.cs
- BooleanAnimationBase.cs
- DataGridViewIntLinkedList.cs
- SqlNotificationEventArgs.cs
- GatewayDefinition.cs
- TableHeaderCell.cs
- VirtualPath.cs
- HttpCookieCollection.cs
- PersonalizableAttribute.cs
- TreeBuilder.cs
- DataTemplateSelector.cs
- ClientBuildManagerCallback.cs
- TextRangeProviderWrapper.cs
- BStrWrapper.cs
- AmbientLight.cs
- HTMLTextWriter.cs
- WindowsGraphics.cs
- TdsRecordBufferSetter.cs
- TextTreePropertyUndoUnit.cs
- DbConnectionPool.cs
- ArgumentException.cs
- ButtonChrome.cs
- AttributeData.cs
- TdsParserSafeHandles.cs
- InputScopeNameConverter.cs
- ImmutableObjectAttribute.cs
- StackBuilderSink.cs
- RIPEMD160Managed.cs
- XmlWriter.cs
- ALinqExpressionVisitor.cs
- TextPenaltyModule.cs
- FamilyMap.cs
- ExpressionEditorAttribute.cs
- SessionChannels.cs
- HttpResponseInternalWrapper.cs
- SerializationObjectManager.cs
- MetadataArtifactLoaderResource.cs
- ImageListImage.cs
- RegularExpressionValidator.cs
- ColumnWidthChangedEvent.cs
- BamlTreeUpdater.cs
- GeometryCollection.cs
- InvalidEnumArgumentException.cs
- XPathAncestorIterator.cs
- ComponentChangedEvent.cs
- PlanCompiler.cs
- Block.cs
- UnsettableComboBox.cs
- SHA384Managed.cs
- SeverityFilter.cs
- ScriptMethodAttribute.cs
- SafeLibraryHandle.cs
- DbConvert.cs
- MultilineStringConverter.cs
- ResourceDictionary.cs
- _LocalDataStoreMgr.cs
- ListBindableAttribute.cs
- XmlSignificantWhitespace.cs
- safelinkcollection.cs
- HandlerElementCollection.cs
- ZipFileInfoCollection.cs
- TargetException.cs
- SafeMemoryMappedFileHandle.cs
- Utils.cs
- MimeMapping.cs
- PlatformNotSupportedException.cs
- CellCreator.cs
- ToolStripGripRenderEventArgs.cs
- OleDbStruct.cs
- XmlUrlEditor.cs
- BuildProviderAppliesToAttribute.cs
- XmlILAnnotation.cs
- ipaddressinformationcollection.cs
- GridErrorDlg.cs
- MenuItemCollectionEditorDialog.cs
- RegisterResponseInfo.cs
- DataGridViewIntLinkedList.cs
- DocumentGridContextMenu.cs
- ICspAsymmetricAlgorithm.cs
- MsmqTransportElement.cs
- ObjectSpanRewriter.cs
- BrowsableAttribute.cs
- Transactions.cs
- Events.cs
- RSAPKCS1SignatureFormatter.cs
- ObjectStateEntryDbDataRecord.cs
- LinkedResource.cs
- FormsAuthenticationUserCollection.cs
- DummyDataSource.cs