+void draw_rect_outline(drawing *dr, int x, int y, int w, int h, int colour)
+{
+ int x0 = x, x1 = x+w-1, y0 = y, y1 = y+h-1;
+ int coords[8];
+
+ coords[0] = x0;
+ coords[1] = y0;
+ coords[2] = x0;
+ coords[3] = y1;
+ coords[4] = x1;
+ coords[5] = y1;
+ coords[6] = x1;
+ coords[7] = y0;
+
+ draw_polygon(dr, coords, 4, -1, colour);
+}
+