Provided by: allegro5-doc_5.0.10-2_all 

NAME
al_draw_rounded_rectangle - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro_primitives.h>
void al_draw_rounded_rectangle(float x1, float y1, float x2, float y2,
float rx, float ry, ALLEGRO_COLOR color, float thickness)
DESCRIPTION
Draws an outlined rounded rectangle.
Parameters:
• x1, y1, x2, y2 - Upper left and lower right points of the rectangle
• color - Color of the rectangle
• rx, ry - The radii of the round
• thickness - Thickness of the lines, pass <= 0 to draw hairline lines
SEE ALSO
al_draw_filled_rounded_rectangle(3alleg5), al_draw_rectangle(3alleg5)
Allegro reference manual al_draw_rounded_rectangle(3alleg5)()