accessing an OLE Automation (IDispatch) server from python which requires the use of "out params"
paul at subsignal.org
Tue Dec 11 09:42:35 CET 2012
Am 10.12.2012 20:13, schrieb bitbucket:
> 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.
Before switching technologies I'd check if this solves your problem
TL;DR IMHO "out" parameters are basically pointers (pass by reference)
and need to be passed like GetSettingValue("name", [ref]$value)...
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