[python-win32] Bypassing gen_py, accessing makepy-generated class directly

[Mark Hammond]

[oops - resend with cc to list]

It should be fine if the typelib itself doesn't register, so long as the 
objects themselves are registered.  You should still run makepy over the 
typelib normally (so the generated file is still in the normal 
directory), but generating it to its own file should still work ok too - 
CoClassBaseClass is defined in win32com.client(.__init__.py) - it's 
possible the generation with -i doesn't import this and will need a 
manual fixup)

   Then you can do something like:

ob = win32com.client.Dispatch("The.ClassId")

at which point 'ob' is going to be a "dumb dispatch" object as it can't 
find the typelib.  Then, if you ran makepy "normally" you could do:

kls = win32com.client.gencache.GetClassForProgID("The.ClassId")
# wrap the dumb object in the generated class
ob = kls(ob)

or with makepy -i, something like:

import somelib
# wrap the dumb object in the generated class
ob = somelib.TheClassName(ob)

Hope that answers the question!

Mark


On 17/12/2013 11:15 AM, Jim Bell wrote:
> I have a somelib.dll/somelib.tlb that doesn't register, and I want to
> bypass the gen_py mechanism to package it better. I run makepy -o
> somelib.py.
>
> I should be able to instantiate it more directly, not through
> client.Dispatch(), shouldn't I? Manually wrap it analogously to the server?
>
> I see somelib.SomeApplication inherits CoClassBaseClass, and that wants
> to construct with some sort of object, but what?
>
> # Like this
> import somelib
> # Not win32com.client.Dispatch(...)
> app = somelib.SomeApplication(someMagicHere)
> # Above raises 'Class not registered' if passed None.
>
> This thread seemed to be in the ballpark, but I'm still missing
> something...
> https://mail.python.org/pipermail/python-win32/2009-December/009860.html
>
> And I know that, conceptually, something actually needs to reference the
> .dll somewhere, and I don't see that happening. (And that sure seems
> like ctypes domain, too.)
>
> Where's my disconnect?
>
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