on package:haskell-gi-base

on :: forall object info m . (GObject object, MonadIO m, SignalInfo info) => object -> SignalProxy object info -> ((?self :: object) => HaskellCallbackType info) -> m SignalHandlerId
haskell-gi-base Data.GI.Base Data.GI.Base.Signals
Connect a signal to a signal handler.
On :: (GObject obj, SignalInfo info) => SignalProxy obj info -> ((?self :: obj) => HaskellCallbackType info) -> AttrOp obj tag
haskell-gi-base Data.GI.Base Data.GI.Base.Attributes Data.GI.Base.ShortPrelude
Connect the given signal to a signal handler.
onException :: IO a -> IO b -> IO a
haskell-gi-base Data.GI.Base.ShortPrelude
Like finally, but only performs the final action if there was an exception raised by the computation.
AttrConstruct :: AttrOpTag
haskell-gi-base Data.GI.Base.Attributes
It is possible to set the value of the attribute in new.
type AttrConstructC info obj attr value = (HasAttributeList obj, info ~ ResolveAttribute attr obj, AttrInfo info, AttrBaseTypeConstraint info obj, AttrOpAllowed 'AttrConstruct info obj, (AttrSetTypeConstraint info) value)
haskell-gi-base Data.GI.Base.Attributes
Constraint on a obj/value pair so that new works on values of type value.
attrConstruct :: (AttrInfo info, AttrBaseTypeConstraint info o, AttrSetTypeConstraint info b) => b -> IO (GValueConstruct o)
haskell-gi-base Data.GI.Base.Attributes
Build a GValue representing the attribute.
attrConstruct :: (AttrInfo info, CheckNotElem 'AttrConstruct (AttrAllowedOps info) (ConstructNotProvidedError info)) => b -> IO (GValueConstruct o)
haskell-gi-base Data.GI.Base.Attributes
Build a GValue representing the attribute.
module Data.GI.Base.BasicConversions
haskell-gi-base
module Data.GI.Base.Constructible
haskell-gi-base
Constructible types are those for which new is defined. Often these are GObjects, but it is possible to construct new (zero-initialized) structures and unions too.
class Constructible a (tag :: AttrOpTag)
haskell-gi-base Data.GI.Base.Constructible
Constructible types, i.e. those which can be allocated by new.
constructGObject :: forall o m . (GObject o, MonadIO m) => (ManagedPtr o -> o) -> [AttrOp o 'AttrConstruct] -> m o
haskell-gi-base Data.GI.Base.GObject
Construct a GObject given the constructor and a list of settable attributes. See new for a more general version.
GParamConstruct :: GParamFlag
haskell-gi-base Data.GI.Base.GParamSpec
the parameter will be set upon object construction
GParamConstructOnly :: GParamFlag
haskell-gi-base Data.GI.Base.GParamSpec
the parameter can only be set upon object construction
gtypeLong :: GType
haskell-gi-base Data.GI.Base.GType
GType for glong.
gtypeULong :: GType
haskell-gi-base Data.GI.Base.GType
GType for gulong.
data GValueConstruct o
haskell-gi-base Data.GI.Base.GValue
A type holding a GValue with an associated label. It is parameterized by a phantom type encoding the target type for the GValue (useful when constructing properties).
GValueConstruct :: String -> GValue -> GValueConstruct o
haskell-gi-base Data.GI.Base.GValue
type family MethodResolutionFailed (method :: Symbol) (o :: Type)
haskell-gi-base Data.GI.Base.Overloading
Returned when the method is not found, hopefully making the resulting error messages somewhat clearer.
constructObjectPropertyBool :: String -> Bool -> IO (GValueConstruct o)
haskell-gi-base Data.GI.Base.Properties
constructObjectPropertyBoxed :: forall a o . GBoxed a => String -> Maybe a -> IO (GValueConstruct o)
haskell-gi-base Data.GI.Base.Properties
constructObjectPropertyByteArray :: String -> Maybe ByteString -> IO (GValueConstruct o)
haskell-gi-base Data.GI.Base.Properties
constructObjectPropertyCallback :: String -> FunPtr b -> IO (GValueConstruct o)
haskell-gi-base Data.GI.Base.Properties
constructObjectPropertyClosure :: String -> Maybe (GClosure a) -> IO (GValueConstruct o)
haskell-gi-base Data.GI.Base.Properties
constructObjectPropertyDouble :: String -> Double -> IO (GValueConstruct o)
haskell-gi-base Data.GI.Base.Properties
constructObjectPropertyEnum :: forall a o . (Enum a, BoxedEnum a) => String -> a -> IO (GValueConstruct o)
haskell-gi-base Data.GI.Base.Properties