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
- bindurihelper.cs
- ReferenceConverter.cs
- NonSerializedAttribute.cs
- MostlySingletonList.cs
- UTF32Encoding.cs
- Window.cs
- DelegatingChannelListener.cs
- XmlCharacterData.cs
- Atom10FeedFormatter.cs
- FixedSOMTableRow.cs
- AssociationSetEnd.cs
- VariantWrapper.cs
- WCFServiceClientProxyGenerator.cs
- FormatException.cs
- ListenerElementsCollection.cs
- TableColumnCollection.cs
- SectionXmlInfo.cs
- AssemblyUtil.cs
- Stack.cs
- CTreeGenerator.cs
- NotSupportedException.cs
- RawKeyboardInputReport.cs
- MouseWheelEventArgs.cs
- ContainerSelectorGlyph.cs
- UIElement3DAutomationPeer.cs
- ExceptionAggregator.cs
- MouseGestureConverter.cs
- MailMessageEventArgs.cs
- SynchronizedInputPattern.cs
- DrawingGroup.cs
- ColumnClickEvent.cs
- ServiceModelReg.cs
- SqlProcedureAttribute.cs
- XmlAttributes.cs
- MasterPageParser.cs
- DataObjectMethodAttribute.cs
- QueryStringParameter.cs
- TransmissionStrategy.cs
- WmlLinkAdapter.cs
- XXXInfos.cs
- BooleanExpr.cs
- TraceHandler.cs
- Rule.cs
- ValueQuery.cs
- CompensableActivity.cs
- PatternMatcher.cs
- HtmlControlPersistable.cs
- QilPatternVisitor.cs
- Dynamic.cs
- PersonalizableTypeEntry.cs
- RotateTransform3D.cs
- sitestring.cs
- coordinatorscratchpad.cs
- WindowsEditBox.cs
- SmtpMail.cs
- WSSecurityOneDotOneSendSecurityHeader.cs
- ByteAnimation.cs
- ExpressionCopier.cs
- EntityDataSourceContextDisposingEventArgs.cs
- MembershipSection.cs
- SelectionItemPattern.cs
- validation.cs
- EnvelopedSignatureTransform.cs
- LinqDataSourceUpdateEventArgs.cs
- Aes.cs
- TCEAdapterGenerator.cs
- MembershipUser.cs
- SqlCommand.cs
- WindowsPrincipal.cs
- TableLayoutSettings.cs
- StatusBarItem.cs
- MutexSecurity.cs
- SequenceDesigner.cs
- RectangleHotSpot.cs
- SurrogateSelector.cs
- Utils.cs
- DataGridViewCellStyle.cs
- PathSegmentCollection.cs
- WorkflowApplicationUnhandledExceptionEventArgs.cs
- Label.cs
- OrCondition.cs
- DockPanel.cs
- AmbientProperties.cs
- Globals.cs
- ImageMapEventArgs.cs
- Visual3D.cs
- RequiredFieldValidator.cs
- ListViewInsertionMark.cs
- XmlSerializationReader.cs
- ListControl.cs
- LogRestartAreaEnumerator.cs
- XamlToRtfParser.cs
- AnimatedTypeHelpers.cs
- X509Utils.cs
- DataSourceXmlAttributeAttribute.cs
- HtmlElementCollection.cs
- SystemFonts.cs
- XmlSchemaAttributeGroupRef.cs
- securitycriticaldata.cs
- Matrix3DConverter.cs