Trait glib::value::FromValue

pub unsafe trait FromValue<'a>: Sized {
    type Checker: ValueTypeChecker;
    unsafe fn from_value(value: &'a Value) -> Self;
}

Trait to retrieve the contained value from a Value.

Usually this would not be used directly but from the get function on a Value

Associated Types

type Checker: ValueTypeChecker

Value type checker.

Required methods

unsafe fn from_value(value: &'a Value) -> Self

Get the contained value from a Value.

Safety

Self::Checker::check() must be called first and must not fail.

Implementations on Foreign Types

impl<'a> FromValue<'a> for Vec<GString>

type Checker = GenericValueTypeChecker<Self>

unsafe fn from_value(value: &'a Value) -> Self

impl<'a, T, C> FromValue<'a> for Option<T> where
    T: FromValue<'a, Checker = C> + StaticType,
    C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError>, 

Blanket implementation for all optional types.

type Checker = GenericValueTypeChecker<T>

unsafe fn from_value(value: &'a Value) -> Self

impl<'a> FromValue<'a> for &'a str

type Checker = GenericValueTypeOrNoneChecker<Self>

unsafe fn from_value(value: &'a Value) -> Self

impl<'a> FromValue<'a> for String

type Checker = GenericValueTypeOrNoneChecker<Self>

unsafe fn from_value(value: &'a Value) -> Self

impl<'a> FromValue<'a> for Vec<String>

type Checker = GenericValueTypeChecker<Self>

unsafe fn from_value(value: &'a Value) -> Self

impl<'a> FromValue<'a> for bool

type Checker = GenericValueTypeChecker<Self>

unsafe fn from_value(value: &'a Value) -> Self

impl<'a> FromValue<'a> for i8

type Checker = GenericValueTypeChecker<Self>

unsafe fn from_value(value: &'a Value) -> Self

impl<'a> FromValue<'a> for u8

type Checker = GenericValueTypeChecker<Self>

unsafe fn from_value(value: &'a Value) -> Self

impl<'a> FromValue<'a> for i32

type Checker = GenericValueTypeChecker<Self>

unsafe fn from_value(value: &'a Value) -> Self

impl<'a> FromValue<'a> for u32

type Checker = GenericValueTypeChecker<Self>

unsafe fn from_value(value: &'a Value) -> Self

impl<'a> FromValue<'a> for i64

type Checker = GenericValueTypeChecker<Self>

unsafe fn from_value(value: &'a Value) -> Self

impl<'a> FromValue<'a> for u64

type Checker = GenericValueTypeChecker<Self>

unsafe fn from_value(value: &'a Value) -> Self

impl<'a> FromValue<'a> for f32

type Checker = GenericValueTypeChecker<Self>

unsafe fn from_value(value: &'a Value) -> Self

impl<'a> FromValue<'a> for f64

type Checker = GenericValueTypeChecker<Self>

unsafe fn from_value(value: &'a Value) -> Self

Implementors

impl<'a> FromValue<'a> for BindingFlags

impl<'a> FromValue<'a> for GString

impl<'a> FromValue<'a> for IOCondition

impl<'a> FromValue<'a> for ILong

impl<'a> FromValue<'a> for ULong

impl<'a> FromValue<'a> for BoxedValue