void eventGrabber_Grabbed(object sender, EventGrabber.GrabbedEventArgs e)
{
if (!Dispatcher.CheckAccess())
{
Dispatcher.Invoke(new EventHandler <EventGrabber.GrabbedEventArgs>(eventGrabber_Grabbed), new object[] { sender, e });
}
else
{
if ((e.EventType == SetWinEventHookEventType.EVENT_OBJECT_LOCATIONCHANGE) && (e.ObjectId == -8))
{
IAccessible acc = null;
FromEvent(e.Window, e.ObjectId, 0, out acc);
if (acc != null)
{
int left = 0;
int top = 0;
int width = 0;
int height = 0;
acc.accLocation(out left, out top, out width, out height);
if (left != 0 && top != 0)
{
ShowCaretTrackWindow(left, top);
}
else
{
_caretTrackWindow.Hide();
}
}
}
}
}
public void Click()
{
int x, y, width, height;
IAcc.accLocation(out x, out y, out width, out height, 0);
SUIMouse.MouseClick(x, y);
}
private static void LogAccessibleObject(int depth, IntPtr hWnd, IAccessible child)
{
sFile.Write(new String(' ', depth));
string value;
try
{
value = child.accValue[0];
}
catch (Exception)
{
value = "";
}
string roleString;
try
{
roleString = child.accRole[0] as string;
if (child.accRole[0] is int)
{
roleString = Enum.GetName(typeof(AccessibleRole), (int)child.accRole[0]);
}
}
catch (NullReferenceException)
{
roleString = "<undefined role>";
}
int left, width, top, height;
try
{
child.accLocation(out left, out top, out width, out height);
}
catch (Exception)
{
left = width = top = height = -1;
}
string name;
try
{
name = child.accName[0];
}
catch (NullReferenceException)
{
name = "<no name>";
}
sFile.WriteLine("{0}[{1}]:{2}={3}, Role:{4}, State:{5}, Pos:{6},{7}", hWnd.ToString("X"), GetClassName(hWnd), name, value, roleString, child.accState[0], left, top);
}
private void SetLocation(IAccessible accObject)
{
if (accObject != null)
{
int x1, y1;
int width;
int hieght;
accObject.accLocation(out x1, out y1, out width, out hieght, 0);
_location = new Rectangle(x1, y1, x1 + width, y1 + hieght);
}
}
public static Rectangle GetIHTMLDocumentPosition(IHTMLDocument doc)
{
if (doc != null)
{
IAccessible pAcc = IHTMLDocumentToMSAA(doc);
if (pAcc != null)
{
int left, top, width, height;
pAcc.accLocation(out left, out top, out width, out height, 0);
return(new Rectangle(left, top, width, height));
}
}
return(new Rectangle(0, 0, 0, 0));
}
public static Rectangle GetIHTMLPosition(IHTMLElement element)
{
while (element != null)
{
IAccessible pAcc = IHTMLElementToMSAA(element);
if (pAcc != null)
{
int left, top, width, height;
pAcc.accLocation(out left, out top, out width, out height, 0);
return(new Rectangle(left, top, width, height));
}
else
{
element = element.parentElement;
}
}
return(new Rectangle(0, 0, 0, 0));
}
internal static Rectangle GetAccLocation(IAccessible accObj, int childId)
{
int pxLeft = 0;
int pyTop = 0;
int pcxWidth = 0;
int pcyHeight = 0;
try
{
accObj.accLocation(out pxLeft, out pyTop, out pcxWidth, out pcyHeight, childId);
}
catch (Exception exception)
{
if (!IsOleAccException(exception) || !IsOleAccExceptionMaskable(exception))
{
throw;
}
}
return(new Rectangle(pxLeft, pyTop, pcxWidth, pcyHeight));
}
private void SetLocation(IAccessible accObject)
{
if (accObject != null)
{
int x1, y1;
int width;
int hieght;
accObject.accLocation(out x1, out y1, out width, out hieght, 0);
_location = new Rectangle(x1, y1, x1 + width, y1 + hieght);
}
}
void IAccessibleInternal.accLocation(out int l, out int t, out int w, out int h, object childID) => publicIAccessible.accLocation(out l, out t, out w, out h, childID);
public AccessibleInformation GetInformation()
{
AccessibleInformation infor = new AccessibleInformation();
int x, y, width, height;
int index = 0;
//有些接口方法并未实现，有些属性无效，或者其他原因， 总之IAccessible的接口方法不安全，需要自行处理异常
getValue : try
{
switch (index)
{
case 0 :
infor.AccDescription = _self.accDescription[_id];
break;
case 1:
infor.AccHelp = _self.accHelp[_id];
break;
case 2:
infor.AccDefaultAction = _self.accDefaultAction[_id];
break;
case 3:
infor.AccName = _self.accName[_id];
break;
case 4:
infor.AccRole = _self.accRole[_id];
break;
case 5:
infor.AccState = _self.accState[_id];
break;
case 6:
infor.AccValue = _self.accValue[_id];
break;
case 7:
infor.AccKeyboardShortcut = _self.accKeyboardShortcut[_id];
break;
case 8:
_self.accLocation(out x, out y, out width, out height, _id);
infor.AccLocation = new Rectangle(x, y, width, height);
break;
case 9:
infor.AccChildId = _id;
break;
case 10:
if (_id == 0)
{
infor.AccChildCount = _self.accChildCount;
}
else
{
infor.AccChildCount = (_self.accChild[_id] as IAccessible).accChildCount;
}
break;
}
}
catch
{
//catch (System.NotImplementedException)
//catch (System.ArgumentException)
//catch (System.Runtime.InteropServices.COMException)
}
if (++index != 11)
{
goto getValue;
}
infor.HandleWindow = _hwnd;
StringBuilder stringBuilder = new StringBuilder(200);
if (NativeMethods.GetClassName(_hwnd, stringBuilder, 200) != 0)
{
infor.ClassNameWindow = stringBuilder.ToString();
}
int buffer = NativeMethods.GetWindowTextLength(_hwnd) + 1;
stringBuilder = new StringBuilder(buffer);
if (NativeMethods.GetWindowText(_hwnd, stringBuilder, buffer) != 0)
{
infor.TitleWindow = stringBuilder.ToString();
}
return(infor);
}
internal static NativeMethods.Win32Rect GetLocation(IAccessible acc, int idChild)
{
//
NativeMethods.Win32Rect rect = NativeMethods.Win32Rect.Empty;
try
{
acc.accLocation(out rect.left, out rect.top, out rect.right/*width*/, out rect.bottom/*height*/, idChild );
}
catch (Exception e)
{
// Some impls (eg Media Center) return odd error codes;
// so treat all but critical ones as a 'soft' failure (return empty rect)
// Some impls (MediaPlayer) return E_POINTER, which translates
// to NullReferenceException; ignore that also.
if (Misc.IsCriticalException(e) && ! (e is NullReferenceException))
{
throw;
}
return NativeMethods.Win32Rect.Empty;
}
rect.right += rect.left; // convert width to right
rect.bottom += rect.top; // convert height to bottom
return rect;
}
void UnsafeNativeMethods.IAccessibleInternal.accLocation(out int l, out int t, out int w, out int h, object childID)
{
IntSecurity.UnmanagedCode.Assert();
publicIAccessible.accLocation(out l, out t, out w, out h, childID);
}
