public override int DetectHandle(BaseObject op, BaseDraw bd, int x, int y, QUALIFIER qualifier)
{
if (0 != (qualifier & QUALIFIER.QUALIFIER_CTRL))
{
return(-1);
}
double4x4 mg = op.GetMg();
if (bd.PointInRange(mg * GetRTHandle(op, 0), x, y))
{
return(0); // OK
}
return(-1); // Not OK
}