Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / 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
- RectValueSerializer.cs
- ListCommandEventArgs.cs
- TcpChannelHelper.cs
- EncoderParameter.cs
- TreeNodeClickEventArgs.cs
- Semaphore.cs
- XpsFilter.cs
- LocationSectionRecord.cs
- GridEntryCollection.cs
- ProcessInfo.cs
- HtmlHead.cs
- NativeMethodsCLR.cs
- QuotedPairReader.cs
- ReadOnlyMetadataCollection.cs
- WithParamAction.cs
- RightsManagementPermission.cs
- ParenthesizePropertyNameAttribute.cs
- TextBoxBase.cs
- ControlsConfig.cs
- DataSourceXmlElementAttribute.cs
- COAUTHIDENTITY.cs
- ProfileSettingsCollection.cs
- LicenseProviderAttribute.cs
- InputLanguage.cs
- DataGridHeaderBorder.cs
- InfoCardRSAPKCS1KeyExchangeDeformatter.cs
- WriteFileContext.cs
- WebPartCatalogCloseVerb.cs
- MappingException.cs
- HttpContext.cs
- RuntimeHelpers.cs
- Matrix.cs
- FileDataSource.cs
- FixedSOMTextRun.cs
- UIElementCollection.cs
- StateDesigner.cs
- MenuStrip.cs
- WindowCollection.cs
- GatewayIPAddressInformationCollection.cs
- LinkDescriptor.cs
- Propagator.Evaluator.cs
- PropertyRecord.cs
- WindowsSpinner.cs
- CodeCommentStatementCollection.cs
- AbsoluteQuery.cs
- DataStreamFromComStream.cs
- ImageAttributes.cs
- SupportsEventValidationAttribute.cs
- DrawingBrush.cs
- ErrorRuntimeConfig.cs
- ToolBarButtonClickEvent.cs
- StaticTextPointer.cs
- MailHeaderInfo.cs
- CustomErrorCollection.cs
- DeferrableContentConverter.cs
- KeyGestureValueSerializer.cs
- FactoryRecord.cs
- MetadataItem_Static.cs
- VisualState.cs
- DropTarget.cs
- DataGridTextBoxColumn.cs
- ButtonAutomationPeer.cs
- OutputScopeManager.cs
- CodeTypeReferenceSerializer.cs
- CultureInfo.cs
- XamlTypeMapper.cs
- TextEditorMouse.cs
- GetReadStreamResult.cs
- Base64Decoder.cs
- Light.cs
- SchemaComplexType.cs
- HashJoinQueryOperatorEnumerator.cs
- DataGridViewColumn.cs
- ContentPresenter.cs
- ObjectPropertyMapping.cs
- RelationshipNavigation.cs
- ContextStack.cs
- RelationshipFixer.cs
- ElapsedEventArgs.cs
- Tracer.cs
- HelpProvider.cs
- DesignerForm.cs
- ScriptingRoleServiceSection.cs
- GridViewCommandEventArgs.cs
- DisplayInformation.cs
- MetadataCollection.cs
- RotateTransform3D.cs
- TimeStampChecker.cs
- DataContractJsonSerializerOperationFormatter.cs
- VisualTransition.cs
- DependencyObjectType.cs
- DragEventArgs.cs
- ProcessStartInfo.cs
- CodeSnippetStatement.cs
- ByteFacetDescriptionElement.cs
- CacheMode.cs
- XomlCompilerError.cs
- ClientRuntimeConfig.cs
- GenericEnumerator.cs
- DataRecordInternal.cs