销毁ALLEGRO_BITMAP *的向量

Question

I use library Allegro5. In my class named Animation I have vector<ALLEGRO_BITMAP*> sprites . In constructor, I populate it with some bitmaps and in destructor I would like to delete it properly. However, my solutions still lead to memory leaking:

for each (ALLEGRO_BITMAP* it in sprites)
{
    al_destroy_bitmap(it);
}

for (auto it : sprites)
    delete it;

sprites.~vector();

or any other combination of those.

I really can't find out why it isn't deleting properly.

EDIT:

Now I have this and there is still a small memory leak, but in the size less then 1 MB

class Deleter
{
public:
void operator()(ALLEGRO_BITMAP* ptrToBitmap)
    {
        cout << "deleted"<<'\n';
        al_destroy_bitmap(ptrToBitmap);
    }
};

and

vector<unique_ptr<ALLEGRO_BITMAP, Deleter>> sprites;

for (int i = 0; i < 100; i++)
{
    ALLEGRO_BITMAP* temp = al_load_bitmap("Fireball1.png");
    unique_ptr<ALLEGRO_BITMAP, Deleter> uptr;
    uptr = unique_ptr<ALLEGRO_BITMAP, Deleter>(temp);

    sprites.push_back(move(uptr));
}

sprites.~vector();

Answer 1

Don't make sprites a std::vector<ALLEGRO_BITMAP*> , make it a std::vector<std::unique_ptr<ALLEGRO_BITMAP*,al_destroy_bitmap>> . That way, when the destructor of sprites is called (or when you resize it to zero), the unique_ptr destructor will free the bitmap.