GI.GObject.Structs.CClosure

A CClosure is a specialization of Closure for C function callbacks.

Exported types

newtype CClosure

Memory-managed wrapper type.

Constructors

CClosure (ManagedPtr CClosure)

Instances

Eq CClosure

Defined in GI.GObject.Structs.CClosure

Methods

(==) :: CClosure -> CClosure -> Bool

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

WrappedPtr CClosure

Defined in GI.GObject.Structs.CClosure

Methods

wrappedPtrCalloc :: IO (Ptr CClosure)

wrappedPtrCopy :: CClosure -> IO CClosure

wrappedPtrFree :: Maybe (GDestroyNotify CClosure)

tag ~ 'AttrSet => Constructible CClosure tag

Defined in GI.GObject.Structs.CClosure

Methods

new :: MonadIO m => (ManagedPtr CClosure -> CClosure) -> [AttrOp CClosure tag] -> m CClosure

newZeroCClosure :: MonadIO m => m CClosure

Construct a CClosure struct initialized to zero.

noCClosure :: Maybe CClosure

A convenience alias for Nothing :: Maybe CClosure.

Methods

Overloaded methods

marshalBOOLEAN_BOXEDBOXED

cClosureMarshalBOOLEAN_BOXEDBOXED

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: A Closure.

-> GValue

returnValue: A Value to store the return value. May be Nothing if the callback of closure doesn't return a value.

-> Word32

nParamValues: The length of the paramValues array.

-> GValue

paramValues: An array of GValues holding the arguments on which to invoke the callback of closure.

-> Ptr ()

invocationHint: The invocation hint given as the last argument to closureInvoke.

-> Ptr ()

marshalData: Additional data specified when registering the marshaller, see g_closure_set_marshal() and g_closure_set_meta_marshal()

-> m ()

A GClosureMarshal function for use with signals with handlers that take two boxed pointers as arguments and return a boolean. If you have such a signal, you will probably also need to use an accumulator, such as signalAccumulatorTrueHandled.

marshalBOOLEAN_FLAGS

cClosureMarshalBOOLEAN_FLAGS

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: a Value which can store the returned Bool

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding instance and arg1

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type gboolean (*callback) (gpointer instance, gint arg1, gpointer user_data) where the gint parameter denotes a flags type.

marshalGeneric

cClosureMarshalGeneric

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: A Closure.

-> GValue

returnGvalue: A Value to store the return value. May be Nothing if the callback of closure doesn't return a value.

-> Word32

nParamValues: The length of the paramValues array.

-> GValue

paramValues: An array of GValues holding the arguments on which to invoke the callback of closure.

-> Ptr ()

invocationHint: The invocation hint given as the last argument to closureInvoke.

-> Ptr ()

marshalData: Additional data specified when registering the marshaller, see g_closure_set_marshal() and g_closure_set_meta_marshal()

-> m ()

A generic marshaller function implemented via libffi.

Normally this function is not passed explicitly to g_signal_new(), but used automatically by GLib when specifying a Nothing marshaller.

Since: 2.30

marshalSTRING_OBJECTPOINTER

cClosureMarshalSTRING_OBJECTPOINTER

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: a Value, which can store the returned string

-> Word32

nParamValues: 3

-> GValue

paramValues: a Value array holding instance, arg1 and arg2

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type gchar* (*callback) (gpointer instance, GObject *arg1, gpointer arg2, gpointer user_data).

marshalVOID_BOOLEAN

cClosureMarshalVOID_BOOLEAN

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the Bool parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, gboolean arg1, gpointer user_data).

marshalVOID_BOXED

cClosureMarshalVOID_BOXED

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the GBoxed* parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, GBoxed *arg1, gpointer user_data).

marshalVOID_CHAR

cClosureMarshalVOID_CHAR

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the gchar parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, gchar arg1, gpointer user_data).

marshalVOID_DOUBLE

cClosureMarshalVOID_DOUBLE

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the gdouble parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, gdouble arg1, gpointer user_data).

