ODL File help please?

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I have COM server that needs to talk to another COM server in the same process space.
I am using the ROT to setup access to the other COM server instance but suffered some unresolved externals for the one and only function I need to call. It was suggested that I import a tlb to supply the compiler with the necessary information so not having one I set off to make an ODL file that I could compile to the needed tlb.

The Class object is Cbcrshimcontrol
The member function I need to call is, static void MidiOutFromMaster(DWORD)

I made an ODL and am editing it to hopefully suit my needs but am having a time satisfying the MIDL compiler with respect to the member function. I am finding
not very much info when I google for it and all attempts to define the function produce:

error MIDL2349 : invalid member : MidiOutFromMaster [ Library 'Cbcrshimcontrol'

Here is my little ODL file so far.

C#

// oditest.odl : type library source for oditest.dll
// This file will be processed by the MIDL compiler to produce the
// type library (oditest.tlb).
[ uuid(F3120704-CF1B-4B96-AF60-B8610FEC4783), version(1.0) ] library Cbcrshimcontrol
{
    importlib("stdole32.tlb");
    importlib("stdole2.tlb");
    static void MidiOutFromMaster(DWORD);
};

Thank you.

:Ron

Posted 16-Jun-11 12:28pm

Ron Anders

Updated 16-Jun-11 12:29pm

v2

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barneyman · Accepted Answer · 2011-06-16T14:19:00

you have to declare the interface that exposes that method (MidiOut...), and then include that interface in the library, within a coclass that exposes it

something like ...

MIDL

[
    object,
    uuid(<your itf GUID in here>),
    oleautomation,
    nonextensible,
    pointer_default(unique)
]
interface IyourMIDIinterface : IUnknown{

HRESULT MidiOutFromMaster([in] DWORD);

};
[
    uuid(F3120704-CF1B-4B96-AF60-B8610FEC4783),
    version(1.0),
]
library CbcrshimcontrolLib
{
    importlib("stdole2.tlb");

    [
        uuid(<your control lib guid>)
    ]
    coclass Cbcrshimcontrol
    {
        [default] interface IyourMIDIinterface;
    };

However, this should all be redundant - if you've got the source to the slave COM object, and it's a real COM object (i.e. created via an MFC or ATL wizard) you should have a type library kicking around somewhere ...

How did you create the slave com object?