tlbexp command

[George2]

Hello everyone,


I find that we can use tlbexp command like *tlbexp <dll name>* to export tlb file for a C# COM assembly, but can not use it to export tlb file for an unmanaged C++ COM DLL. Is that correct?

I am wondering how to export tlb file of an unmanaged C++ COM DLL?


thanks in advance,
George

[kirants]

You need to use MIDL compiler to generate the tlb from the odl/idl files. This step is typically done as a part of compilation of the unmanaged COM dll itself.

[George2]

Thanks kirants,

You need to use MIDL compiler to generate the tlb from the odl/idl files. This step is typically done as a part of compilation of the unmanaged COM dll itself.

I find there is no odl/idl file generated for the unmanaged C++ COM DLL. I am using Visual Studio 2005, do I need to setup some options for the compiler or linker to generate odl/idl file?


regards,
George

[kirants]

No. The odl/idl file is not a generated file. It is a file that probably is a part of the project. It is needed if you want to export the class definition to a tlb file.

If the COM dll was created using ATL or MFC, an .odl/.idl file is typically generated by the appwizard. Please search your project directory for .odl/.idl files.

[George2]

Thanks kirants,


No. The odl/idl file is not a generated file. It is a file that probably is a part of the project. It is needed if you want to export the class definition to a tlb file.

If the COM dll was created using ATL or MFC, an .odl/.idl file is typically generated by the appwizard. Please search your project directory for .odl/.idl files.

I am not using ATL and MFC. I developed COM from pure Visual Studio C++ project.

In my situation, how to generate odl/idl?


regards,
George

[kirants]

Just to clarify,


have you written a dll that exports the following functions ?

DllCanUnloadNow @1 PRIVATE
DllGetClassObject @2 PRIVATE
DllRegisterServer @3 PRIVATE
DllUnregisterServer @4 PRIVATE
Have you generated your own class guids and the interface IIDs ? If, so please provide the details of the GUID and the class methods.

[George2]

Yes, kirants. I have implemented and have a .def file for the functions. Could you advise how to generate related idl file please?


regards,
George

Just to clarify,


have you written a dll that exports the following functions ?

DllCanUnloadNow @1 PRIVATE
DllGetClassObject @2 PRIVATE
DllRegisterServer @3 PRIVATE
DllUnregisterServer @4 PRIVATE
Have you generated your own class guids and the interface IIDs ? If, so please provide the details of the GUID and the class methods.

[kirants]

You will have to work backwards.
Your best bet would be to use a wizard to generate this one and stick in your GUIDs/IIDs.
Also, you have to make sure your registration code matches the idl contents.