GObject.CClosure

Fields

Name	Type	Access	Description
callback	object	r/w	the callback function
closure	GObject.Closure	r/w	the GObject.Closure

Methods

class	marshal_BOOLEAN__BOXED_BOXED (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_BOOLEAN__FLAGS (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_STRING__OBJECT_POINTER (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__BOOLEAN (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__BOXED (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__CHAR (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__DOUBLE (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__ENUM (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__FLAGS (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__FLOAT (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__INT (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__LONG (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__OBJECT (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__PARAM (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__POINTER (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__STRING (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__UCHAR (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__UINT (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__UINT_POINTER (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__ULONG (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__VARIANT (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_VOID__VOID (closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)
class	marshal_generic (closure, return_gvalue, n_param_values, param_values, invocation_hint, marshal_data)

Details

class GObject.CClosure

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

classmethod marshal_BOOLEAN__BOXED_BOXED(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – A GObject.Closure.
• return_value (GObject.Value) – A GObject.Value to store the return value. May be None if the callback of closure doesn’t return a value.
• n_param_values (int) – The length of the param_values array.
• param_values (GObject.Value) – An array of GObject.Values holding the arguments on which to invoke the callback of closure.
• invocation_hint (object or None) – The invocation hint given as the last argument to GObject.Closure.invoke().
• marshal_data (object or None) – Additional data specified when registering the marshaller, see g_closure_set_marshal() and g_closure_set_meta_marshal()

A GObject.ClosureMarshal 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 GObject.signal_accumulator_true_handled().

classmethod marshal_BOOLEAN__FLAGS(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – a GObject.Value which can store the returned bool
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding instance and arg1
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_STRING__OBJECT_POINTER(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – a GObject.Value, which can store the returned string
• n_param_values (int) – 3
• param_values (GObject.Value) – a GObject.Value array holding instance, arg1 and arg2
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__BOOLEAN(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the bool parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__BOXED(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the GObject.GBoxed parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__CHAR(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the str parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__DOUBLE(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the float parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__ENUM(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the enumeration parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__FLAGS(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the flags parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__FLOAT(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the float parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__INT(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the int parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__LONG(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the int parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__OBJECT(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the GObject.Object parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__PARAM(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the GObject.ParamSpec parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__POINTER(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the object parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__STRING(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the str parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__UCHAR(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the #guchar parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__UINT(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the int parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__UINT_POINTER(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 3
• param_values (GObject.Value) – a GObject.Value array holding instance, arg1 and arg2
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__ULONG(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the int parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_VOID__VARIANT(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 2
• param_values (GObject.Value) – a GObject.Value array holding the instance and the GLib.Variant parameter
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

New in version 2.26.

classmethod marshal_VOID__VOID(closure, return_value, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – the GObject.Closure to which the marshaller belongs
• return_value (GObject.Value) – ignored
• n_param_values (int) – 1
• param_values (GObject.Value) – a GObject.Value array holding only the instance
• invocation_hint (object or None) – the invocation hint given as the last argument to GObject.Closure.invoke()
• marshal_data (object or None) – additional data specified when registering the marshaller

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

classmethod marshal_generic(closure, return_gvalue, n_param_values, param_values, invocation_hint, marshal_data)

Parameters:

• closure (GObject.Closure) – A GObject.Closure.
• return_gvalue (GObject.Value) – A GObject.Value to store the return value. May be None if the callback of closure doesn’t return a value.
• n_param_values (int) – The length of the param_values array.
• param_values (GObject.Value) – An array of GObject.Values holding the arguments on which to invoke the callback of closure.
• invocation_hint (object or None) – The invocation hint given as the last argument to GObject.Closure.invoke().
• marshal_data (object or None) – Additional data specified when registering the marshaller, see g_closure_set_marshal() and g_closure_set_meta_marshal()

A generic marshaller function implemented via libffi.

Normally this function is not passed explicitly to GObject.signal_new(), but used automatically by GLib when specifying a None marshaller.

New in version 2.30.