exswitch(3alleg4)                Allegro manual                exswitch(3alleg4)

       exswitch - Controlling the console switch mode for background running.
       Allegro game programming library.

       #include <allegro.h>

       Example exswitch

       This program shows how to control the console switching mode, and let
       your program run in the background. These functions don't apply to every
       platform and driver, for example you can't control the switching mode
       from a DOS program.

       Yes, I know the fractal drawing is very slow: that's the point!  This is
       so you can easily check whether it goes on working in the background
       after you switch away from the app.

       Depending on the type of selected switching mode, you will see whether
       the contents of the screen are preserved or not.

       BITMAP(3alleg4), END_OF_FUNCTION(3alleg4), END_OF_MAIN(3alleg4),
       LOCK_FUNCTION(3alleg4), LOCK_VARIABLE(3alleg4), PALETTE(3alleg4),
       SCREEN_H(3alleg4), SCREEN_W(3alleg4), acquire_bitmap(3alleg4),
       acquire_screen(3alleg4), allegro_error(3alleg4), allegro_exit(3alleg4),
       allegro_init(3alleg4), allegro_message(3alleg4),
       bitmap_color_depth(3alleg4), blit(3alleg4), clear_to_color(3alleg4),
       create_sub_bitmap(3alleg4), desktop_palette(3alleg4),
       destroy_bitmap(3alleg4), font(3alleg4), get_display_switch_mode(3alleg4),
       gfx_mode_select_ex(3alleg4), install_int(3alleg4),
       install_keyboard(3alleg4), install_mouse(3alleg4),
       install_timer(3alleg4), keypressed(3alleg4), makecol(3alleg4),
       palette_color(3alleg4), putpixel(3alleg4), readkey(3alleg4),
       rectfill(3alleg4), release_bitmap(3alleg4), release_screen(3alleg4),
       screen(3alleg4), set_color_depth(3alleg4),
       set_display_switch_callback(3alleg4), set_display_switch_mode(3alleg4),
       set_gfx_mode(3alleg4), set_palette(3alleg4), textout_centre_ex(3alleg4),

Allegro                           version 4.4.3                exswitch(3alleg4)