Ok, I am still relatively new to python, but have chosen it as the
language to write a project in.
I have searched, googled and bought every O'Reilly book I can find.. and
am still stumped. I turn to your venerable forum of knowledge for
assistance.
The project uses a piece of USB HID hardware that scans the swipe strip
on credit cards and allows tracking, accounting etc for various
purposes. The device I am using at the moment comes from MagTek and
they supplied me with an OCX/ActiveX/COM control that their demo uses in
a vbscript (IE only) web page. While this is just dandy, I need a more
direct access method for a local instance in my project.
I used the MakePy.py tool, and did the expected - added it to the
Lib\site-packages\win32com\gen_py pile of supported COM components.
Here is the result of me attempting to use it manually in PyWin...
>>> import win32com.client
>>> swipe = win32com.client.Dispatch("ctlUSBHID.USBHID")
>>> swipe.PortOpen
False
>>> swipe.PortOpen = True
Traceback (most recent call last):
File "<interactive input>", line 1, in ?
File "C:\Python24\Lib\site-packages\win32com\client\__init__.py", line
463, in __setattr__
self._oleobj_.Invoke(*(args + (value,) + defArgs))
com_error: (-2147352567, 'Exception occurred.', (0, 'ctlUSBHID', 'Client
Site not available', None, 1000398, -2146827890), None)
>>>
The same process works fin in VBScript on the example page from
MagTek.. The generated py code from MakePy.py has
_prop_map_get_ = {
"CardData": (1745027073, 2, (8, 0), (), "CardData", None),
"CardEncodeType": (1745027082, 2, (8, 0), (), "CardEncodeType",
None),
"DeviceSerialNum": (1745027083, 2, (8, 0), (),
"DeviceSerialNum", None),
"MPrintData": (1745027086, 2, (12, 0), (), "MPrintData", None),
"MPrintLen": (1745027087, 2, (3, 0), (), "MPrintLen", None),
"MPrintStatus": (1745027084, 2, (3, 0), (), "MPrintStatus", None),
"PortOpen": (1745027072, 2, (11, 0), (), "PortOpen", None),
"SequenceNumber": (1745027085, 2, (3, 0), (), "SequenceNumber",
None),
}
_prop_map_put_ = {
"CardData": ((1745027073, LCID, 4, 0),()),
"CardEncodeType": ((1745027082, LCID, 4, 0),()),
"DeviceSerialNum": ((1745027083, LCID, 4, 0),()),
"MPrintData": ((1745027086, LCID, 4, 0),()),
"MPrintLen": ((1745027087, LCID, 4, 0),()),
"MPrintStatus": ((1745027084, LCID, 4, 0),()),
"PortOpen": ((1745027072, LCID, 4, 0),()),
"SequenceNumber": ((1745027085, LCID, 4, 0),()),
}
What am I doing wrong.? ..or is it something wrong in the COM control
itself?
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