Struct com::interfaces::IUnknown

#[repr(transparent)]pub struct IUnknown { /* fields omitted */ }

IUnknown COM interface

Implementations

impl IUnknown

pub unsafe fn QueryInterface<'a, __0: Into<Param<'a, *const GUID>>, __1: Into<Param<'a, *mut *mut c_void>>>(
    &self,
    riid: __0,
    ppv: __1
) -> HRESULT

The COM QueryInterface Method

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

pub unsafe fn AddRef(&self) -> u32

The COM AddRef Method

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

pub unsafe fn Release(&self) -> u32

The COM Release Method

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

impl IUnknown

pub fn query_interface<I: Interface>(&self) -> Option<I>

A safe version of QueryInterface.

If the backing class implements the interface I then a Some containing an ComPtr pointing to that interface will be returned otherwise None will be returned.

Trait Implementations

impl Clone for IUnknown

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for IUnknown

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Drop for IUnknown

fn drop(&mut self)

Executes the destructor for this type.

impl<'a> From<&'a IClassFactory> for &'a IUnknown

fn from(this: &'a IClassFactory) -> Self

Performs the conversion.

impl From<IClassFactory> for IUnknown

fn from(this: IClassFactory) -> Self

Performs the conversion.

impl Interface for IUnknown

type VTable = IUnknownVTable

A COM compatible V-Table

type Super = 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

fn as_iunknown(&self) -> &IUnknown

Cast the interface pointer to a pointer to IUnknown.

fn as_raw(&self) -> NonNull<NonNull<Self::VTable>>

Cast the COM interface pointer to a raw pointer