Struct windows::ErrorCode [−][src]
A primitive error code value returned by most COM functions. An ErrorCode
is sometimes called an HRESULT
.
Implementations
impl ErrorCode
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pub fn is_ok(self) -> bool
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Returns true
if self
is a success code.
pub fn is_err(self) -> bool
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Returns true
if self
is a failure code.
pub fn unwrap(self)
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Asserts that self
is a success code.
This will invoke the panic!
macro if self
is a failure code and display
the HRESULT
value for diagnostics.
pub fn ok(self) -> Result<()>
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Converts the ErrorCode
to Result<()>
.
pub fn and_some<T: Interface>(self, some: Option<T>) -> Result<T>
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Returns the Option
as a Result
if the option is a Some
value, returning
a suitable error if not.
pub fn and_then<F, T>(self, op: F) -> Result<T> where
F: FnOnce() -> T,
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F: FnOnce() -> T,
Calls op
if self
is a success code, otherwise returns ErrorCode
converted to Result<T>
.
pub unsafe fn from_abi<T: Abi>(self, abi: T::Abi) -> Result<T>
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If the Result
is Ok
converts the T::Abi
into T
.
pub fn from_thread() -> Self
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Retrieves the error code stored on the calling thread.
pub const S_OK: ErrorCode
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The operation succeeded.
pub const CO_E_NOTINITIALIZED: ErrorCode
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The COM runtime has not been loaded.
pub const E_NOINTERFACE: ErrorCode
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The requested interface is not implemented.
pub const E_POINTER: ErrorCode
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A null pointer was sent or received.
Trait Implementations
impl Abi for ErrorCode
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type Abi = Self
The abi representation of the implementing type. Read more
fn abi(&self) -> Self::Abi
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fn set_abi(&mut self) -> *mut Self::Abi
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unsafe fn from_abi(abi: Self::Abi) -> Result<Self>
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impl Clone for ErrorCode
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impl Copy for ErrorCode
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impl Debug for ErrorCode
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impl Default for ErrorCode
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impl From<Error> for ErrorCode
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impl From<ErrorCode> for Error
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impl<T> From<Result<T, Error>> for ErrorCode
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impl PartialEq<ErrorCode> for ErrorCode
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impl StructuralPartialEq for ErrorCode
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Auto Trait Implementations
impl RefUnwindSafe for ErrorCode
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impl Send for ErrorCode
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impl Sync for ErrorCode
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impl Unpin for ErrorCode
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impl UnwindSafe for ErrorCode
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,