ObjectClass

The class structure for the GObject type.

// Example of implementing a singleton using a constructor.
static MySingleton *the_singleton = NULL;

static GObject*
my_singleton_constructor (GType                  type,
guint                  n_construct_params,
GObjectConstructParam *construct_params)
{
GObject *object;

if (!the_singleton)
{
object = G_OBJECT_CLASS (parent_class)->constructor (type,
n_construct_params,
construct_params);
the_singleton = MY_SINGLETON (object);
}
else
object = g_object_ref (G_OBJECT (the_singleton));

return object;
}

class ObjectClass {

protected

GObjectClass* gObjectClass;

protected

bool ownedRef;

GObjectClass* getObjectClassStruct(bool transferOwnership);

void* getStruct();

this(GObjectClass* gObjectClass, bool ownedRef);

ParamSpec findProperty(string propertyName);

void installProperties(ParamSpec[] pspecs);

void installProperty(uint propertyId, ParamSpec pspec);

ParamSpec[] listProperties();

void overrideProperty(uint propertyId, string name);

}

Constructors

this this(GObjectClass* gObjectClass, bool ownedRef): Sets our main struct and passes it to the parent class.

Members

Functions

findProperty ParamSpec findProperty(string propertyName): Looks up the gobject.ParamSpec for a property of a class.
getObjectClassStruct GObjectClass* getObjectClassStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*
installProperties void installProperties(ParamSpec[] pspecs): Installs new properties from an array of gobject.ParamSpecs
installProperty void installProperty(uint propertyId, ParamSpec pspec): Installs a new property.
listProperties ParamSpec[] listProperties(): Get an array of gobject.ParamSpec* for all properties of a class.
overrideProperty void overrideProperty(uint propertyId, string name): Registers property_id as referring to a property with the name name in a parent class or in an interface implemented by oclass. This allows this class to "override" a property implementation in a parent class or to provide the implementation of a property from an interface.

Variables

gObjectClass GObjectClass* gObjectClass;: the main Gtk struct

gobject ObjectClass classes

ObjectClass