Highlighting lwpolyline segments

AcDbObjectId objId;

int marker;

 

ads_name sset;

if(RTNORM != acedSSGet(L"_:S", NULL, NULL, NULL, sset))

{

    acutPrintf(L"\nSelection failed :(");

    return;

}

 

resbuf *rb = NULL;

if (RTNORM != acedSSNameX(&rb, sset, 0))

{

    acedSSFree(sset);

    return;

}

 

struct resbuf *pTemp;

int i;

for (i=1, pTemp = rb;i<3;i++, pTemp = pTemp->rbnext)

    { ; }

 

ads_name ename;

ads_name_set(pTemp->resval.rlname, ename);

 

// Move on to the 4th list element which is the GsMarker

//

pTemp = pTemp->rbnext;

marker = pTemp->resval.rint;

 

acutRelRb(rb);

 

Acad::ErrorStatus es;

 

es = acdbGetObjectId(objId, ename);

if(es != Acad::eOk)

    return;

 

AcDbEntity *pEnt;

es = acdbOpenAcDbEntity(pEnt, objId, AcDb::kForRead);

if(es != Acad::eOk)

    return;

 

// Get the subentity ID for the edge picked

//

AcGePoint3d pickpnt;

AcGeMatrix3d xform;

int numIds;

AcDbFullSubentPath *subentIds;

es = pEnt->getSubentPathsAtGsMarker(

                                        AcDb::kEdgeSubentType,

                                        marker,

                                        pickpnt,

                                        xform,

                                        numIds,

                                        subentIds

                                    );

if(es != Acad::eOk)

    return;

 

// At this point the subentIds variable contains the

// address of an array of AcDbFullSubentPath objects.

// The array should be one element long, so the picked

 

// edge’s AcDbFullSubentPath is in subentIds[0]

 

// For objects with no edges (such as a sphere) the

// code to highlight an edge is meaningless and must

// be skipped.

//

if (numIds > 0)

{

    // Highlight the picked edge.

    pEnt->highlight(subentIds[0]);

    // OR

    // Unhighlight the picked edge.

    //pEnt->unhighlight(subentIds[0]);

 

}

delete []subentIds;

 

pEnt->close();