Struct windows::core::HRESULT

#[repr(transparent)]
pub struct HRESULT(pub i32);
Expand description

An error code value returned by most COM functions.

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§0: i32

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impl HRESULT

pub const fn is_ok(self) -> bool

Returns true if self is a success code.

pub const fn is_err(self) -> bool

Returns true if self is a failure code.

pub fn unwrap(self)

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<(), Error>

Converts the HRESULT to Result<()>.

pub fn map<F, T>(self, op: F) -> Result<T, Error>
where F: FnOnce() -> T,

Calls op if self is a success code, otherwise returns HRESULT converted to Result<T>.

pub fn and_then<F, T>(self, op: F) -> Result<T, Error>
where F: FnOnce() -> Result<T, Error>,

Calls op if self is a success code, otherwise returns HRESULT converted to Result<T>.

pub fn message(&self) -> String

The error message describing the error.

pub const fn from_win32(error: u32) -> HRESULT

Maps a Win32 error code to an HRESULT value.

pub const fn from_nt(error: i32) -> HRESULT

Maps an NT error code to an HRESULT value.

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impl Clone for HRESULT

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fn clone(&self) -> HRESULT

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for HRESULT

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for HRESULT

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fn default() -> HRESULT

Returns the “default value” for a type. Read more
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impl Display for HRESULT

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl From<Error> for HRESULT

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fn from(error: Error) -> HRESULT

Converts to this type from the input type.
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impl From<HRESULT> for Error

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fn from(code: HRESULT) -> Error

Converts to this type from the input type.
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impl From<NTSTATUS> for HRESULT

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fn from(value: NTSTATUS) -> Self

Converts to this type from the input type.
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impl<T> From<Result<T, Error>> for HRESULT

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fn from(result: Result<T, Error>) -> HRESULT

Converts to this type from the input type.
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impl From<WIN32_ERROR> for HRESULT

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fn from(value: WIN32_ERROR) -> Self

Converts to this type from the input type.
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impl PartialEq for HRESULT

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

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

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impl Eq for HRESULT

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impl StructuralPartialEq for HRESULT

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.