[−][src]Trait com::Interface

pub unsafe trait Interface: Sized + 'static {
    type VTable;
    type Super: Interface;

    const IID: IID;
    fn is_iid_in_inheritance_chain(riid: &IID) -> bool { ... }
    fn as_iunknown(&self) -> &IUnknown { ... }
    fn as_raw(&self) -> NonNull<NonNull<Self::VTable>> { ... }
}

A COM compliant interface pointer

Safety

The struct implementing this trait must provide a valid vtable as the associated VTable type. A vtable is valid if:

it is #[repr(C)]
the type only contains `extern "stdcall" fn" definitions

The implementor must be a transparrently equivalent to a valid interface pointer for the interface T. An interface pointer as the name suggests points to an interface. A valid interface is itself trivial castable to a *mut T::VTable. In other words, the implementing type must also be equal to *mut *const T::VTable