static bool Place( Vector &canvasVector, const typename Content<_T>::Vector &contentVector, typename Content<_T>::Vector &remainder ) {
typename Content<_T>::Vector todo = contentVector;
for( typename Vector::iterator itor = canvasVector.begin(); itor != canvasVector.end(); itor++ ) {
Canvas <_T> &canvas = *itor;
remainder.clear();
canvas.Place(todo, remainder);
todo = remainder;
}
if(remainder.size()==0)
return true;
return false;
}
bool HasContent() const {
return ( contentVector.size() > 0) ;
}