Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / Microsoft / Win32 / OAVariantLib.cs / 1 / 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.Reflection; using System.Runtime.CompilerServices; using CultureInfo = System.Globalization.CultureInfo; using Assert = System.Diagnostics.Assert; 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), }; // Same hack hack hack - Keep these numbers in sync 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. */ 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, source, culture.LCID, GetCVTypeFromClass(targetClass), options); return result; } #endregion #region Private Helpers private static int GetCVTypeFromClass(Type ctype) { #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
- GridViewAutomationPeer.cs
- CompatibleComparer.cs
- EventMap.cs
- TreeNodeMouseHoverEvent.cs
- Container.cs
- IxmlLineInfo.cs
- XmlCharCheckingWriter.cs
- WebBrowserNavigatingEventHandler.cs
- IDReferencePropertyAttribute.cs
- ContextMenuStrip.cs
- StatusBarDrawItemEvent.cs
- TableRow.cs
- TokenFactoryFactory.cs
- TextRangeEditLists.cs
- unsafeIndexingFilterStream.cs
- ScriptDescriptor.cs
- ObjectDataSourceView.cs
- SubclassTypeValidator.cs
- XmlReflectionImporter.cs
- RegexGroup.cs
- HTTPNotFoundHandler.cs
- DrawingAttributes.cs
- QilSortKey.cs
- EventListener.cs
- SystemIPInterfaceStatistics.cs
- TimelineClockCollection.cs
- Interop.cs
- IsolatedStorageException.cs
- GCHandleCookieTable.cs
- DataGridSortCommandEventArgs.cs
- MediaEntryAttribute.cs
- KnownBoxes.cs
- CorrelationTokenTypeConvertor.cs
- WebScriptEnablingBehavior.cs
- BindingWorker.cs
- StackBuilderSink.cs
- CompModSwitches.cs
- StickyNoteHelper.cs
- DataGridViewDataErrorEventArgs.cs
- PathParser.cs
- DataObjectPastingEventArgs.cs
- NamespaceTable.cs
- ComponentDispatcher.cs
- MediaEntryAttribute.cs
- ResourceContainer.cs
- WebPartDeleteVerb.cs
- AppDomainCompilerProxy.cs
- TimeSpanSecondsConverter.cs
- SeekStoryboard.cs
- BindingList.cs
- PeerPresenceInfo.cs
- GeneralTransform.cs
- BitStack.cs
- MutexSecurity.cs
- SmtpNegotiateAuthenticationModule.cs
- NativeMethods.cs
- AdapterUtil.cs
- DesignerAutoFormat.cs
- XmlNodeChangedEventManager.cs
- ValueHandle.cs
- ServiceContractListItem.cs
- XamlLoadErrorInfo.cs
- CommandField.cs
- ListParagraph.cs
- DefaultPerformanceCounters.cs
- SchemaComplexType.cs
- RefExpr.cs
- RemoteAsymmetricSignatureFormatter.cs
- ToolboxComponentsCreatedEventArgs.cs
- DocumentApplicationJournalEntry.cs
- Style.cs
- SystemUnicastIPAddressInformation.cs
- Event.cs
- MemoryRecordBuffer.cs
- DataGridAutoGeneratingColumnEventArgs.cs
- WindowVisualStateTracker.cs
- ClientRequest.cs
- ExpressionVisitorHelpers.cs
- TTSEngineProxy.cs
- EmbeddedMailObject.cs
- ConnectionsZone.cs
- EntityDesignerUtils.cs
- ConditionalAttribute.cs
- FrameworkContextData.cs
- MemoryStream.cs
- OptimizedTemplateContentHelper.cs
- ByeOperationAsyncResult.cs
- Size3D.cs
- PickBranch.cs
- EntityFrameworkVersions.cs
- RawStylusInputCustomDataList.cs
- XmlBinaryReader.cs
- Viewport2DVisual3D.cs
- XamlBrushSerializer.cs
- PackUriHelper.cs
- ManagementScope.cs
- TimelineClockCollection.cs
- PhysicalOps.cs
- ExpressionQuoter.cs
- TextPointer.cs