Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / UIAutomation / UIAutomationClient / MS / Internal / Automation / WindowVisualStateTracker.cs / 1 / WindowVisualStateTracker.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: Class used to track the visual appearance of Windows and make sure any events // are propogated to that new UI. // // History: // 01/05/2005 : Miw Created // //--------------------------------------------------------------------------- using System; using System.Windows.Automation; 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 WindowVisualStateTracker : WinEventWrap { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors internal WindowVisualStateTracker() : base(new int[] { NativeMethods.EVENT_OBJECT_LOCATIONCHANGE }) { // 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); // Raise this event only for elements with the WindowPattern. object patternObject; if (!rawEl.TryGetCurrentPattern(WindowPattern.Pattern, out patternObject)) return; Object windowVisualState = rawEl.GetPatternPropertyValue(WindowPattern.WindowVisualStateProperty, false); // if has no state value just return if (!(windowVisualState is WindowVisualState)) { return; } WindowVisualState state = (WindowVisualState)windowVisualState; // Filter... avoid duplicate events if (hwnd == _lastHwnd && state == _lastState) { return; } AutomationPropertyChangedEventArgs e = new AutomationPropertyChangedEventArgs( WindowPattern.WindowVisualStateProperty, null, 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 WindowVisualState _lastState; // keep track of last visual 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 the visual appearance of Windows and make sure any events // are propogated to that new UI. // // History: // 01/05/2005 : Miw Created // //--------------------------------------------------------------------------- using System; using System.Windows.Automation; 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 WindowVisualStateTracker : WinEventWrap { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors internal WindowVisualStateTracker() : base(new int[] { NativeMethods.EVENT_OBJECT_LOCATIONCHANGE }) { // 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); // Raise this event only for elements with the WindowPattern. object patternObject; if (!rawEl.TryGetCurrentPattern(WindowPattern.Pattern, out patternObject)) return; Object windowVisualState = rawEl.GetPatternPropertyValue(WindowPattern.WindowVisualStateProperty, false); // if has no state value just return if (!(windowVisualState is WindowVisualState)) { return; } WindowVisualState state = (WindowVisualState)windowVisualState; // Filter... avoid duplicate events if (hwnd == _lastHwnd && state == _lastState) { return; } AutomationPropertyChangedEventArgs e = new AutomationPropertyChangedEventArgs( WindowPattern.WindowVisualStateProperty, null, 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 WindowVisualState _lastState; // keep track of last visual 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
- KerberosSecurityTokenProvider.cs
- InheritanceContextHelper.cs
- CompilationLock.cs
- DescriptionAttribute.cs
- DataControlFieldHeaderCell.cs
- ClosableStream.cs
- EmptyReadOnlyDictionaryInternal.cs
- Comparer.cs
- ExpressionVisitorHelpers.cs
- ParsedAttributeCollection.cs
- ServicePerformanceCounters.cs
- HostingEnvironmentWrapper.cs
- DrawingContextWalker.cs
- TransformValueSerializer.cs
- WebScriptMetadataMessageEncodingBindingElement.cs
- SqlDataSourceCache.cs
- WebExceptionStatus.cs
- BuildResult.cs
- ElementNotAvailableException.cs
- _ConnectStream.cs
- CacheDependency.cs
- AnnotationComponentManager.cs
- TextEditorMouse.cs
- ProxyRpc.cs
- GridViewColumnHeaderAutomationPeer.cs
- SizeAnimationUsingKeyFrames.cs
- BaseValidator.cs
- COM2ICategorizePropertiesHandler.cs
- ProviderMetadataCachedInformation.cs
- DataPagerCommandEventArgs.cs
- AttachInfo.cs
- ContractNamespaceAttribute.cs
- RawUIStateInputReport.cs
- SafeNativeMethodsMilCoreApi.cs
- Calendar.cs
- EpmContentSerializerBase.cs
- ConstructorNeedsTagAttribute.cs
- CompositeScriptReferenceEventArgs.cs
- SqlEnums.cs
- AsymmetricSignatureFormatter.cs
- CapabilitiesUse.cs
- EventLogInformation.cs
- RSACryptoServiceProvider.cs
- MenuItemCollection.cs
- CodeCastExpression.cs
- Panel.cs
- DataServiceOperationContext.cs
- CapabilitiesAssignment.cs
- TerminateDesigner.cs
- AutoResetEvent.cs
- PartialCachingControl.cs
- LOSFormatter.cs
- EmptyElement.cs
- DataGridViewSelectedCellCollection.cs
- LineBreakRecord.cs
- WindowsAltTab.cs
- IssuedSecurityTokenParameters.cs
- OletxDependentTransaction.cs
- FontWeight.cs
- RegexMatchCollection.cs
- WindowsListView.cs
- shaperfactoryquerycachekey.cs
- MaskedTextBox.cs
- ApplicationFileParser.cs
- FixedSOMGroup.cs
- DataGridViewAccessibleObject.cs
- NotSupportedException.cs
- ThreadAbortException.cs
- ExceptionValidationRule.cs
- _WinHttpWebProxyDataBuilder.cs
- StatusBarItemAutomationPeer.cs
- StylusPointPropertyId.cs
- UrlAuthFailedErrorFormatter.cs
- UnauthorizedAccessException.cs
- TimeZone.cs
- EncoderBestFitFallback.cs
- EmptyEnumerator.cs
- FocusChangedEventArgs.cs
- LicFileLicenseProvider.cs
- SerializerProvider.cs
- InternalPermissions.cs
- SocketElement.cs
- CodeNamespace.cs
- SafeArrayRankMismatchException.cs
- XslTransform.cs
- _SslStream.cs
- sitestring.cs
- WindowsIPAddress.cs
- Calendar.cs
- TableLayoutSettingsTypeConverter.cs
- ServiceObjectContainer.cs
- InternalSendMessage.cs
- CategoryValueConverter.cs
- ConnectionPoolManager.cs
- DependencyPropertyConverter.cs
- EditableTreeList.cs
- XmlNullResolver.cs
- LicenseException.cs
- ValueSerializer.cs
- DataGridViewImageColumn.cs