Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / Input / TextServicesCompartment.cs / 1 / TextServicesCompartment.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: Manages Text Services Compartment. // // History: // 07/30/2003 : [....] - Ported from .net tree. // //--------------------------------------------------------------------------- using System; using System.Runtime.InteropServices; using System.Windows.Threading; using System.Security; using System.Security.Permissions; using System.Diagnostics; using System.Collections; using MS.Utility; using MS.Win32; using MS.Internal; namespace System.Windows.Input { //----------------------------------------------------- // // TextServicesCompartment class // //----------------------------------------------------- internal class TextServicesCompartment { //------------------------------------------------------ // // Constructors // //----------------------------------------------------- ////// Critical - directly calls unmanaged code based on guid /// [SecurityCritical] internal TextServicesCompartment(Guid guid, UnsafeNativeMethods.ITfCompartmentMgr compartmentmgr) { _guid = guid; _compartmentmgr = new SecurityCriticalData(compartmentmgr); _cookie = UnsafeNativeMethods.TF_INVALID_COOKIE; } //------------------------------------------------------ // // Public Methods // //------------------------------------------------------ #region Public Methods #endregion Public Methods //----------------------------------------------------- // // Public Operators // //------------------------------------------------------ //----------------------------------------------------- // // Public Properties // //----------------------------------------------------- //----------------------------------------------------- // // Public Events // //------------------------------------------------------ //----------------------------------------------------- // // Protected Methods // //------------------------------------------------------ //------------------------------------------------------ // // Internal Methods // //----------------------------------------------------- #region Internal Methods /// /// Advise the notify sink of the compartment update. /// ////// Critical - wires up multiple unmanaged objects together /// [SecurityCritical] internal void AdviseNotifySink(UnsafeNativeMethods.ITfCompartmentEventSink sink) { Debug.Assert(_cookie == UnsafeNativeMethods.TF_INVALID_COOKIE, "cookie is already set."); UnsafeNativeMethods.ITfCompartment compartment = GetITfCompartment(); if (compartment == null) return; UnsafeNativeMethods.ITfSource source = compartment as UnsafeNativeMethods.ITfSource; // workaround because I can't pass a ref to a readonly constant Guid guid = UnsafeNativeMethods.IID_ITfCompartmentEventSink; source.AdviseSink(ref guid, sink, out _cookie); Marshal.ReleaseComObject(compartment); Marshal.ReleaseComObject(source); } ////// Unadvise the notify sink of the compartment update. /// ////// Critical - wires up multiple unmanaged objects together /// [SecurityCritical] internal void UnadviseNotifySink() { Debug.Assert(_cookie != UnsafeNativeMethods.TF_INVALID_COOKIE, "cookie is not set."); UnsafeNativeMethods.ITfCompartment compartment = GetITfCompartment(); if (compartment == null) return; UnsafeNativeMethods.ITfSource source = compartment as UnsafeNativeMethods.ITfSource; source.UnadviseSink(_cookie); _cookie = UnsafeNativeMethods.TF_INVALID_COOKIE; Marshal.ReleaseComObject(compartment); Marshal.ReleaseComObject(source); } ////// Retrieve ITfCompartment /// ////// Critical - returns critical resource /// [SecurityCritical] internal UnsafeNativeMethods.ITfCompartment GetITfCompartment() { UnsafeNativeMethods.ITfCompartment itfcompartment; _compartmentmgr.Value.GetCompartment(ref _guid, out itfcompartment); return itfcompartment; } #endregion Internal methods //------------------------------------------------------ // // Internal Properties // //----------------------------------------------------- #region Internal Properties ////// Cast the compartment variant to bool. /// internal bool BooleanValue { get { object obj = Value; if (obj == null) return false; if ((int)obj != 0) return true; return false; } set { Value = value ? 