Function Macro
GObjectset_object
since: 2.44
Declaration [src]
#define g_set_object (
object_ptr,
new_object
)
Description [src]
Updates a GObject pointer to refer to new_object.
It increments the reference count of new_object (if non-NULL), decrements
the reference count of the current value of object_ptr (if non-NULL), and
assigns new_object to object_ptr. The assignment is not atomic.
object_ptr must not be NULL, but can point to a NULL value.
A macro is also included that allows this function to be used without pointer casts. The function itself is static inline, so its address may vary between compilation units.
One convenient usage of this function is in implementing property setters:
void
foo_set_bar (Foo *foo,
Bar *new_bar)
{
g_return_if_fail (IS_FOO (foo));
g_return_if_fail (new_bar == NULL || IS_BAR (new_bar));
if (g_set_object (&foo->bar, new_bar))
g_object_notify (foo, "bar");
}
Available since: 2.44
This function is not directly available to language bindings.