Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Core / CSharp / System / Windows / InterOp / HwndSourceKeyboardInputSite.cs / 1 / HwndSourceKeyboardInputSite.cs
using System; using System.Windows.Input; using System.Collections; using MS.Win32; using System.Windows.Media; using System.Windows.Threading; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; using System.Security ; using MS.Internal.PresentationCore; namespace System.Windows.Interop { internal class HwndSourceKeyboardInputSite : IKeyboardInputSite { public HwndSourceKeyboardInputSite(HwndSource source, IKeyboardInputSink sink) { if(source == null) { throw new ArgumentNullException("source"); } if(sink == null) { throw new ArgumentNullException("sink"); } if(!(sink is UIElement)) { throw new ArgumentException(SR.Get(SRID.KeyboardSinkMustBeAnElement), "sink"); } _source = source; _sink = sink; _sink.KeyboardInputSite = this; _sinkElement = sink as UIElement; } #region IKeyboardInputSite ////// Unregisters a child KeyboardInputSink from this sink. /// ////// Requires unmanaged code permission. /// ////// Critical - calls CriticalUnregister. /// TreatAsSafe: - Interface declaration demands unrestricted UI permission /// [ SecurityCritical,SecurityTreatAsSafe ] void IKeyboardInputSite.Unregister() { CriticalUnregister(); } ////// Unregisters a child KeyboardInputSink from this sink. /// ////// Critical - calls CriticalUnregisterKeyboardInputSink /// [ SecurityCritical ] internal void CriticalUnregister() { if(_source != null && _sink != null) { _source.CriticalUnregisterKeyboardInputSink(this); _sink.KeyboardInputSite = null; } _source = null; _sink = null; } ////// Returns the sink associated with this site (the "child", not /// the "parent" sink that owns the site). There's no way of /// getting from the site to the parent sink. /// IKeyboardInputSink IKeyboardInputSite.Sink { get { return _sink; } } ////// Components call this when they want to move focus ("tab") but /// have nowhere further to tab within their own component. Return /// value is true if the site moved focus, false if the calling /// component still has focus and should wrap around. /// bool IKeyboardInputSite.OnNoMoreTabStops(TraversalRequest request) { bool traversed = false; if(_sinkElement != null) { traversed = _sinkElement.MoveFocus(request); } return traversed; } #endregion IKeyboardInputSite private HwndSource _source; private IKeyboardInputSink _sink; private UIElement _sinkElement; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. using System; using System.Windows.Input; using System.Collections; using MS.Win32; using System.Windows.Media; using System.Windows.Threading; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; using System.Security ; using MS.Internal.PresentationCore; namespace System.Windows.Interop { internal class HwndSourceKeyboardInputSite : IKeyboardInputSite { public HwndSourceKeyboardInputSite(HwndSource source, IKeyboardInputSink sink) { if(source == null) { throw new ArgumentNullException("source"); } if(sink == null) { throw new ArgumentNullException("sink"); } if(!(sink is UIElement)) { throw new ArgumentException(SR.Get(SRID.KeyboardSinkMustBeAnElement), "sink"); } _source = source; _sink = sink; _sink.KeyboardInputSite = this; _sinkElement = sink as UIElement; } #region IKeyboardInputSite ////// Unregisters a child KeyboardInputSink from this sink. /// ////// Requires unmanaged code permission. /// ////// Critical - calls CriticalUnregister. /// TreatAsSafe: - Interface declaration demands unrestricted UI permission /// [ SecurityCritical,SecurityTreatAsSafe ] void IKeyboardInputSite.Unregister() { CriticalUnregister(); } ////// Unregisters