Am 10.04.2014 12:19, schrieb Eko S.Wibowo:
> Hi dear community,
>
> I am trying to use INetCfg from python using comtypes
> http://msdn.microsoft.com/en-us/library/ff547694(v=vs.85).aspx
>
> After hours of research, finally I am able to create its TLB file and
> use it in the following unittest code.
>
[...]
>
> But I still unable to instantiate netcfgclass. It only a function return
> value, not a pointer as I expected it to be
> This is the INetCfgClass implementation automatically created by comtypes:
> class INetCfg(IUnknown):
> _case_insensitive_ = True
> _iid_ = GUID('{C0E8AE93-306E-11D1-AACF-00805FC1270E}')
> _idlflags_ = []
> INetCfg._methods_ = [
> COMMETHOD([], HRESULT, 'Initialize',
> ( ['in'], c_void_p, 'pvReserved' )),
> COMMETHOD([], HRESULT, 'Uninitialize'),
> COMMETHOD([], HRESULT, 'Apply'),
> COMMETHOD([], HRESULT, 'Cancel'),
> COMMETHOD([], HRESULT, 'EnumComponents',
> ( ['in'], POINTER(GUID), 'pguidClass' ),
> ( ['out'], POINTER(POINTER(IEnumNetCfgComponent)),
> 'ppenumComponent' )),
> COMMETHOD([], HRESULT, 'FindComponent',
> ( ['in'], WSTRING, 'pszwInfId' ),
> ( ['out'], POINTER(POINTER(INetCfgComponent)),
> 'pComponent' )),
> COMMETHOD([], HRESULT, 'QueryNetCfgClass',
> ( ['in'], POINTER(GUID), 'pguidClass' ),
> ( ['in'], POINTER(GUID), 'riid' ),
> ( ['out'], POINTER(c_void_p), 'ppvObject' )),
> ]
>
>
> How do I properly call QueryNetCfgClass ?
You should change the generated code for the QueryNetCfgClass so that
the 'out' parameter is a POINTER(POINTER(IUnknown)), then you can
try to QueryInterface the result to whatever you need (whatever
interface the returned objects implements). Change the generated code
to this:
COMMETHOD([], HRESULT, 'QueryNetCfgClass',
( ['in'], POINTER(GUID), 'pguidClass' ),
( ['in'], POINTER(GUID), 'riid' ),
## ( ['out'], POINTER(c_void_p), 'ppvObject' )),
( ['out'], POINTER(POINTER(IUnknown)), 'ppvObject' )),
Thomas
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