CClosure

class CClosure(*args, **kwargs)

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

Methods

class CClosure

marshal_BOOLEAN__BOXED_BOXED(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A 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 signal_accumulator_true_handled().

Parameters:

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

marshal_BOOLEAN__FLAGS(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with handlers that take a flags type as an argument and return a boolean. If you have such a signal, you will probably also need to use an accumulator, such as signal_accumulator_true_handled().

Parameters:

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

marshal_STRING__OBJECT_POINTER(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with handlers that take a Object and a pointer and produce a string. It is highly unlikely that your signal handler fits this description.

Parameters:

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

marshal_VOID__BOOLEAN(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with a single boolean argument.

Parameters:

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

marshal_VOID__BOXED(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with a single argument which is any boxed pointer type.

Parameters:

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

marshal_VOID__CHAR(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with a single character argument.

Parameters:

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

marshal_VOID__DOUBLE(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with one double-precision floating point argument.

Parameters:

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

marshal_VOID__ENUM(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with a single argument with an enumerated type.

Parameters:

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

marshal_VOID__FLAGS(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with a single argument with a flags types.

Parameters:

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

marshal_VOID__FLOAT(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with one single-precision floating point argument.

Parameters:

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

marshal_VOID__INT(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with a single integer argument.

Parameters:

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

marshal_VOID__LONG(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with with a single long integer argument.

Parameters:

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

marshal_VOID__OBJECT(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with a single Object argument.

Parameters:

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

marshal_VOID__PARAM(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with a single argument of type ParamSpec.

Parameters:

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

marshal_VOID__POINTER(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with a single raw pointer argument type.

If it is possible, it is better to use one of the more specific functions such as marshal_VOID__OBJECT() or marshal_VOID__OBJECT().

Parameters:

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

marshal_VOID__STRING(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with a single string argument.

Parameters:

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

marshal_VOID__UCHAR(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with a single unsigned character argument.

Parameters:

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

marshal_VOID__UINT(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with with a single unsigned integer argument.

Parameters:

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

marshal_VOID__UINT_POINTER(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with an unsigned int and a pointer as arguments.

Parameters:

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

marshal_VOID__ULONG(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with a single unsigned long integer argument.

Parameters:

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

marshal_VOID__VARIANT(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with a single Variant argument.

Parameters:

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

marshal_VOID__VOID(closure: Callable[[...], Any], return_value: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A ClosureMarshal function for use with signals with no arguments.

Parameters:

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

marshal_generic(closure: Callable[[...], Any], return_gvalue: Any, n_param_values: int, param_values: Any, invocation_hint: None, marshal_data: None) → None

A generic marshaller function implemented via libffi.

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

Added in version 2.30.

Parameters:

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

Fields

class CClosure

callback: The callback function

closure: The Closure