Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / UIAutomation / UIAutomationClient / MS / Internal / Automation / WindowInteractionStateTracker.cs / 1 / WindowInteractionStateTracker.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: // 01/05/2005 : Created // //--------------------------------------------------------------------------- using System; using System.Globalization; using System.Text; using System.Windows.Automation; using System.Diagnostics; using MS.Win32; namespace MS.Internal.Automation { // Class used to track new UI appearing and make sure any events // are propogated to that new UI. internal class WindowInteractionStateTracker : WinEventWrap { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors internal WindowInteractionStateTracker() : base(new int[] { NativeMethods.EVENT_OBJECT_STATECHANGE }) { // Intentionally not setting the callback for the base WinEventWrap since the WinEventProc override // in this class calls RaiseEventInThisClientOnly to actually raise the event to the client. } #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; } OnStateChange(hwnd, idObject, idChild); } #endregion Internal Methods //------------------------------------------------------ // // Private Methods // //------------------------------------------------------ #region Private Methods private void OnStateChange(IntPtr hwnd, int idObject, int idChild) { NativeMethods.HWND nativeHwnd = NativeMethods.HWND.Cast(hwnd); // Ignore windows that have been destroyed if (!SafeNativeMethods.IsWindow(nativeHwnd)) { return; } AutomationElement rawEl = AutomationElement.FromHandle(hwnd); try { rawEl.GetCurrentPattern(WindowPattern.Pattern); } catch (InvalidOperationException) { // Only raise this event for elements with the WindowPattern. return; } Object windowInteractionState = rawEl.GetPatternPropertyValue(WindowPattern.WindowInteractionStateProperty, false); // if has no state value just return if (!(windowInteractionState is WindowInteractionState)) { return; } WindowInteractionState state = (WindowInteractionState)windowInteractionState; // Filter... avoid duplicate events if (hwnd == _lastHwnd && state == _lastState) { return; } AutomationPropertyChangedEventArgs e = new AutomationPropertyChangedEventArgs( WindowPattern.WindowInteractionStateProperty, hwnd == _lastHwnd ? _lastState : WindowInteractionState.Running, state); ClientEventManager.RaiseEventInThisClientOnly(AutomationElement.AutomationPropertyChangedEvent, rawEl, e); // save the last hwnd/rect for filtering out duplicates _lastHwnd = hwnd; _lastState = state; } #endregion Private Methods //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Fields private WindowInteractionState _lastState; // keep track of last interaction state private IntPtr _lastHwnd; // and hwnd for dup checking #endregion Private Fields } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // //// 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: // 01/05/2005 : Created // //--------------------------------------------------------------------------- using System; using System.Globalization; using System.Text; using System.Windows.Automation; using System.Diagnostics; using MS.Win32; namespace MS.Internal.Automation { // Class used to track new UI appearing and make sure any events // are propogated to that new UI. internal class WindowInteractionStateTracker : WinEventWrap { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors internal WindowInteractionStateTracker() : base(new int[] { NativeMethods.EVENT_OBJECT_STATECHANGE }) { // Intentionally not setting the callback for the base WinEventWrap since the WinEventProc override // in this class calls RaiseEventInThisClientOnly to actually raise the event to the client. } #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; } OnStateChange(hwnd, idObject, idChild); } #endregion Internal Methods //------------------------------------------------------ // // Private