Function
GObjectsignal_new_class_handler
Declaration
guint
g_signal_new_class_handler (
const gchar* signal_name,
GType itype,
GSignalFlags signal_flags,
GCallback class_handler,
GSignalAccumulator accumulator,
gpointer accu_data,
GSignalCMarshaller c_marshaller,
GType return_type,
guint n_params,
...
)
Description
Creates a new signal. (This is usually done in the class initializer.)
This is a variant of g_signal_new()
that takes a C callback instead
of a class offset for the signal’s class handler. This function
doesn’t need a function pointer exposed in the class structure of
an object definition, instead the function pointer is passed
directly and can be overridden by derived classes with
g_signal_override_class_closure()
or
g_signal_override_class_handler()and chained to with
g_signal_chain_from_overridden()
or g_signal_chain_from_overridden_handler().
See g_signal_new()
for information about signal names.
If c_marshaller is NULL
, g_cclosure_marshal_generic()
will be used as
the marshaller for this signal.
Available since: | 2.18 |
This function is not directly available to language bindings |
Parameters
signal_name |
const gchar* |
The name for the signal. |
|
The data is owned by the caller of the function. | |
The value is a NUL terminated UTF-8 string. | |
itype |
GType |
The type this signal pertains to. It will also pertain to types which are derived from this type. |
|
signal_flags |
GSignalFlags |
A combination of |
|
class_handler |
GCallback |
A |
|
The argument can be NULL . | |
accumulator |
GSignalAccumulator |
The accumulator for this signal; may be |
|
The argument can be NULL . | |
accu_data |
gpointer |
User data for the |
|
The argument can be NULL . | |
The data is owned by the caller of the function. | |
c_marshaller |
GSignalCMarshaller |
The function to translate arrays of parameter
values to signal emissions into C language callback invocations or |
|
The argument can be NULL . | |
return_type |
GType |
The type of return value, or |
|
n_params |
guint |
The number of parameter types to follow. |
|
... |
|
A list of types, one for each parameter. |