"Clive Dixon" <clived.cutthespam@cutthespam.i2.co.uk> wrote in message
news:%23SKZ7SjJFHA.588@TK2MSFTNGP15.phx.gbl...
>I have .NET client code essentially doing the following interop, getting
>hold of an application's automation interface which has been registered in
>the ROT, and the application's object has been locked using
>CoLockObjectExternal:
>
> ApplicationClass app = new ApplicationClass();
>
> // Do something with app
>
> Marshal.ReleaseComObject(app);
>
> app = null;
>
> However I find that even though the application's reference count was
> incremented by 3 on getting the object, on releasing the RCW the reference
> count does NOT decrease. When later the application calls
> CoLockObjectExternal on the object, all those 3 references get released
> all at once along with the original reference added by the initial
> CoLockObjectExternal lock. What is going on here and why is it behaving
> like this?
>
>
>
>