Trait com::interfaces::iunknown::IUnknown

pub trait IUnknown {
    unsafe fn query_interface(
        &self, 
        riid: *const GUID, 
        ppv: *mut *mut c_void
    ) -> HRESULT;
    unsafe fn add_ref(&self) -> u32;
    unsafe fn release(&self) -> u32;
}

IUnknown COM interface

Required methods

unsafe fn query_interface(
    &self,
    riid: *const GUID,
    ppv: *mut *mut c_void
) -> HRESULT

The COM QueryInterface Method

This method normally should not be called directly. Interfaces that implement IUnknown also implement IUnknown::get_interface which is a safe wrapper around IUnknown::query_interface.

unsafe fn add_ref(&self) -> u32

The COM AddRef Method

This method normally should not be called directly. This method is used by ComRc to implement the reference counting mechanism.

unsafe fn release(&self) -> u32

The COM Release Method

This method normally should not be called directly. This method is used by ComRc to implement the reference counting mechanism.

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Trait Implementations

impl ComInterface for dyn IUnknown

type VTable = IUnknownVTable

A COM compatible V-Table

type Super = dyn IUnknown

The interface that this interface inherits from

const IID: IID

The associated id for this interface

fn is_iid_in_inheritance_chain(riid: &IID) -> bool

Check whether a given IID is in the inheritance hierarchy of this interface

impl<C: IUnknown> ProductionComInterface<C> for dyn IUnknown

fn vtable<O: Offset>() -> Self::VTable

Get the vtable for a particular COM interface

Implementors

impl<T: IUnknown + ComInterface + ?Sized> IUnknown for ComPtr<T>

unsafe fn query_interface(
    &self,
    riid: *const GUID,
    ppv: *mut *mut c_void
) -> HRESULT

unsafe fn add_ref(&self) -> u32

unsafe fn release(&self) -> u32

impl<T: IUnknown + ComInterface + ?Sized> IUnknown for ComRc<T>

unsafe fn query_interface(
    &self,
    riid: *const GUID,
    ppv: *mut *mut c_void
) -> HRESULT

unsafe fn add_ref(&self) -> u32

unsafe fn release(&self) -> u32

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