Graphics.HGL.Draw.Pen

Pens, used for drawing lines.

Portability notes:

• On Win32, the pen is also used to draw a line round all the filled shapes --- so the pen color also affects how polygons, ellipses and regions are drawn.
• On Win32, the Style is ignored (i.e. treated as Solid) for pens of width greater than 1. This problem does not apply to X11.

Documentation

data Pen

data Style

The style of line drawn by a pen.

Constructors

Solid

Dash

Dot

DashDot

DashDotDot

Null

InsideFrame

createPen :: Style -> Int -> RGB -> IO Pen

Create a Pen.

deletePen :: Pen -> IO ()

Destroy a Pen created with createPen.

selectPen :: Pen -> Draw Pen

Set the Pen for subsequent drawing, returning the previous setting.

mkPen :: Style -> Int -> RGB -> (Pen -> Draw a) -> Draw a

Create a Pen locally to a drawing.