How to get the coordinates of vertices of a surface?

[K_V]

Hello, sorry to ask this nooby question since I got no helps to figure out my problem,

Here is the point, I want to know where every vertex on a surface exactly is(their coordinates),

I've already got the handle of edges on the surface that I want,

then I used ProEdgeDataGet() to look for the data about the assigned edge. But I'm not sure what to do next,

Sorry to bother you guys, but really, please help me out with this.

Thanks in advanced!!!!!! 

[FV]

TestGeom.c in <COMMON_FILES>\protoolkit\protk_appls\pt_examples\pt_geom\TestGeom.c

[K_V]

@FV

Hey thanks for helping,

but the thing is I got a part in assembly, and I've got all handles of surfaces of the part. And now I want to look for vertices of each surface. Just like the pic right below

[FV]

you probably would want to post some code, otherwise it is quite difficult to figure out what you are having problem with...