accessible.py 文件源码

def _accessible_object_from_window(self, hwnd):
        """???????AccessibleObject

        :type hwnd: int
        :param hwnd: ??
        :raises: ValueError
        :rtype: comtypes.gen.Accessibility.IAccessible
        """
        if not win32gui.IsWindow(hwnd):
            raise ValueError("window(%s) is not valid!" % hwnd)

        OBJID_WINDOW = 0
        OBJID_CLIENT = -4
        if (win32gui.GetWindowLong(hwnd, win32con.GWL_STYLE) & win32con.WS_CHILDWINDOW) > 0:
            objID = OBJID_CLIENT
        else:
            objID = OBJID_WINDOW
        accObj = ctypes.POINTER(IAccessible)()
        ctypes.oledll.oleacc.AccessibleObjectFromWindow(hwnd, 
                                                        objID,
                                                        ctypes.byref(IAccessible._iid_), 
                                                        ctypes.byref(accObj))
        return accObj