[ARX]如何将提取出的复线的点集变成acedSSGet “wp”项所需要的点集

liudaoshan

生手求助; 如何将提取出的复线的点集变成acedSSGet “wp””cp”项所需要的点集,不知要组成链表还是数组.,请指教.并给出一小段示例代码. 谢谢. 以下代码为什么不行? acedEntSel("\n请选共用件外形[封闭多义线]:",ent,pt)；
struct resbuf *pointlist = NULL, *eb1;
ads_name ss;
acedSSAdd(NULL, NULL, ss);
pData=acdbEntGet(ent);
for(;pData!=NULL;pData=pData->rbnext)
{
if(pData->restype == 10)
{
eb1=new resbuf;
eb1->rbnext = NULL;
eb1->restype = RTPOINT;
eb1->resval.rpoint[X] = pData->resval.rpoint[X];
eb1->resval.rpoint[Y] = pData->resval.rpoint[Y];
eb1->resval.rpoint[Z] = 0;
//acutPrintf("\n%d,%f,%f",i,pData->resval.rpoint[X],pData->resval.rpoint[Y]);
pointlist->rbnext = eb1;
}
}
//pointlist->rbnext = NULL;
//ads_point pt1, pt2, pt3, pt4;
//pt1[X] = pt1[Y] = pt1[Z] = 0.0;
//pt2[X] = pt2[Y] = 500.0; pt2[Z] = 0.0;
//pt3[X] = 1000.0; pt3[Y] = 500.0; pt3[Z] = 0.0;
//pt4[X] = 500.0; pt4[Y] = pt4[Z] = 0.0;
//pointlist = acutBuildList(RTPOINT, pt1, RTPOINT, pt2, RTPOINT, pt3, RTPOINT, pt4, 0); acedSSGet("WP", pointlist, NULL, NULL, ss);
acutRelRb(eb1);
acutRelRb(pointlist);