GI.Gtk.Objects.ClosureExpression

An expression using a custom GClosure to compute the value from its parameters.

Exported types

newtype ClosureExpression

Memory-managed wrapper type.

Constructors

ClosureExpression (ManagedPtr ClosureExpression)

Instances

Eq ClosureExpression

Defined in GI.Gtk.Objects.ClosureExpression

Methods

(==) :: ClosureExpression -> ClosureExpression -> Bool

(/=) :: ClosureExpression -> ClosureExpression -> Bool

BoxedPtr ClosureExpression

Defined in GI.Gtk.Objects.ClosureExpression

Methods

boxedPtrCopy :: ClosureExpression -> IO ClosureExpression

boxedPtrFree :: ClosureExpression -> IO ()

ManagedPtrNewtype ClosureExpression

Defined in GI.Gtk.Objects.ClosureExpression

Methods

toManagedPtr :: ClosureExpression -> ManagedPtr ClosureExpression

TypedObject ClosureExpression

Defined in GI.Gtk.Objects.ClosureExpression

Methods

glibType :: IO GType

HasParentTypes ClosureExpression

Defined in GI.Gtk.Objects.ClosureExpression

type ParentTypes ClosureExpression

Defined in GI.Gtk.Objects.ClosureExpression

type ParentTypes ClosureExpression = '[Expression]

class (BoxedPtr o, TypedObject o, IsDescendantOf ClosureExpression o) => IsClosureExpression o

Type class for types which can be safely cast to ClosureExpression, for instance with toClosureExpression.

Instances

(BoxedPtr o, TypedObject o, IsDescendantOf ClosureExpression o) => IsClosureExpression o

Defined in GI.Gtk.Objects.ClosureExpression

toClosureExpression :: (MonadIO m, IsClosureExpression o) => o -> m ClosureExpression

Cast to ClosureExpression, for types for which this is known to be safe. For general casts, use castTo.

Methods

Click to display all available methods, including inherited ones

Methods

bind, evaluate, isStatic, ref, unref, watch.

Getters

getValueType.

Setters

None.

new

closureExpressionNew

Arguments

:: (HasCallStack, MonadIO m)

=> GType

valueType: the type of the value that this expression evaluates to

-> GClosure a

closure: closure to call when evaluating this expression. If closure is floating, it is adopted

-> Maybe [Expression]

params: expressions for each parameter

-> m ClosureExpression

Returns: a new GtkExpression

Creates a GtkExpression that calls closure when it is evaluated.

closure is called with the this object and the results of evaluating the params expressions.