The short answer is use pyAA. I tried your script on my machine and also saw the same bug. I switched your code around to use pyAA instead and everything worked as expected. Here is your changed code. I also imported win32traceutil to output the clicks to the Python Trace Collector
This isn't really an answer, just a work around import pythoncom, pyHook from threading import Timer from ctypes import oledll, windll, byref, POINTER from ctypes.wintypes import POINT from comtypes.client import wrap from comtypes.automation import VARIANT from comtypes import IUnknown import win32traceutil import pyAA oleacc = oledll.oleacc def AccessibleObjectFromPoint(x, y): #pacc = POINTER(IUnknown)() var = VARIANT() pacc = pyAA.AccessibleObjectFromPoint((x, y)) return pacc, var.value def ShowButton(): pythoncom.CoInitialize() x,y, = GetCursorPos() pacc, value = AccessibleObjectFromPoint(x, y) print pacc print pacc.Name() def GetCursorPos(): pt = POINT() windll.user32.GetCursorPos(byref(pt)) return pt.x, pt.y # Event handler def OnMouseClick(event): t = Timer(0.01, ShowButton) t.start() return True if __name__ == "__main__": hm = pyHook.HookManager() hm.MouseLeftDown = OnMouseClick hm.HookMouse() pythoncom.PumpMessages() -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Shane Clark Sent: Tuesday, February 26, 2008 9:37 AM To: comtypes-users@lists.sourceforge.net Subject: [comtypes-users] Confusion with accessible objects Hi, I am trying to do some Windows automation and I am having alot of trouble with even finding the names of the controls that I would like to manipulate. I need to launch a media player and play a file, so I wrote a quick little script to just grab the name of the control under my mouse when I click. It fails miserably in many programs with the following error: Exception in thread Thread-5: Traceback (most recent call last): File "C:\Python25\lib\threading.py", line 460, in __bootstrap self.run() File "C:\Python25\lib\threading.py", line 625, in run self.function(*self.args, **self.kwargs) File "comhook.py", line 23, in ShowButton print pacc.accName() File "C:\Python25\Lib\site-packages\comtypes\__init__.py", line 607, in __call __ return self.getter(self.im_inst, *args) COMError: (-2147024809, 'The parameter is incorrect.', (None, None, None, 0, Non e)) Am I completely misunderstanding something or going about this the wrong way? Here is my code for reference: import pythoncom, pyHook from threading import Timer from ctypes import oledll, windll, byref, POINTER from ctypes.wintypes import POINT from comtypes.client import wrap from comtypes.automation import VARIANT from comtypes import IUnknown oleacc = oledll.oleacc def AccessibleObjectFromPoint(x, y): pacc = POINTER(IUnknown)() var = VARIANT() oleacc.AccessibleObjectFromPoint(POINT(x, y), byref(pacc), byref(var)) return wrap(pacc), var.value def ShowButton(): pythoncom.CoInitialize() x,y, = GetCursorPos() pacc, value = AccessibleObjectFromPoint(x, y) print pacc.accName() def GetCursorPos(): pt = POINT() windll.user32.GetCursorPos(byref(pt)) return pt.x, pt.y # Event handler def OnMouseClick(event): t = Timer(0.01, ShowButton) t.start() return True if __name__ == "__main__": hm = pyHook.HookManager() hm.MouseLeftDown = OnMouseClick hm.HookMouse() pythoncom.PumpMessages() Any help is appreciated. ------------------------------------------------------------------------ - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ comtypes-users mailing list comtypes-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/comtypes-users ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ comtypes-users mailing list comtypes-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/comtypes-users
