Signals.overrideClassHandler

Overrides the class closure (i.e. the default handler) for the given signal for emissions on instances of @instance_type with callback @class_handler. @instance_type must be derived from the type to which the signal belongs.

See g_signal_chain_from_overridden() and g_signal_chain_from_overridden_handler() for how to chain up to the parent class closure from inside the overridden one.

struct Signals
static
void
overrideClassHandler

Parameters

signalName string

the name for the signal

instanceType GType

the instance type on which to override the class handler for the signal.

classHandler GCallback

the handler.

Meta

Since

2.18