Tests/FindGTK2/gobject/main.c

/* Taken from https://developer.gnome.org/gobject/stable/chapter-gobject.html */


#include <glib-object.h>


#define MAMAN_TYPE_BAR                  (maman_bar_get_type ())
#define MAMAN_BAR(obj)                  (G_TYPE_CHECK_INSTANCE_CAST ((obj), MAMAN_TYPE_BAR, MamanBar))
#define MAMAN_IS_BAR(obj)               (G_TYPE_CHECK_INSTANCE_TYPE ((obj), MAMAN_TYPE_BAR))
#define MAMAN_BAR_CLASS(klass)          (G_TYPE_CHECK_CLASS_CAST ((klass), MAMAN_TYPE_BAR, MamanBarClass))
#define MAMAN_IS_BAR_CLASS(klass)       (G_TYPE_CHECK_CLASS_TYPE ((klass), MAMAN_TYPE_BAR))
#define MAMAN_BAR_GET_CLASS(obj)        (G_TYPE_INSTANCE_GET_CLASS ((obj), MAMAN_TYPE_BAR, MamanBarClass))

typedef struct _MamanBar        MamanBar;
typedef struct _MamanBarClass   MamanBarClass;

struct _MamanBar
{
  GObject parent_instance;

  /* instance members */
};

struct _MamanBarClass
{
  GObjectClass parent_class;

  /* class members */
};

/* will create maman_bar_get_type and set maman_bar_parent_class */
G_DEFINE_TYPE (MamanBar, maman_bar, G_TYPE_OBJECT);

static GObject *
maman_bar_constructor (GType                  gtype,
                       guint                  n_properties,
                       GObjectConstructParam *properties)
{
  GObject *obj;

  {
    /* Always chain up to the parent constructor */
    obj = G_OBJECT_CLASS (maman_bar_parent_class)->constructor (gtype, n_properties, properties);
  }

  /* update the object state depending on constructor properties */

  return obj;
}

static void
maman_bar_class_init (MamanBarClass *klass)
{
  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);

  gobject_class->constructor = maman_bar_constructor;
}

static void
maman_bar_init (MamanBar *self)
{
  /* initialize the object */
}


int
main(int argc, char *argv[])
{
    MamanBar *bar = g_object_new (MAMAN_TYPE_BAR, NULL);
    g_object_unref(bar);
    return 0;
}