/// <summary> /// Enumerates all child windows. WARNING: The method returns null if operation timeout is reached. /// </summary> /// <param name="milliSecondsTimeout">a timeout for the operation. when a window is busy or non responding these method freeze. you can handle this with the operation timeout</param> /// <returns>result array or null</returns> public IntPtr[] EnumerateWindows(int milliSecondsTimeout) { if (milliSecondsTimeout < 0) { throw new ArgumentOutOfRangeException("milliSecondsTimeout"); } if (SearchOrder.Count == 0) { return(new IntPtr[0]); } try { lock (_lockInstance) { Result.Clear(); _currentInstance = this; Thread thread1 = new Thread(new ParameterizedThreadStart(EnumerateWindowsAsync)); WaitHandle[] waitHandles = new WaitHandle[1]; ManualResetEvent mre1 = new ManualResetEvent(false); waitHandles[0] = mre1; thread1.Start(mre1); bool result = WaitHandle.WaitAll(waitHandles, milliSecondsTimeout); if (!result) { thread1.Abort(); Result.Clear(); _currentInstance = null; return(null); } else { _currentInstance = null; } } return(Result.ToArray()); } catch (Exception exception) { DebugConsole.Default.WriteException(exception); throw; } }
private static IDisposableSequence <ProxyInformation> GetKnownAccessibleProxiesFromPath(IEnumerable <AccessibleWindowTarget> targets, int maximumResultCount) { if (null == targets) { throw new ArgumentNullException("targets"); } RunningWindowTableItemCollection result = new RunningWindowTableItemCollection(); if (maximumResultCount <= 0) { return(result); } foreach (AccessibleWindowTarget target in targets) { WindowEnumerator enumerator = new WindowEnumerator( target.MainClassName, target.MainClassNameEnd, (WindowEnumerator.FilterMode)Convert.ToInt32(target.NameCompare)); IntPtr[] mainHandles = enumerator.EnumerateWindows(_mainWindowTimeoutMilliseconds); if (null == mainHandles) { continue; } foreach (IntPtr item in mainHandles) { ChildWindowBatchEnumerator childEnumerator = new ChildWindowBatchEnumerator(item); foreach (string subItem in target.ChildPath) { childEnumerator.SearchOrder.Add( new ChildWindowBatchEnumerator.SearchCriteria(subItem)); } IntPtr[] childHandles = childEnumerator.EnumerateWindows(_childWindowTimeoutMilliseconds); if (null == childHandles) { continue; } foreach (IntPtr childHandle in childHandles) { object accObject = Win32.AccessibleObjectFromWindow(childHandle); if (null != accObject && accObject is MarshalByRefObject) { object targetProxy = null; if (!String.IsNullOrEmpty(target.AccPropertyName)) { targetProxy = TryInvokeProperty(accObject, target.AccPropertyName); Marshal.ReleaseComObject(accObject); } else { targetProxy = accObject; } if (null != targetProxy) { string itemComponentName = TypeDescriptor.GetComponentName(targetProxy); COMTypes.ITypeInfo typeInfo = RunningObjectTable.TryCreateTypeInfo(targetProxy); string library = RunningObjectTable.GetParentLibraryGuid(typeInfo).ToString(); string id = GetTypeGuid(typeInfo).ToString(); string itemClassName = TypeDescriptor.GetClassName(targetProxy); string itemCaption = itemClassName; if (!String.IsNullOrWhiteSpace(itemClassName) && !String.IsNullOrWhiteSpace(itemComponentName)) { itemCaption = String.Format("{0} {1}", itemComponentName, itemClassName); } IntPtr procID = Win32.GetWindowThreadProcessId(childHandle); ProxyInformation.ProcessElevation procElevation = ProcessElevation.ConvertToProcessElevation(ProcessElevation.IsProcessElevated(procID)); ProxyInformation info = new ProxyInformation(targetProxy, itemCaption, id, itemClassName, itemComponentName, library, procID, procElevation); result.Add(info); if (null != typeInfo) { RunningObjectTable.ReleaseTypeInfo(typeInfo); } if (result.Count >= maximumResultCount) { return(result); } } } } } } return(result); }