marshalVOID_ENUM

cClosureMarshalVOID_ENUM

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the enumeration parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, gint arg1, gpointer user_data) where the gint parameter denotes an enumeration type..

marshalVOID_FLAGS

cClosureMarshalVOID_FLAGS

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the flags parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, gint arg1, gpointer user_data) where the gint parameter denotes a flags type.

marshalVOID_FLOAT

cClosureMarshalVOID_FLOAT

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the gfloat parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, gfloat arg1, gpointer user_data).

marshalVOID_INT

cClosureMarshalVOID_INT

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the gint parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, gint arg1, gpointer user_data).

marshalVOID_LONG

cClosureMarshalVOID_LONG

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the glong parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, glong arg1, gpointer user_data).

marshalVOID_OBJECT

cClosureMarshalVOID_OBJECT

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the Object* parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, GObject *arg1, gpointer user_data).

marshalVOID_PARAM

cClosureMarshalVOID_PARAM

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the ParamSpec* parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, GParamSpec *arg1, gpointer user_data).

marshalVOID_POINTER

cClosureMarshalVOID_POINTER

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the gpointer parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, gpointer arg1, gpointer user_data).

marshalVOID_STRING

cClosureMarshalVOID_STRING

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the gchar* parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, const gchar *arg1, gpointer user_data).

marshalVOID_UCHAR

cClosureMarshalVOID_UCHAR

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the guchar parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, guchar arg1, gpointer user_data).

marshalVOID_UINT

cClosureMarshalVOID_UINT

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the guint parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, guint arg1, gpointer user_data).

marshalVOID_UINTPOINTER

cClosureMarshalVOID_UINTPOINTER

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 3

-> GValue

paramValues: a Value array holding instance, arg1 and arg2

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, guint arg1, gpointer arg2, gpointer user_data).

marshalVOID_ULONG

cClosureMarshalVOID_ULONG

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the gulong parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, gulong arg1, gpointer user_data).

marshalVOID_VARIANT

cClosureMarshalVOID_VARIANT

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 2

-> GValue

paramValues: a Value array holding the instance and the GVariant* parameter

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, GVariant *arg1, gpointer user_data).

Since: 2.26

marshalVOID_VOID

cClosureMarshalVOID_VOID

Arguments

:: (HasCallStack, MonadIO m)

=> GClosure a

closure: the Closure to which the marshaller belongs

-> GValue

returnValue: ignored

-> Word32

nParamValues: 1

-> GValue

paramValues: a Value array holding only the instance

-> Ptr ()

invocationHint: the invocation hint given as the last argument to closureInvoke

-> Ptr ()

marshalData: additional data specified when registering the marshaller

-> m ()

A marshaller for a CClosure with a callback of type void (*callback) (gpointer instance, gpointer user_data).

Properties

callback

the callback function

clearCClosureCallback :: MonadIO m => CClosure -> m ()

Set the value of the “callback” field to Nothing. When overloading is enabled, this is equivalent to

clear #callback

getCClosureCallback :: MonadIO m => CClosure -> m (Ptr ())

Get the value of the “callback” field. When overloading is enabled, this is equivalent to

get cClosure #callback

setCClosureCallback :: MonadIO m => CClosure -> Ptr () -> m ()

Set the value of the “callback” field. When overloading is enabled, this is equivalent to

set cClosure [ #callback := value ]

closure

the Closure

clearCClosureClosure :: MonadIO m => CClosure -> m ()

Set the value of the “closure” field to Nothing. When overloading is enabled, this is equivalent to

clear #closure

getCClosureClosure :: MonadIO m => CClosure -> m (Maybe (GClosure ()))

Get the value of the “closure” field. When overloading is enabled, this is equivalent to

get cClosure #closure

setCClosureClosure :: MonadIO m => CClosure -> Ptr (GClosure ()) -> m ()

Set the value of the “closure” field. When overloading is enabled, this is equivalent to

set cClosure [ #closure := value ]