Added example showing off the line styles.
Added example of using brush styles.
Added example demonstrating filled shapes.
Added example demonstrating line functions.
Added missing polygon example.
Added example of polygon winding.

Also moved the body of the filled shapes paint message back to the
window function.
Added example to illustrate how the various drawing modes change how lines are drawn.
Added example showing origin change.

Changes the origin point of the window.
Added example for showing mapping modes.