Copyright	Will Thompson Iñaki García Etxebarria and Jonas Platte
License	LGPL-2.1
Maintainer	Iñaki García Etxebarria
Safe Haskell	Safe-Inferred
Language	Haskell2010

GI.Gtk.Objects.ObjectExpression

Contents

Exported types
Methods
- getObject
- new

Description

No description available in the introspection data.

Synopsis

newtype ObjectExpression = ObjectExpression (ManagedPtr ObjectExpression)
class (BoxedPtr o, TypedObject o, IsDescendantOf ObjectExpression o) => IsObjectExpression o
toObjectExpression :: (MonadIO m, IsObjectExpression o) => o -> m ObjectExpression
objectExpressionGetObject :: (HasCallStack, MonadIO m, IsObjectExpression a) => a -> m (Maybe Object)
objectExpressionNew :: (HasCallStack, MonadIO m, IsObject a) => a -> m Expression

Exported types

newtype ObjectExpression Source #

Memory-managed wrapper type.

Constructors

ObjectExpression (ManagedPtr ObjectExpression)

Instances

Instances details

Eq ObjectExpression Source #
Instance details Defined in GI.Gtk.Objects.ObjectExpression Methods (==) :: ObjectExpression -> ObjectExpression -> Bool # (/=) :: ObjectExpression -> ObjectExpression -> Bool #
BoxedPtr ObjectExpression Source #
Instance details Defined in GI.Gtk.Objects.ObjectExpression Methods boxedPtrCopy :: ObjectExpression -> IO ObjectExpression boxedPtrFree :: ObjectExpression -> IO ()
ManagedPtrNewtype ObjectExpression Source #
Instance details Defined in GI.Gtk.Objects.ObjectExpression Methods toManagedPtr :: ObjectExpression -> ManagedPtr ObjectExpression
TypedObject ObjectExpression Source #
Instance details Defined in GI.Gtk.Objects.ObjectExpression Methods glibType :: IO GType
HasParentTypes ObjectExpression Source #
Instance details Defined in GI.Gtk.Objects.ObjectExpression
type ParentTypes ObjectExpression Source #
Instance details Defined in GI.Gtk.Objects.ObjectExpression type ParentTypes ObjectExpression = '[Expression]

class (BoxedPtr o, TypedObject o, IsDescendantOf ObjectExpression o) => IsObjectExpression o Source #

Type class for types which can be safely cast to ObjectExpression, for instance with toObjectExpression.

Instances

Instances details

(BoxedPtr o, TypedObject o, IsDescendantOf ObjectExpression o) => IsObjectExpression o Source #
Instance details Defined in GI.Gtk.Objects.ObjectExpression

toObjectExpression :: (MonadIO m, IsObjectExpression o) => o -> m ObjectExpression Source #

Cast to ObjectExpression, 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

Expand

Methods

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

Getters

getObject, getValueType.

Setters

None.

getObject

objectExpressionGetObject Source #

Arguments

:: (HasCallStack, MonadIO m, IsObjectExpression a)
=> a	`expression`: an object `Expression`
-> m (Maybe Object)	Returns: the object, or `Nothing`

Gets the object that the expression evaluates to.

new

objectExpressionNew Source #

Arguments

:: (HasCallStack, MonadIO m, IsObject a)
=> a	`object`: object to watch
-> m Expression	Returns: a new `Expression`

Creates an expression evaluating to the given object with a weak reference. Once the object is disposed, it will fail to evaluate. This expression is meant to break reference cycles.

If you want to keep a reference to object, use gtk_constant_expression_new().