[cairo] Is there a function that is similar with the LineDDA function of GDI in cairo?

[xi heng]

I've  been working on an application referring to cairographic.
I am hoping to using a function that is similar with the LineDDA 
of the GDI(which provide by microsoft) in cariographics, the 
function can draw segment of line, and it can replace the simple
line with some other line styles(in other words, the line drawn by the
function can assemble some line patterns).
Does anyone has some ideas about it? or, better, can anyone tell me how
I should deal with it in order to get the effect that I just described 
above.
Any help can make this would be greatly, greatly appreciated.
                                                          xi heng
                                                          BeiJing

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