On Nov 19, 2007 5:54 AM, Thomas Heller <[EMAIL PROTECTED]> wrote:
> Shane Clark schrieb:
> > Hi,
> >
> > I am trying to get my python app to output the name of the control
> > under the mouse each time it is clicked. Currently, I am trying to do
> > this with a combination of pyhook and pyAA, but pyAA gives me errors
> > for almost any control in Microsoft Office and some other apps that I
> > need to support.
> >
> > I have seen comtypes referenced several times while searching for
> > answers, but I am intermediate at best in Python and do not have great
> > knowledge of COM in general. Could anyone point me in the right
> > direction on how I might get this functionality using comtypes?
>
> I have no idea what the problems with pyhook or pyAA are, but I made a simple
> script for comtypes that works for me, with comtypes 0.4.0. When I have MS
> Word
> open, and the cursor is over the 'Save' button, the document is saved when I
> run the script.
> It may get you started.
>
> Thomas
>
> <code>
> 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 GetCursorPos():
> pt = POINT()
> windll.user32.GetCursorPos(byref(pt))
> return pt.x, pt.y
>
> if __name__ == "__main__":
> x, y = GetCursorPos()
> pacc, value = AccessibleObjectFromPoint(x, y)
> print pacc.accName()
> print pacc.accDefaultAction()
> print pacc.accDoDefaultAction()
> <code/>
>
>
>
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>
I incorporated that snippet into a little test script and I still have
trouble with Office controls. If I run your example all is well, but
mine gives the following error: "WindowsError: [Error -2147417843] An
outgoing call cannot be made since the application is dispatching an
input-synchronous call"
Presumably, this is a timing problem, as I found references to it in
other contexts. I have no idea how to resolve it at this point, but I
am exploring it. Has anyone else seen this error from comtypes? My
code is below.
<code>
import pythoncom, pyHook
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 GetCursorPos():
pt = POINT()
windll.user32.GetCursorPos(byref(pt))
return pt.x, pt.y
def OnMouseClick(event):
x,y = GetCursorPos()
pacc, value = AccessibleObjectFromPoint(x, y)
print pacc.accName()
# return True to pass the event to other handlers
return True
if __name__ == "__main__":
# create a hook manager
hm = pyHook.HookManager()
# watch for left-click events
hm.MouseLeftDown = OnMouseClick
# set the hook
hm.HookMouse()
# wait forever
pythoncom.PumpMessages()
</code>
Thanks,
-Shane Clark
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