DOKK / manpages / debian 10 / allegro5-doc / al_x_set_initial_icon.3alleg5.en
al_x_set_initial_icon(3alleg5) al_x_set_initial_icon(3alleg5)

al_x_set_initial_icon - Allegro 5 API

#include <allegro5/allegro_x.h>
bool al_x_set_initial_icon(ALLEGRO_BITMAP *bitmap)
    

On some window managers (notably Ubuntu's Unity) al_set_display_icon doesn't work and you need to use a .desktop file. But with this function you can set an icon before calling al_create_display. This works by setting the icon before XMapWindow.

5.2.3

[Unstable API]: New API.

Allegro reference manual