canonical name of the property specified
nick name for the property specified
description of the property specified
a #GType whose subtypes are allowed as values of the property (use %G_TYPE_NONE for any type)
flags for the property specified
Return: a newly created parameter specification
2.10
Creates a new #GParamSpecGType instance specifying a %G_TYPE_GTYPE property.
See g_param_spec_internal() for details on property names.