DragonFly On-Line Manual Pages
al_acknowledge_resize - Allegro 5 API
bool al_acknowledge_resize(ALLEGRO_DISPLAY *display)
When the user receives a resize event from a resizable display, if they
wish the display to be resized they must call this function to let the
graphics driver know that it can now resize the display. Returns true
Adjusts the clipping rectangle to the full size of the backbuffer.
Note that a resize event may be outdated by the time you acknowledge
it; there could be further resize events generated in the meantime.
Allegro reference manual al_acknowledge_resize(3)