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 the Clone implementation of interfaces 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 the Drop implementation of interfaces 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

impl PartialEq<IUnknown> for IUnknown

fn eq(&self, other: &IUnknown) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &IUnknown) -> bool

This method tests for !=.

impl Eq for IUnknown

impl StructuralEq for IUnknown

impl StructuralPartialEq for IUnknown