Re: Want to pass a structure in my ATL function call

From:
"Alexander Nickolov" <agnickolov@mvps.org>
Newsgroups:
microsoft.public.vc.atl
Date:
Thu, 5 Oct 2006 10:25:53 -0700
Message-ID:
<OmmTQNK6GHA.4112@TK2MSFTNGP04.phx.gbl>
What version of MIDL do you use? Is this the one from VC6?
If yes, you need to install the Plktform SDK (Feb 2003 is the
last one compatible with VC6) and use MIDL from there.
Also, lose the typedef on the struct - you don't need it. Instead,
use "struct UDTVariable" throughout your IDL file.

--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@mvps.org
MVP VC FAQ: http://www.mvps.org/vcfaq
=====================================

"rachana.agr" <rachana.agr@gmail.com> wrote in message
news:1160022863.685549.127820@m73g2000cwd.googlegroups.com...

Hi Alexander,

Yes initialy I declared the Structure in the header file but that
should be declared in the idl file. After the declartion of Structure i
am getting these errors
********************
error MIDL2096 : duplicated attribute : [helpstring] [ Type
'UDTVariable1' ( Interface '__MIDL_itf_Structure_0209' ) ]

********************
This is my idl file....
*******************************************************

// Structure.idl : IDL source for Structure.dll
//

// This file will be processed by the MIDL tool to
// produce the type library (Structure.tlb) and marshalling code.

import "oaidl.idl";
import "ocidl.idl";

[
object,
uuid(CABFB498-2561-47C9-A991-BBF98A8C7331),
dual,
helpstring("Imyclass Interface"),
pointer_default(unique)
]
interface Imyclass : IDispatch
{

// [id(1), helpstring("method MakeCall")] HRESULT MakeCall(/*[in]*/
TreaderParty TTreaderParty, /*[out, retval]*/ BSTR**bstrArr);
};

[
uuid(3BE26CA5-53C4-4542-AD7A-378D0B416FB5),
version(1.0),
helpstring("Structure 1.0 Type Library")
]

typedef
   [
       uuid(84D5D628-EFFD-4274-8627-2275DC8315E0),
       version(1.0),
       helpstring("A Demo UDT variable for VB projects")
   ]
   struct UDTVariable {
       [helpstring("Special case variant")] BSTR Special;
       [helpstring("Name of the variable")] BSTR Name;
       [helpstring("Value of the variable")] long Value;
   } UDTVariable1;

library STRUCTURELib
{
importlib("stdole32.tlb");
importlib("stdole2.tlb");

[
uuid(84D5D628-EFFD-4274-8627-2275DC8315E0),
helpstring("myclass Class")
]
coclass myclass
{
[default] interface Imyclass;
};
};

Might be i am doing something wrong in the declartion of the Structure.
Please tell me the cause and the solution to get rid with this problem.
***************
Regards,
Rachana
Alexander Nickolov wrote:

This is part of your header. Does your IDL compile fine?
Could it be just a typo in the struct name compared to your
IDL file?

As far as Brian's concern about Automation-compatibility,
you can check this FAQ article if Automation is a concern
for you too:

http://www.mvps.org/vcfaq/com/4.htm

--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@mvps.org
MVP VC FAQ: http://www.mvps.org/vcfaq
=====================================

"rachana.agr" <rachana.agr@gmail.com> wrote in message
news:1159957510.774723.176420@i3g2000cwc.googlegroups.com...

Hi All,

I want to pass a structure in my ATL function. On defining signatures
of the ATL function i am getting this error
error MIDL2025 : syntax error : expecting a type specification near
"TreaderParty"

These are the signature i declared for my function
STDMETHOD(MakeCall)(/*[in]*/ TreaderParty TTreaderParty, /*[out,
retval]*/ BSTR**bstrArr);

Any help ...

Regards,
Rachana

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