ParamSpec.setQdata

void setQdata(glib.types.Quark quark, void * data = null)

Sets an opaque, named pointer on a #GParamSpec. The name is specified through a #GQuark (retrieved e.g. via [glib.global.quarkFromStaticString]), and the pointer can be gotten back from the pspec with [gobject.param_spec.ParamSpec.getQdata]. Setting a previously set user data pointer, overrides (frees) the old pointer set, using null as pointer essentially removes the data stored.

Parameters

`quark`	a #GQuark, naming the user data pointer
`data`	an opaque user data pointer