al_resize_display
bool al_resize_display(ALLEGRO_DISPLAY *display, int width, int height)
Resize the display. Returns true on success, or false on error. This works on both fullscreen and windowed displays, regardless of the ALLEGRO_RESIZABLE flag.
Adjusts the clipping rectangle to the full size of the backbuffer.
See also: al_acknowledge_resize
Examples: ex_fs_resize, ex_fs_window, ex_resize
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