DOKK / manpages / debian 11 / allegro5-doc / al_set_display_flag.3alleg5.en
al_set_display_flag(3alleg5) al_set_display_flag(3alleg5)

al_set_display_flag - Allegro 5 API

#include <allegro5/allegro.h>
bool al_set_display_flag(ALLEGRO_DISPLAY *display, int flag, bool onoff)
    

Enable or disable one of the display flags. The flags are the same as for al_set_new_display_flags(3alleg5). The only flags that can be changed after creation are:

ALLEGRO_FULLSCREEN_WINDOW
ALLEGRO_FRAMELESS
ALLEGRO_MAXIMIZED

Returns true if the driver supports toggling the specified flag else false. You can use al_get_display_flags(3alleg5) to query whether the given display property actually changed.

5.0.7, 5.1.2

al_set_new_display_flags(3alleg5), al_get_display_flags(3alleg5)

Allegro reference manual