c - Glib casting macros -

gtk has casting macros allow change gtk object's type:

gtk_widget(gtktoolbox); 

glib works in similar way (as far can tell) can't find macros data types:

g_int(); // doesn't work gint(); // doesn't work // etc 

what glib casting macros? or should use (type) variable instead?

i thought whole point of these macros make less risky? or did apply gtk objects because of complex type?

gtk+ uses magic dynamic type checking , type safe casts. http://openbooks.sourceforge.net/books/wga/gtk.html#aen194 works gtk objects, not primitive types, int. use (int) var instead.