Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / SizeChangedInfo.cs / 1 / SizeChangedInfo.cs
using System; namespace System.Windows { ////// The SizeChangedinfo class is used as a parameter to OnSizeRenderChanged. /// public class SizeChangedInfo { ////// Initializes a new instance of the SizeChangedinfo class. /// /// /// The element which size is changing. /// /// /// The size of the object before update. New size is element.RenderSize /// /// /// The flag indicating that width component of the size changed. Note that due to double math /// effects, the it may be (previousSize.Width != newSize.Width) and widthChanged = true. /// This may happen in layout when sizes of objects are fluctuating because of a precision "jitter" of /// the input parameters, but the overall scene is considered to be "the same" so no visible changes /// will be detected. Typically, the handler of SizeChangedEvent should check this bit to avoid /// invalidation of layout if the dimension didn't change. /// /// /// The flag indicating that height component of the size changed. Note that due to double math /// effects, the it may be (previousSize.Height != newSize.Height) and heightChanged = true. /// This may happen in layout when sizes of objects are fluctuating because of a precision "jitter" of /// the input parameters, but the overall scene is considered to be "the same" so no visible changes /// will be detected. Typically, the handler of SizeChangedEvent should check this bit to avoid /// invalidation of layout if the dimension didn't change. /// public SizeChangedInfo(UIElement element, Size previousSize, bool widthChanged, bool heightChanged) { _element = element; _previousSize = previousSize; _widthChanged = widthChanged; _heightChanged = heightChanged; } ////// Read-only access to the previous Size /// public Size PreviousSize { get { return _previousSize; } } ////// Read-only access to the new Size /// public Size NewSize { get { return _element.RenderSize; } } ////// Read-only access to the flag indicating that Width component of the size changed. /// Note that due to double math /// effects, the it may be (previousSize.Width != newSize.Width) and widthChanged = true. /// This may happen in layout when sizes of objects are fluctuating because of a precision "jitter" of /// the input parameters, but the overall scene is considered to be "the same" so no visible changes /// will be detected. Typically, the handler of SizeChangedEvent should check this bit to avoid /// invalidation of layout if the dimension didn't change. /// public bool WidthChanged { get { return _widthChanged; } } ////// Read-only access to the flag indicating that Height component of the size changed. /// Note that due to double math /// effects, the it may be (previousSize.Height != newSize.Height) and heightChanged = true. /// This may happen in layout when sizes of objects are fluctuating because of a precision "jitter" of /// the input parameters, but the overall scene is considered to be "the same" so no visible changes /// will be detected. Typically, the handler of SizeChangedEvent should check this bit to avoid /// invalidation of layout if the dimension didn't change. /// public bool HeightChanged { get { return _heightChanged; } } //this method is used by UIElement to "accumulate" several cosequitive layout updates //into the single args object cahced on UIElement. Since the SizeChanged is deferred event, //there could be several size changes before it will actually fire. internal void Update(bool widthChanged, bool heightChanged) { _widthChanged = _widthChanged | widthChanged; _heightChanged = _heightChanged | heightChanged; } internal UIElement Element { get { return _element; } } private UIElement _element; private Size _previousSize; private bool _widthChanged; private bool _heightChanged; internal SizeChangedInfo Next; } } // 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
- SortedDictionary.cs
- KeyEventArgs.cs
- Size.cs
- KoreanLunisolarCalendar.cs
- XmlUTF8TextWriter.cs
- Number.cs
- listitem.cs
- BuildProviderAppliesToAttribute.cs
- JsonXmlDataContract.cs
- OdbcDataAdapter.cs
- StringKeyFrameCollection.cs
- TokenBasedSet.cs
- Helpers.cs
- CacheDependency.cs
- SourceLineInfo.cs
- XmlHierarchyData.cs
- PieceDirectory.cs
- NetCodeGroup.cs
- DynamicVirtualDiscoSearcher.cs
- NoClickablePointException.cs
- DataSetFieldSchema.cs
- AudioStateChangedEventArgs.cs
- ParserExtension.cs
- BasePattern.cs
- Iis7Helper.cs
- XmlArrayAttribute.cs
- CharConverter.cs
- SctClaimDictionary.cs
- EventLogInformation.cs
- ClassImporter.cs
- EntitySqlQueryBuilder.cs
- SoapSchemaExporter.cs
- FontStyleConverter.cs
- HtmlShim.cs
- EncryptedReference.cs
- HwndSourceKeyboardInputSite.cs
- RSAOAEPKeyExchangeDeformatter.cs
- SendingRequestEventArgs.cs
- FlowDocumentPage.cs
- ColumnPropertiesGroup.cs
- ResizeGrip.cs
- EntityViewGenerationAttribute.cs
- TypefaceMap.cs
- ISO2022Encoding.cs
- MarginsConverter.cs
- FlowPosition.cs
- RemoteWebConfigurationHost.cs
- RoleManagerEventArgs.cs
- IntSecurity.cs
- Touch.cs
- StatusBarAutomationPeer.cs
- EventLogEntryCollection.cs
- CodeSnippetCompileUnit.cs
- HttpDictionary.cs
- TypeReference.cs
- WebBrowserPermission.cs
- CatalogPart.cs
- DataColumnSelectionConverter.cs
- TextTreeExtractElementUndoUnit.cs
- ThreadAttributes.cs
- Boolean.cs
- ButtonRenderer.cs
- CultureSpecificStringDictionary.cs
- HandleDictionary.cs
- NamespaceCollection.cs
- ComponentResourceManager.cs
- BoundPropertyEntry.cs
- BamlVersionHeader.cs
- ObjectConverter.cs
- CapabilitiesUse.cs
- BridgeDataRecord.cs
- StandardToolWindows.cs
- EntityCommandCompilationException.cs
- SystemInfo.cs
- WebPartDesigner.cs
- DesignConnectionCollection.cs
- XmlSchemaInferenceException.cs
- SmiEventSink_DeferedProcessing.cs
- Condition.cs
- EntityModelBuildProvider.cs
- SmtpFailedRecipientException.cs
- WebPartConnectVerb.cs
- DbParameterHelper.cs
- MediaTimeline.cs
- TextElementEnumerator.cs
- coordinatorfactory.cs
- DataGridColumnHeaderItemAutomationPeer.cs
- TrailingSpaceComparer.cs
- CompModSwitches.cs
- FileSystemWatcher.cs
- StrokeSerializer.cs
- ProxyWebPartManager.cs
- DbgUtil.cs
- PropertyEmitter.cs
- NavigationEventArgs.cs
- ConfigXmlSignificantWhitespace.cs
- TreeNodeClickEventArgs.cs
- ZipArchive.cs
- Page.cs
- TextDecorationLocationValidation.cs