Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / InterOp / HwndSourceKeyboardInputSite.cs / 1407647 / 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 { ////// Critical: satisfies a LinkDemand for 'UIPermissionAttribute' on method /// 'System.Windows.Interop.IKeyboardInputSink.set_KeyboardInputSite(System.Windows.Interop.IKeyboardInputSite)'. /// [SecurityCritical] 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 { ////// Critical: satisfies a LinkDemand for 'UIPermissionAttribute' on method /// 'System.Windows.Interop.IKeyboardInputSink.set_KeyboardInputSite(System.Windows.Interop.IKeyboardInputSite)'. /// [SecurityCritical] 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
- Tablet.cs
- TraceSection.cs
- XPathNode.cs
- Formatter.cs
- PropertyPushdownHelper.cs
- BinaryFormatter.cs
- FontFamily.cs
- FontStretch.cs
- IfJoinedCondition.cs
- ExpandCollapsePattern.cs
- DataTransferEventArgs.cs
- TableRowGroup.cs
- BuildProviderCollection.cs
- Padding.cs
- Win32PrintDialog.cs
- PointCollectionConverter.cs
- UnmanagedMarshal.cs
- MsmqActivation.cs
- BooleanProjectedSlot.cs
- CaseCqlBlock.cs
- TextEditorParagraphs.cs
- ReaderWriterLockWrapper.cs
- SchemaType.cs
- OleDbFactory.cs
- FlowchartDesignerCommands.cs
- Currency.cs
- NamespaceMapping.cs
- FormsAuthenticationConfiguration.cs
- UInt16.cs
- cache.cs
- CommandBindingCollection.cs
- ModelPropertyImpl.cs
- BorderGapMaskConverter.cs
- DetailsViewUpdateEventArgs.cs
- FlowLayoutPanelDesigner.cs
- DeclaredTypeValidator.cs
- SiteMapProvider.cs
- DataColumnMapping.cs
- WebPartTransformerAttribute.cs
- PropertyToken.cs
- PropertyBuilder.cs
- Thickness.cs
- milrender.cs
- FolderBrowserDialog.cs
- NetworkInformationException.cs
- SwitchAttribute.cs
- CachedCompositeFamily.cs
- SignatureDescription.cs
- ShaderRenderModeValidation.cs
- ConfigXmlSignificantWhitespace.cs
- Graphics.cs
- SecurityRuntime.cs
- ExtensionQuery.cs
- TableFieldsEditor.cs
- ContentPlaceHolder.cs
- ScrollProperties.cs
- ListViewDataItem.cs
- ObjectSet.cs
- EncryptedHeader.cs
- TextLine.cs
- HtmlInputControl.cs
- uribuilder.cs
- OleDbParameterCollection.cs
- Monitor.cs
- VScrollBar.cs
- IgnorePropertiesAttribute.cs
- HttpProxyTransportBindingElement.cs
- DnsPermission.cs
- ReferenceEqualityComparer.cs
- DbgCompiler.cs
- FamilyCollection.cs
- Composition.cs
- EditorZoneBase.cs
- DataGridColumnReorderingEventArgs.cs
- ImageSource.cs
- DoubleAnimationBase.cs
- SecurityTokenSerializer.cs
- NativeMethods.cs
- TextDocumentView.cs
- AppSettingsExpressionBuilder.cs
- RelationshipEndMember.cs
- ListInitExpression.cs
- UndoUnit.cs
- Calendar.cs
- BitArray.cs
- ClientOptions.cs
- ConfigXmlWhitespace.cs
- StrokeNodeOperations.cs
- CommandHelpers.cs
- XhtmlConformanceSection.cs
- DataObjectPastingEventArgs.cs
- NativeMethods.cs
- StyleTypedPropertyAttribute.cs
- ReadOnlyDataSource.cs
- BooleanConverter.cs
- MonthCalendarDesigner.cs
- CrossSiteScriptingValidation.cs
- SecurityException.cs
- Canvas.cs
- OdbcTransaction.cs