Methods // //------------------------------------------------------ #region Private Methods private void OnStateChange(IntPtr hwnd, int idObject, int idChild) { NativeMethods.HWND nativeHwnd = NativeMethods.HWND.Cast(hwnd); // Ignore windows that have been destroyed if (!SafeNativeMethods.IsWindow(nativeHwnd)) { return; } AutomationElement rawEl = AutomationElement.FromHandle(hwnd); try { rawEl.GetCurrentPattern(WindowPattern.Pattern); } catch (InvalidOperationException) { // Only raise this event for elements with the WindowPattern. return; } Object windowInteractionState = rawEl.GetPatternPropertyValue(WindowPattern.WindowInteractionStateProperty, false); // if has no state value just return if (!(windowInteractionState is WindowInteractionState)) { return; } WindowInteractionState state = (WindowInteractionState)windowInteractionState; // Filter... avoid duplicate events if (hwnd == _lastHwnd && state == _lastState) { return; } AutomationPropertyChangedEventArgs e = new AutomationPropertyChangedEventArgs( WindowPattern.WindowInteractionStateProperty, hwnd == _lastHwnd ? _lastState : WindowInteractionState.Running, state); ClientEventManager.RaiseEventInThisClientOnly(AutomationElement.AutomationPropertyChangedEvent, rawEl, e); // save the last hwnd/rect for filtering out duplicates _lastHwnd = hwnd; _lastState = state; } #endregion Private Methods //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Fields private WindowInteractionState _lastState; // keep track of last interaction state private IntPtr _lastHwnd; // and hwnd for dup checking #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
- LocalizeDesigner.cs
- ContentFilePart.cs
- lengthconverter.cs
- ChildrenQuery.cs
- SchemaImporterExtensionsSection.cs
- Expression.cs
- PrintEvent.cs
- DoubleCollectionConverter.cs
- MultiBindingExpression.cs
- ProcessRequestArgs.cs
- AffineTransform3D.cs
- sqlnorm.cs
- DetailsViewDeleteEventArgs.cs
- SQLRoleProvider.cs
- entitydatasourceentitysetnameconverter.cs
- DriveNotFoundException.cs
- CopyAction.cs
- BitmapSizeOptions.cs
- GiveFeedbackEventArgs.cs
- DBDataPermissionAttribute.cs
- TreeNodeBindingCollection.cs
- WindowsMenu.cs
- TextElementCollection.cs
- CustomAttributeBuilder.cs
- MinimizableAttributeTypeConverter.cs
- IdentityReference.cs
- DataTransferEventArgs.cs
- HwndHost.cs
- xmlsaver.cs
- AmbiguousMatchException.cs
- WmlLabelAdapter.cs
- UriScheme.cs
- PageVisual.cs
- Storyboard.cs
- CodeTypeParameter.cs
- WebBrowserNavigatedEventHandler.cs
- Hex.cs
- EditorAttribute.cs
- FieldAccessException.cs
- Registry.cs
- ProxyWebPartManager.cs
- SmiSettersStream.cs
- LayoutTableCell.cs
- CalloutQueueItem.cs
- Button.cs
- ByeMessageCD1.cs
- TypeSource.cs
- WebPartDescription.cs
- SecurityVersion.cs
- PerfService.cs
- RelOps.cs
- ObjectAssociationEndMapping.cs
- MaskDescriptors.cs
- SrgsElementList.cs
- WindowsSidIdentity.cs
- XmlUrlResolver.cs
- VectorAnimationBase.cs
- NameNode.cs
- UTF7Encoding.cs
- DescendentsWalkerBase.cs
- cookiecollection.cs
- MemberProjectedSlot.cs
- SecurityDocument.cs
- XsdBuildProvider.cs
- PngBitmapEncoder.cs
- SmtpReplyReaderFactory.cs
- DesignerActionVerbItem.cs
- CheckedListBox.cs
- UiaCoreTypesApi.cs
- WebPartCloseVerb.cs
- DataGridLength.cs
- SurrogateEncoder.cs
- ForeignConstraint.cs
- ResourcePermissionBaseEntry.cs
- Double.cs
- SqlDataSourceCache.cs
- CurrencyManager.cs
- SmiContext.cs
- LostFocusEventManager.cs
- FormatSettings.cs
- WebServiceBindingAttribute.cs
- FigureParaClient.cs
- SelectionProviderWrapper.cs
- RNGCryptoServiceProvider.cs
- wgx_exports.cs
- OutputCacheModule.cs
- RegistryPermission.cs
- EventMappingSettings.cs
- FontWeightConverter.cs
- OptimalBreakSession.cs
- ReflectEventDescriptor.cs
- ProfilePropertyNameValidator.cs
- BinHexDecoder.cs
- XmlLanguage.cs
- SocketInformation.cs
- TypeLibConverter.cs
- VisualStyleInformation.cs
- SerializableAttribute.cs
- itemelement.cs
- DataSvcMapFileSerializer.cs