what's wrong with this picture?

Yari

CBuilder Developer

Mon, 10 Sep 2001 03:00:00 GMT

what's wrong with this picture?

Hi,
I'm new to BCB4 and COM, and I need help understanding what's wrong with
the following code:

ICRemoteRegManager* pp = NULL;
CoCRemoteRegManager::CoCreateInstance(CLSID_CRemoteRegManager,
IID_ICRemoteRegManager,(void
**)&pp);

pp->SetParam1 ((wchar_t*)"NANANA");

The appropriate type lib was imported.
pp stays NULL after the call to CoCreateInstance.

Am I using the right method?

Thanks.

aphrae

CBuilder Developer

Mon, 10 Sep 2001 03:00:00 GMT

Re:what's wrong with this picture?

Quote

Yariv wrote:

> Hi,
> I'm new to BCB4 and COM, and I need help understanding what's wrong with
> the following code:

> ICRemoteRegManager* pp = NULL;
> CoCRemoteRegManager::CoCreateInstance(CLSID_CRemoteRegManager,
> IID_ICRemoteRegManager,(void
> **)&pp);

> pp->SetParam1 ((wchar_t*)"NANANA");

That would be correct if you were using straight COM, but there are
wrapper classes.

You should do:

TCOMIRemoteRegManager mymanager =
CORemoteRegManager::CreateRemote(blah,blah,blah).
(Or, if you're doing it local, CORemoteRegManager::Create).

TCOMIRemoteRegManager and CORemoteRegManager will be defined in the
_TLB.H file generated when you import the type library.

Please note that the RemoteRegManager typelib MUST be instantiated on the remote
machine, as well.

Yari

CBuilder Developer

Thu, 13 Sep 2001 03:00:00 GMT

Re:what's wrong with this picture?

Thanks.
now my code looks like this:
TCOMICRemoteRegManager mngRemoteReg=CoCRemoteRegManager::Create ();
mngRemoteReg.SetParam1 ((wchar_t*)"NANANA");

and when trying to run and use the object I get the following error:
"Create(intfObj):no such interface supported"

As far as I could tell, the Create method gets no parameters, so what is intfObj?

Quote

aphrael wrote:
> Yariv wrote:

> > Hi,
> > I'm new to BCB4 and COM, and I need help understanding what's wrong with
> > the following code:

> > ICRemoteRegManager* pp = NULL;
> > CoCRemoteRegManager::CoCreateInstance(CLSID_CRemoteRegManager,
> > IID_ICRemoteRegManager,(void
> > **)&pp);

> > pp->SetParam1 ((wchar_t*)"NANANA");

> That would be correct if you were using straight COM, but there are
> wrapper classes.

> You should do:

> TCOMIRemoteRegManager mymanager =
> CORemoteRegManager::CreateRemote(blah,blah,blah).
> (Or, if you're doing it local, CORemoteRegManager::Create).

> TCOMIRemoteRegManager and CORemoteRegManager will be defined in the
> _TLB.H file generated when you import the type library.

> Please note that the RemoteRegManager typelib MUST be instantiated on the remote
> machine, as well.

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