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
- ResourcesChangeInfo.cs
- BitmapEffectGroup.cs
- ToolboxDataAttribute.cs
- PropertyEmitterBase.cs
- SmiEventSink_Default.cs
- PolicyStatement.cs
- VisualStyleInformation.cs
- ExpressionEditorSheet.cs
- SystemBrushes.cs
- AttachedAnnotation.cs
- DSACryptoServiceProvider.cs
- Selector.cs
- NativeWindow.cs
- StyleReferenceConverter.cs
- XmlSchemaCollection.cs
- HostUtils.cs
- Listbox.cs
- Tablet.cs
- WebBrowserContainer.cs
- StatusBarPanelClickEvent.cs
- HandledEventArgs.cs
- DecoderReplacementFallback.cs
- SubtreeProcessor.cs
- SiteMap.cs
- WebFaultClientMessageInspector.cs
- FormsIdentity.cs
- LocationSectionRecord.cs
- MediaPlayerState.cs
- TemplateBamlRecordReader.cs
- InheritanceService.cs
- WaitForChangedResult.cs
- CodeDirectoryCompiler.cs
- CodeTypeParameterCollection.cs
- TextTrailingCharacterEllipsis.cs
- QueueException.cs
- CodeIterationStatement.cs
- ArglessEventHandlerProxy.cs
- StorageInfo.cs
- XdrBuilder.cs
- CompilationSection.cs
- MergeEnumerator.cs
- CodeDomComponentSerializationService.cs
- BamlResourceSerializer.cs
- LinkUtilities.cs
- DataControlFieldCollection.cs
- HyperlinkAutomationPeer.cs
- AggregationMinMaxHelpers.cs
- ScrollViewer.cs
- PropertyTab.cs
- FunctionQuery.cs
- AssemblyNameUtility.cs
- ProtocolsSection.cs
- Clause.cs
- Vector3DAnimationUsingKeyFrames.cs
- Transform3D.cs
- SAPIEngineTypes.cs
- DataListItem.cs
- AuthorizationContext.cs
- TypedTableBase.cs
- StreamAsIStream.cs
- ControlCachePolicy.cs
- Util.cs
- XslAstAnalyzer.cs
- GlyphRunDrawing.cs
- CryptoConfig.cs
- SQLInt64Storage.cs
- Point.cs
- TreeNodeMouseHoverEvent.cs
- versioninfo.cs
- RandomNumberGenerator.cs
- FrameworkContentElementAutomationPeer.cs
- PixelFormats.cs
- BamlBinaryReader.cs
- FormsAuthentication.cs
- TaskFileService.cs
- GZipStream.cs
- SecurityKeyEntropyMode.cs
- DataGridLengthConverter.cs
- RouteParameter.cs
- MappingSource.cs
- MediaTimeline.cs
- DisplayNameAttribute.cs
- PolyQuadraticBezierSegment.cs
- PtsPage.cs
- DataServiceContext.cs
- InvariantComparer.cs
- OracleEncoding.cs
- CollectionConverter.cs
- PlainXmlSerializer.cs
- XmlCodeExporter.cs
- Triplet.cs
- Substitution.cs
- ClientConfigurationHost.cs
- AddIn.cs
- WebPartManager.cs
- BuildResult.cs
- MsmqHostedTransportConfiguration.cs
- XmlSchemaSimpleTypeList.cs
- BufferBuilder.cs
- InstanceValue.cs