안드로이드 c++ 오픈지엘 질문입니다.

GLRectangle* rect = new GLRectangle;
rect->draw();

list<GLObject*> list;
 
GLRectangle* rect = new GLRectangle;
 
list.push_back(rect);
 
list<GLObject*> list::iterPos = list.begine();
list<GLObject*> list::iterEnd = list.end();
 
 
 
for(; iterPos != iterEnd; iterPos++) (
   ((GLObject*)(*iterPos))->draw();
}