Struct IUnknown 

pub struct IUnknown(/* private fields */);

Base interface for all COM interfaces.

All COM interfaces (and thus WinRT classes and interfaces) implement IUnknown 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 duplicate 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.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl Eq for IUnknown

impl From<&IInspectable> for &IUnknown

fn from(value: &IInspectable) -> Self

Converts to this type from the input type.

impl From<IInspectable> for IUnknown

fn from(value: IInspectable) -> Self

Converts to this type from the input type.

impl Interface for IUnknown

const IID: GUID

The GUID associated with the interface.

fn as_raw(&self) -> *mut c_void

Returns the borrowed COM interface pointer.

fn into_raw(self) -> *mut c_void

Transfers ownership of the COM interface pointer to the caller.

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

Takes ownership of a COM interface pointer.

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

Borrows a COM interface pointer.

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

Queries the object for another interface.

fn cast_to_any<T>(&self) -> Result<&dyn Any>

where T: ComObjectInner, T::Outer: Any + 'static + IUnknownImpl<Impl = T>,

Returns the generated outer Rust implementation as [&dyn Any].

fn is_object<T>(&self) -> bool

where T: ComObjectInner, T::Outer: Any + 'static + IUnknownImpl<Impl = T>,

Returns true if the given COM interface refers to an implementation of T.

fn cast_object_ref<T>(&self) -> Result<&T::Outer>

where T: ComObjectInner, T::Outer: Any + 'static + IUnknownImpl<Impl = T>,

Returns a borrowed reference to the generated outer Rust implementation.

fn cast_object<T>(&self) -> Result<ComObject<T>>

where T: ComObjectInner, T::Outer: Any + 'static + IUnknownImpl<Impl = T>,

Returns an owned reference to the generated outer Rust implementation.

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

Attempts to create a Weak reference to this object.

unsafe fn query(&self, iid: *const GUID, interface: *mut *mut c_void) -> HRESULT

Calls QueryInterface.

fn to_ref(&self) -> InterfaceRef<'_, Self>

Borrows this interface without changing its reference count.

impl PartialEq for IUnknown

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

Equality operator ==.

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

Inequality operator !=.