draw() ccDrawSolidPoly not smooth ??

Hi this is my first post on this forum i was a Libgdx developer but moved to Cocos2d-x having a prob. in smoothing,anti aliasing the Polygon made for Box2D…
&imginfo is struct and poly is Vector other are count and color…
ccDrawSolidPoly(&imgInfo~~>poly[0], imgInfo~~>numPoints, imgInfo->color);

the prob. is not giving me a smooth look on windows 7 i am testing it in Visual Studio

can anybody help me…

Thanks

EDIT: in box2d editor vertices are smooth so it’s not vertices Prob.