/
agile_reference.rs
30 lines (25 loc) · 1.14 KB
/
agile_reference.rs
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use super::*;
use bindings::*;
use core::marker::PhantomData;
/// A type representing an agile reference to a COM/WinRT object.
#[repr(transparent)]
#[derive(Clone, PartialEq, Eq)]
pub struct AgileReference<T>(IAgileReference, PhantomData<T>);
impl<T: Interface> AgileReference<T> {
/// Creates an agile reference to the object.
pub fn new(object: &T) -> Result<Self> {
let unknown: &IUnknown = unsafe { std::mem::transmute(object) };
unsafe { RoGetAgileReference(AGILEREFERENCE_DEFAULT, &T::IID, unknown).map(|reference| Self(reference, Default::default())) }
}
/// Retrieves a proxy to the target of the `AgileReference` object that may safely be used within any thread context in which get is called.
pub fn resolve(&self) -> Result<T> {
unsafe { self.0.Resolve() }
}
}
unsafe impl<T: Interface> Send for AgileReference<T> {}
unsafe impl<T: Interface> Sync for AgileReference<T> {}
impl<T> std::fmt::Debug for AgileReference<T> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "AgileReference({:?})", <&IAgileReference as Into<&IUnknown>>::into(&self.0))
}
}