Difference between stroke and fill?

What's the difference between Stroke and Fill drawing in开发者_如何学C graphics context (iPhone SDK)

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Stroke is line drawing, Fill is "colouring in" (for want of a better term).

So in the case of a shape (like a circle), the stroke is the border (circumference) and the fill is the body (interior).

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Stroke only draws stuff on the border of the path.

Fill only draws stuff in the interior of the path.