al_draw_rectangle(3) al_draw_rectangle(3)

al_draw_rectangle - Allegro 5 API

#include <allegro5/allegro_primitives.h>
void al_draw_rectangle(float x1, float y1, float x2, float y2,
   ALLEGRO_COLOR color, float thickness)

Draws an outlined rectangle.

Parameters:

x1, y1, x2, y2 - Upper left and lower right points of the rectangle
color - Color of the rectangle
thickness - Thickness of the lines, pass <= 0 to draw hairline lines

al_draw_filled_rectangle(3), al_draw_rounded_rectangle(3)

Allegro reference manual