1 : 0; } } ////// Cast the compartment variant to int. /// internal int IntValue { get { object obj = Value; if (obj == null) return 0; return (int)obj; } set { Value = value; } } ////// Get the compartment variant. /// ////// Critical - access unmanaged code /// TreatAsSafe - returns "safe" variant based value from the store /// internal object Value { [SecurityCritical, SecurityTreatAsSafe] get { UnsafeNativeMethods.ITfCompartment compartment = GetITfCompartment(); if (compartment == null) return null; object obj; compartment.GetValue(out obj); Marshal.ReleaseComObject(compartment); return obj; } [SecurityCritical, SecurityTreatAsSafe] set { UnsafeNativeMethods.ITfCompartment compartment = GetITfCompartment(); if (compartment == null) return; compartment.SetValue(0 /* clientid */, ref value); Marshal.ReleaseComObject(compartment); } } #endregion Internal Properties //----------------------------------------------------- // // Private Methods // //----------------------------------------------------- //------------------------------------------------------ // // Private Fields // //----------------------------------------------------- #region Private Fields ////// Critical: UnsafeNativeMethods.ITfCompartmentMgr has methods with SuppressUnmanagedCodeSecurity. /// private readonly SecurityCriticalData_compartmentmgr; private Guid _guid; private int _cookie; #endregion Private Fields } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ControlEvent.cs
- DataListItem.cs
- ColumnMapTranslator.cs
- ChangePassword.cs
- StylusPointDescription.cs
- Vector3DKeyFrameCollection.cs
- ChangePassword.cs
- MessageUtil.cs
- HasCopySemanticsAttribute.cs
- Subset.cs
- TextFindEngine.cs
- HttpListenerResponse.cs
- InheritablePropertyChangeInfo.cs
- KeyInfo.cs
- BitmapEffectGroup.cs
- PagePropertiesChangingEventArgs.cs
- HtmlInputControl.cs
- TypedAsyncResult.cs
- ConfigXmlDocument.cs
- EventLogPermissionEntry.cs
- DataObjectAttribute.cs
- NameSpaceEvent.cs
- XmlTypeMapping.cs
- BitArray.cs
- IIS7WorkerRequest.cs
- BitmapSizeOptions.cs
- GorillaCodec.cs
- SettingsAttributeDictionary.cs
- XmlObjectSerializerWriteContextComplex.cs
- TypeReference.cs
- ActivityMarkupSerializationProvider.cs
- Avt.cs
- _DomainName.cs
- ParserContext.cs
- HighlightVisual.cs
- ScaleTransform.cs
- JsonDataContract.cs
- UserMapPath.cs
- ReadingWritingEntityEventArgs.cs
- KeyValuePairs.cs
- ContentControl.cs
- DataGridPagerStyle.cs
- IIS7WorkerRequest.cs
- FrameworkObject.cs
- WebMessageEncodingBindingElement.cs
- HtmlImage.cs
- DesigntimeLicenseContext.cs
- EnumerableRowCollection.cs
- DataGridViewToolTip.cs
- _Win32.cs
- C14NUtil.cs
- DeclaredTypeValidator.cs
- EventHandlingScope.cs
- RelatedView.cs
- NotImplementedException.cs
- CacheEntry.cs
- AuditLogLocation.cs
- ProcessModuleCollection.cs
- AppDomainManager.cs
- FrameSecurityDescriptor.cs
- metadatamappinghashervisitor.hashsourcebuilder.cs
- CodeMemberMethod.cs
- MailBnfHelper.cs
- SessionEndingCancelEventArgs.cs
- DesignOnlyAttribute.cs
- SHA1Managed.cs
- SqlPersonalizationProvider.cs
- SqlRetyper.cs
- RootNamespaceAttribute.cs
- SiteMapNodeCollection.cs
- ListViewSelectEventArgs.cs
- OdbcCommandBuilder.cs
- CapabilitiesState.cs
- BaseTemplateParser.cs
- GlobalizationSection.cs
- Int32Storage.cs
- UrlRoutingModule.cs
- OdbcConnectionHandle.cs
- contentDescriptor.cs
- TreeNodeEventArgs.cs
- FontStyles.cs
- DataPagerField.cs
- SharedStatics.cs
- DataGridViewRowCancelEventArgs.cs
- RijndaelManagedTransform.cs
- LogLogRecordEnumerator.cs
- BCLDebug.cs
- RewritingPass.cs
- RelationshipEntry.cs
- ClientSponsor.cs
- DispatcherHookEventArgs.cs
- FillErrorEventArgs.cs
- DebuggerAttributes.cs
- CornerRadius.cs
- SystemGatewayIPAddressInformation.cs
- ItemChangedEventArgs.cs
- RawContentTypeMapper.cs
- RegistrySecurity.cs
- PersonalizationProvider.cs
- ComplexObject.cs