[Ironpython-users] Automating Visual Studio with IronPython

Steve Dower s.j.dower at gmail.com
Sun Jun 26 17:06:56 CEST 2011

The MSDN docs show the difference between the two:


In short, OutputWindowEvents takes an (optional) parameter. You don't
see this in C# because it doesn't support parameterised properties,
but neither does Python (though you can fake it with __getitem__). If
you 'call' the property (or is that call the 'property'?) it will get
the value:


The other thing to keen in mind with EnvDTE events is that you have to
keep the event objects alive or you will stop receiving notifications,
so you will at least need to do:

Events_OutputWindowEvents = dte.Events.OutputWindowEvents()

and make sure that Events_OutputWindowEvents doesn't get collected.

On Sun, Jun 26, 2011 at 04:23, Denis <denis at camfex.cz> wrote:
> Hi
> I am trying to automating some boring task by writing macros for
> Visual Studio 2010.
> I am not a .NET nor C# expert, I work with C++ and have some Python background.
> So Python seemed more comfortable for me to do the task.
> What I got stuck on is receiving Visual Studio events.
> Some of them can be handled well but other are not.
> By irony, the latters events are the ones that needed to be handled.
> Ok, let us start from IronPython console in Visual Studio 2010.
>>> import clr
>>> clr.AddReference("EnvDTE")
>>> import EnvDTE, System.Runtime.InteropServices.Marshal
>>> dte = System.Runtime.InteropServices.Marshal.GetActiveObject("VisualStudio.DTE")
>>> def onopen(): print 'solution opened!'
>>> EnvDTE._dispSolutionEvents_Event.add_Opened(dte.Events.SolutionEvents, onopen)
> Ok, the event installed and even works fine.
> Lets go on.
>>> def onupdated(): print 'pane updated!'
>>> EnvDTE._dispOutputWindowEvents_Event.add_PaneUpdated(dte.Events.OutputWindowEvents, onupdated)
> Traceback (most recent call last):
>  File "<string>", line 1, in <module>
> TypeError: expected _dispOutputWindowEvents_Event, got DispCallable
>>» print type(dte.Events.OutputWindowEvents)
> <type 'DispCallable'>
>>» print type(dte.Events.SolutionEvents)
> <type '__ComObject'>
> Oops.
> Seems like dte.Events.SolutionEvents and dte.Events.OutputWindowEvents
> are not similar at all.
> Why do they have so different type?
> Both events works similar way with VisualBasic.
> Thinking that DispCallable may have something todo with IDispatch,
> lets try another way:
>> dte.Events.OutputWindowEvents("add_PaneUpdated", onupdated)
> Traceback (most recent call last):
>  File "<string>", line 1, in <module>
> StandardError: Error while invoking OutputWindowEvents.
> Oops again :(
> So how to deal with DispCallable?
> How to query interface _dispOutputWindowEvents_Event on it?
> Thanks in advance.
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