Provided by: allegro5-doc_5.0.11-2_all 

NAME
al_get_mixer_attached - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro_audio.h>
bool al_get_mixer_attached(const ALLEGRO_MIXER *mixer)
DESCRIPTION
Return true if the mixer is attached to something.
SEE ALSO
al_attach_sample_instance_to_mixer(3alleg5), al_attach_audio_stream_to_mixer(3alleg5),
al_attach_mixer_to_mixer(3alleg5), al_detach_mixer(3alleg5)
al_get_mixer_attached(3a... Allegro reference manual()