( int style, int width, string color )
The function creates a new pen and returns a handle to it. A pen is
used to draw lines and curves. For an example see
must be a color in RGB hex format, i.e. "000000" for black,
width specifies the width of the pen whereas
style must be one of the following constants:
creates a solid pen.
creates a dashed pen.
creates a dotted pen.
creates a pen with dashes and dots.
creates a pen with dashes and double dots.
creates an invisible pen.