a child KeyboardInputSink from this sink. /// ////// Critical - calls CriticalUnregisterKeyboardInputSink /// [ SecurityCritical ] internal void CriticalUnregister() { if(_source != null && _sink != null) { _source.CriticalUnregisterKeyboardInputSink(this); _sink.KeyboardInputSite = null; } _source = null; _sink = null; } ////// Returns the sink associated with this site (the "child", not /// the "parent" sink that owns the site). There's no way of /// getting from the site to the parent sink. /// IKeyboardInputSink IKeyboardInputSite.Sink { get { return _sink; } } ////// Components call this when they want to move focus ("tab") but /// have nowhere further to tab within their own component. Return /// value is true if the site moved focus, false if the calling /// component still has focus and should wrap around. /// bool IKeyboardInputSite.OnNoMoreTabStops(TraversalRequest request) { bool traversed = false; if(_sinkElement != null) { traversed = _sinkElement.MoveFocus(request); } return traversed; } #endregion IKeyboardInputSite private HwndSource _source; private IKeyboardInputSink _sink; private UIElement _sinkElement; } } // 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
- DataDocumentXPathNavigator.cs
- newitemfactory.cs
- EllipseGeometry.cs
- Mappings.cs
- XmlnsDictionary.cs
- UnsafeNativeMethods.cs
- FixedTextView.cs
- PeoplePickerWrapper.cs
- WebServiceHandler.cs
- ConfigurationLoaderException.cs
- FixUpCollection.cs
- CommandField.cs
- WebPartUserCapability.cs
- MimeObjectFactory.cs
- VirtualPath.cs
- AsyncParams.cs
- NativeBuffer.cs
- ItemsPresenter.cs
- OciEnlistContext.cs
- TypeGeneratedEventArgs.cs
- EntityTypeEmitter.cs
- DataGridViewAutoSizeColumnsModeEventArgs.cs
- AuthenticationModuleElement.cs
- DelegateBodyWriter.cs
- HtmlContainerControl.cs
- ThemeInfoAttribute.cs
- ResourceSetExpression.cs
- PersonalizationDictionary.cs
- DataGridViewMethods.cs
- DeadCharTextComposition.cs
- XPathQilFactory.cs
- DefaultBindingPropertyAttribute.cs
- LeaseManager.cs
- IndexExpression.cs
- LambdaCompiler.Lambda.cs
- SmtpLoginAuthenticationModule.cs
- StrokeFIndices.cs
- WebPartUtil.cs
- OleTxTransactionInfo.cs
- SqlParameterizer.cs
- TextDecorations.cs
- ConstraintStruct.cs
- ProcessProtocolHandler.cs
- OverrideMode.cs
- StylusEventArgs.cs
- CompressedStack.cs
- JournalEntry.cs
- MembershipSection.cs
- AppDomainAttributes.cs
- NCryptSafeHandles.cs
- OuterGlowBitmapEffect.cs
- NopReturnReader.cs
- CrossContextChannel.cs
- DataBindEngine.cs
- DoubleLinkListEnumerator.cs
- PlaceHolder.cs
- ApplicationDirectory.cs
- PersonalizationState.cs
- DataViewSettingCollection.cs
- WebPartConnectionsEventArgs.cs
- MSAAEventDispatcher.cs
- ApplicationBuildProvider.cs
- ResourceReferenceKeyNotFoundException.cs
- CompressionTransform.cs
- MailBnfHelper.cs
- ObservableDictionary.cs
- QueryAsyncResult.cs
- RIPEMD160.cs
- FontStretchConverter.cs
- BaseProcessor.cs
- XhtmlMobileTextWriter.cs
- EditorPartChrome.cs
- ClientRolePrincipal.cs
- CodeMethodReturnStatement.cs
- EventDescriptor.cs
- Base64WriteStateInfo.cs
- EntityDescriptor.cs
- MailDefinition.cs
- HostingEnvironmentSection.cs
- propertytag.cs
- RecognizerStateChangedEventArgs.cs
- AutomationTextAttribute.cs
- ConnectionPointCookie.cs
- HttpsHostedTransportConfiguration.cs
- DTCTransactionManager.cs
- TableLayoutColumnStyleCollection.cs
- ArrayHelper.cs
- shaperfactory.cs
- TabItemAutomationPeer.cs
- ChangeConflicts.cs
- BaseDataList.cs
- RewritingProcessor.cs
- Renderer.cs
- TemplateField.cs
- DateTimeSerializationSection.cs
- HandlerMappingMemo.cs
- DeflateStream.cs
- RightsManagementManager.cs
- StylusPointPropertyId.cs
- httpstaticobjectscollection.cs