threads_add_idle_full

Adds a function to be called whenever there are no higher priority events pending.

If the function returns false it is automatically removed from the list of event sources and will not be called again.

This variant of add_full calls function with the GDK lock held. It can be thought of a MT-safe version for GTK+ widgets for the following use case, where you have to worry about idle_callback running in thread A and accessing self after it has been finalized in thread B:

static gboolean
idle_callback (gpointer data)
{
	 // gdk_threads_enter(); would be needed for g_idle_add()

	 SomeWidget *self = data;
	 // do stuff with self

	 self->idle_id = 0;

	 // gdk_threads_leave(); would be needed for g_idle_add()
	 return FALSE;
}

static void
some_widget_do_stuff_later (SomeWidget *self)
{
	 self->idle_id = gdk_threads_add_idle (idle_callback, self)
	 // using g_idle_add() here would require thread protection in the callback
}

static void
some_widget_finalize (GObject *object)
{
	 SomeWidget *self = SOME_WIDGET (object);
	 if (self->idle_id)
		 g_source_remove (self->idle_id);
	 G_OBJECT_CLASS (parent_class)->finalize (object);
}

Parameters:

priority	the priority of the idle source. Typically this will be in the range between DEFAULT_IDLE and HIGH_IDLE
function	function to call
data	data to pass to function
notify	function to call when the idle is removed, or null

Returns:

the ID (greater than 0) of the event source.