/// <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);
}