Михаиллл
МихаилллSept. 5, 2019, 1:27 p.m.

Как в Qt создать контейнер с объектами - ссылками?

Добрый день.
Сделал такой вектор:

QVector <MoveItem> vectorMoveItem;

Отдельно создаю объекты класса:

MoveItem *item = new MoveItem();        // Создаём графический элемент

Как в вектор vectorMoveItem записать объекты item?
Так не работает:

vectorMoveItem.append(*item);
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4
R
  • Sept. 5, 2019, 1:38 p.m.
  • (edited)
  • The answer was marked as a solution.
QVector <MoveItem *> vectorMoveItem;

https://ru.wikipedia.org/wiki/%D0%A3%D0%BA%D0%B0%D0%B7%D0%B0%D1%82%D0%B5%D0%BB%D1%8C_(%D1%82%D0%B8%D0%BF_%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85)

    Михаиллл
    • Sept. 5, 2019, 1:51 p.m.

    Спасибо, так нормально зописывается.
    Но как обратится к элементу вектора?
    Так не работает:

    vectorMoveItem[3]
    
      R
      • Sept. 5, 2019, 1:59 p.m.

      зовсім читати не хочите)))

      MoveItem *item = vectorMoveItem.at(3);
      

      і раджу ознайомитись з апі

      const T &QVector::at(int i) const
      Returns the item at index position i in the vector.
      i must be a valid index position in the vector (i.e., 0 <= i < size()).
      See also value() and operator[]().
      
      T QVector::value(int i) const
      Returns the value at index position i in the vector.
      If the index i is out of bounds, the function returns a default-constructed value. If you are certain that i is within bounds, you can use at() instead, which is slightly faster.
      See also at() and operator[]().
      
      T &QVector::operator[](int i)
      Returns the item at index position i as a modifiable reference.
      i must be a valid index position in the vector (i.e., 0 <= i < size()).
      Note that using non-const operators can cause QVector to do a deep copy.
      See also at() and value().
      
        Михаиллл
        • Sept. 5, 2019, 2:13 p.m.

        Спасибо, разобрался

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