Struct windows::core::IUnknown

#[repr(transparent)]
pub struct IUnknown(_);

All COM interfaces (and thus WinRT classes and interfaces) implement IUnknown under the hood to provide reference-counted lifetime management as well as the ability to query for additional interfaces that the object may implement.

Trait Implementations

impl Clone for IUnknown

fn clone(&self) -> Self

Returns a copy of the value.

const 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 Interface for IUnknown

const IID: GUID = _

A unique identifier representing this interface.

fn cast<T: Interface>(&self) -> Result<T>

Attempts to cast the current interface to another interface using QueryInterface.

fn downgrade(&self) -> Result<Weak<Self>>

Attempts to create a Weak reference to this object.

impl PartialEq<IUnknown> for IUnknown

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Vtable for IUnknown

type Vtable = IUnknown_Vtbl

fn as_raw(&self) -> *mut c_void

Returns the raw COM interface pointer. The resulting pointer continues to be owned by the Interface implementation.

fn into_raw(self) -> *mut c_void

Returns the raw COM interface pointer and releases ownership. It the caller’s responsibility to release the COM interface pointer.

unsafe fn from_raw(raw: *mut c_void) -> Self

Creates an Interface by taking ownership of the raw COM interface pointer.

unsafe fn from_raw_borrowed(raw: &*mut c_void) -> &Self

Creates an Interface that is valid so long as the raw COM interface pointer is valid.

impl Eq for IUnknown