Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / UIAutomation / UIAutomationClient / MS / Internal / Automation / WindowHideOrCloseTracker.cs / 1305600 / WindowHideOrCloseTracker.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: Class used to track new UI appearing and make sure any events // are propogated to that new UI. // // History: // 11/20/2003 : Micw Created // //--------------------------------------------------------------------------- using System; using System.Text; using System.Windows.Automation; using MS.Win32; using System.Diagnostics; namespace MS.Internal.Automation { // WindowHideOrCloseTracker - Class used to track new UI appearing and make sure any events // are propogated to that new UI. internal delegate void WindowHideOrCloseHandler( IntPtr hwnd, AutomationElement rawEl, int[] runtimeId ); // Class used to track new UI appearing and make sure any events // are propogated to that new UI. internal class WindowHideOrCloseTracker : WinEventWrap { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors internal WindowHideOrCloseTracker(WindowHideOrCloseHandler newUIHandler) : base(new int[] {NativeMethods.EVENT_OBJECT_DESTROY, NativeMethods.EVENT_OBJECT_HIDE}) { AddCallback(newUIHandler); } #endregion Constructors //------------------------------------------------------ // // Internal Methods // //----------------------------------------------------- #region Internal Methods internal override void WinEventProc(int eventId, IntPtr hwnd, int idObject, int idChild, uint eventTime) { // ignore any event not pertaining directly to the window if (idObject != UnsafeNativeMethods.OBJID_WINDOW) return; // Ignore if this is a bogus hwnd (shouldn't happen) if (hwnd == IntPtr.Zero) return; NativeMethods.HWND nativeHwnd = NativeMethods.HWND.Cast( hwnd ); // Purposefully including windows that have been destroyed (e.g. IsWindow will return // false here for EVENT_OBJECT_DESTROY) because we need that notification. if (eventId == NativeMethods.EVENT_OBJECT_HIDE && !SafeNativeMethods.IsWindow( nativeHwnd )) { return; } int[] runtimeId; AutomationElement rawEl; if (eventId == NativeMethods.EVENT_OBJECT_DESTROY) { // If the window has been destroyed just report the RuntimeId with the event. runtimeId = HwndProxyElementProvider.MakeRuntimeId( nativeHwnd ); rawEl = null; } else { // If the window is just being hidden then can create (and return as event src) a real element rawEl = AutomationElement.FromHandle( hwnd ); runtimeId = rawEl.GetRuntimeId(); } // Do the notify. Note that this handler is used to notify client-side UIAutomation providers of windows // being destroyed or hidden. The delegate called here is itself protected by a lock. This delegate may // call out to proxies but also calls ClientEventManager.RaiseEventInThisClientOnly which properly // queues the actual callout to client code. object[] handlers = GetHandlers(); Debug.Assert(handlers.Length <= 1, "handlers.Length"); if ( handlers.Length > 0 ) ( (WindowHideOrCloseHandler)handlers [0] )( hwnd, rawEl, runtimeId ); } #endregion Internal Methods //------------------------------------------------------ // // Private Fields // //------------------------------------------------------ #region Private Fields // no state #endregion Private Fields } } // 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
- X509WindowsSecurityToken.cs
- ColumnResult.cs
- _BasicClient.cs
- ExclusiveCanonicalizationTransform.cs
- ObfuscateAssemblyAttribute.cs
- DataGridColumnHeadersPresenterAutomationPeer.cs
- CodeAttributeDeclarationCollection.cs
- BmpBitmapDecoder.cs
- CompositeActivityTypeDescriptor.cs
- LogLogRecordHeader.cs
- NeutralResourcesLanguageAttribute.cs
- TextProviderWrapper.cs
- RichTextBoxContextMenu.cs
- StatusBar.cs
- SoapMessage.cs
- WebPartTransformerAttribute.cs
- ScalarConstant.cs
- AppliedDeviceFiltersDialog.cs
- MexHttpBindingCollectionElement.cs
- MarshalDirectiveException.cs
- HashCodeCombiner.cs
- ConfigXmlElement.cs
- XMLDiffLoader.cs
- LineMetrics.cs
- RefreshPropertiesAttribute.cs
- RelatedEnd.cs
- SmiContextFactory.cs
- _UncName.cs
- MainMenu.cs
- XslAst.cs
- BitmapEffectRenderDataResource.cs
- Wizard.cs
- XmlSchemaDocumentation.cs
- RuntimeArgumentHandle.cs
- AsyncOperationManager.cs
- XmlCharacterData.cs
- ComponentEditorForm.cs
- MediaTimeline.cs
- SoapExtensionTypeElement.cs
- CheckBoxFlatAdapter.cs
- ListViewSortEventArgs.cs
- SignatureResourcePool.cs
- DirectoryInfo.cs
- PageParser.cs
- TextRangeEditLists.cs
- MexBindingBindingCollectionElement.cs
- RecordConverter.cs
- MarginCollapsingState.cs
- EllipseGeometry.cs
- ValueTypeIndexerReference.cs
- UnknownWrapper.cs
- SignatureDescription.cs
- XmlAnyElementAttribute.cs
- XamlReader.cs
- PriorityRange.cs
- AliasExpr.cs
- MarkedHighlightComponent.cs
- Aggregates.cs
- BulletChrome.cs
- WebResourceUtil.cs
- EntityDataSourceWrapper.cs
- MobileContainerDesigner.cs
- SplineKeyFrames.cs
- XmlHierarchyData.cs
- BatchWriter.cs
- BCryptNative.cs
- LinkedResource.cs
- TreeViewCancelEvent.cs
- PathGradientBrush.cs
- Compiler.cs
- IgnorePropertiesAttribute.cs
- UiaCoreApi.cs
- DescendantOverDescendantQuery.cs
- SevenBitStream.cs
- PageBreakRecord.cs
- SqlParameter.cs
- DashStyle.cs
- FontClient.cs
- RequestCacheValidator.cs
- Delegate.cs
- AttributeConverter.cs
- ListViewGroupConverter.cs
- Delegate.cs
- DataServiceRequestOfT.cs
- ExpressionHelper.cs
- _Win32.cs
- SettingsPropertyWrongTypeException.cs
- CompositeActivityMarkupSerializer.cs
- ExpandCollapseProviderWrapper.cs
- SystemEvents.cs
- TypeToStringValueConverter.cs
- FunctionParameter.cs
- XPathAncestorIterator.cs
- DropDownList.cs
- ConnectionStringsExpressionBuilder.cs
- CutCopyPasteHelper.cs
- HierarchicalDataBoundControlAdapter.cs
- SpinLock.cs
- LongTypeConverter.cs
- QuotedPrintableStream.cs