DrawArea.line

void line(double x1, double y1, double x2, double y2, int c, int lineWidth = 1);

Argument	Default	Description
x1	(Mandatory)	The x coordinate of the first end-point of the line.
y1	(Mandatory)	The y coordinate of the first end-point of the line.
x2	(Mandatory)	The x coordinate of the second end-point of the line.
y2	(Mandatory)	The y coordinate of the second end-point of the line.
c	(Mandatory)	The color of the line.
lineWidth	1	The line width (thickness).