I have an existing Windows application which provides an OLE Automation
(IDispatch) interface. I'm not able to change that interface. I'd like to
call it from a scripting language. I figure this would provide a nice quick
way to invoke on the app.
I initially tried this with Windows Powershell but ran into the following
problem. I was able to create the object and invoke simple methods on it.
However the interface for this app has methods which take out params. i.e. you
pass in a reference to a variable and the server fills in the value. I
couldn't get that to work. I finally gave up and decided it was just a
limitation of Powershell, not being able to work with those out params.
My next thought was to do it in python. I've been reading up on python and
I've found a decent amount of into out there on doing OLE and I'm optimistic.
But, I thought that I'd ask the question before digging too much farther into
it...
When calling an OLE Automation (IDispatch) server from python can I make use of
"out params" defined by the interface?
To get more specific, here's an example from the server's IDL for one of its
methods.
[id(15), helpstring("method GetSettingValue")] VARIANT_BOOL
GetSettingValue(BSTR settingName, BSTR* settingValue);
As you can see, you have to pass in an out param for settingValue. The server
fills this in for you. And this is what I couldn't get to work in Powershell.
Anyone know whether or not OLE from python will allow passing in out params?
Do you think this will work?
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