An interface for container actors
<clutter-container> is an interface implemented by
<clutter-actor>, and it provides some common API for notifying
when a child actor is added or removed, as well as the infrastructure
for accessing child properties through
Until Clutter 1.10, the
<clutter-container> interface was also
the public API for implementing container actors; this part of the
interface has been deprecated:
<clutter-container> has a default
implementation which defers to
<clutter-actor> the child addition
and removal, as well as the iteration. See the documentation of
<clutter-container-iface> for the list of virtual functions that
should be overridden.
clutter-container-iface.child-notifyvirtual function of
<clutter-container>. The default implementation will emit the
<clutter-child-meta>wrapping actor inside the container, if the
<"child-meta-type">class member is not set to ‘G_TYPE_INVALID’.
This function is only useful when adding a
<clutter-container>implementation outside of the
addvirtual function implementation.
Applications should not call this function.
<clutter-actor>) ⇒ (ret
<clutter-child-meta>which contains the data about the container specific state for actor.
<clutter-actor>that is a child of container.
<clutter-child-meta>for the actor child of container or ‘
#f’ if the specifiec actor does not exist or the container is not configured to provide