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
- CacheMemory.cs
- ViewGenerator.cs
- XmlQueryOutput.cs
- TableChangeProcessor.cs
- codemethodreferenceexpression.cs
- LogWriteRestartAreaState.cs
- AddressHeader.cs
- DataObject.cs
- ProxyHelper.cs
- PointCollection.cs
- PerfCounterSection.cs
- EmptyEnumerator.cs
- ElementNotEnabledException.cs
- MediaPlayer.cs
- SynchronizationValidator.cs
- InnerItemCollectionView.cs
- RecordBuilder.cs
- HWStack.cs
- ParameterCollectionEditorForm.cs
- RectAnimationClockResource.cs
- DebuggerAttributes.cs
- SQLSingle.cs
- TitleStyle.cs
- Timeline.cs
- SqlInfoMessageEvent.cs
- TextOptionsInternal.cs
- SqlClientMetaDataCollectionNames.cs
- HtmlInputReset.cs
- Span.cs
- Model3D.cs
- DynamicDataRouteHandler.cs
- TextBounds.cs
- TreeView.cs
- AdjustableArrowCap.cs
- KnownBoxes.cs
- JobPageOrder.cs
- FilteredReadOnlyMetadataCollection.cs
- MailMessageEventArgs.cs
- SystemNetworkInterface.cs
- ValidationResult.cs
- ZoomPercentageConverter.cs
- _RequestCacheProtocol.cs
- PerformanceCounterCategory.cs
- UpdatePanelControlTrigger.cs
- ClientCredentialsElement.cs
- ConnectionConsumerAttribute.cs
- SoapFormatter.cs
- RuntimeConfigLKG.cs
- TextEditorMouse.cs
- AssemblyAttributes.cs
- BufferedGraphics.cs
- GenericEnumerator.cs
- MessageParameterAttribute.cs
- WindowsFormsEditorServiceHelper.cs
- PageContentAsyncResult.cs
- SessionStateModule.cs
- PolicyUtility.cs
- NotSupportedException.cs
- RegexCapture.cs
- MatrixAnimationUsingPath.cs
- WebResourceAttribute.cs
- Guid.cs
- MouseButtonEventArgs.cs
- ToolStripScrollButton.cs
- XmlSchemaAnnotated.cs
- AnimatedTypeHelpers.cs
- ValidationPropertyAttribute.cs
- DSASignatureDeformatter.cs
- Speller.cs
- XsltSettings.cs
- MapPathBasedVirtualPathProvider.cs
- BufferedGraphicsManager.cs
- InputBindingCollection.cs
- DesignParameter.cs
- FormViewInsertedEventArgs.cs
- SiteOfOriginContainer.cs
- RawKeyboardInputReport.cs
- StateInitializationDesigner.cs
- ErrorWebPart.cs
- TraceFilter.cs
- SecurityToken.cs
- ConfigDefinitionUpdates.cs
- SwitchAttribute.cs
- WebPartCancelEventArgs.cs
- MetadataFile.cs
- AxHost.cs
- MenuAdapter.cs
- NodeFunctions.cs
- basemetadatamappingvisitor.cs
- FlowPosition.cs
- FixedElement.cs
- Font.cs
- SourceFileBuildProvider.cs
- RequiredAttributeAttribute.cs
- LocalizationComments.cs
- CookielessHelper.cs
- GridViewRowCollection.cs
- SqlNode.cs
- ToolStripCodeDomSerializer.cs
- TransactionInformation.cs