c++ - 为什么复制时会调用析构函数？

Question

我有一个严重的问题，我使用默认构造函数来初始化对象，并使用带有参数的构造函数来复制 DirectX 接口(interface)。

SpriteBatch spriteBatch; //Creating an Object to SpriteBatch Class

//This Function Gets Called when Device is Created with Parameter to Device
void LoadContent(GraphicDevice graphicDevice) 
{
  /*Here is the Problem, When it Assigns to the Object it creates a Temp Object and
  Destructor gets called where I free everything, I can't use the GraphicDevice after
  this.*/

  spriteBatch = SpriteBatch(graphicDevice); 
}


//SpriteBatch Class

class SpriteBatch
{
  GraphicDevice graphicDevice;

  public:
    SpriteBatch();
    SpriteBatch(GraphicDevice graphicDevice);
    ~SpriteBatch();
}

SpriteBatch::SpriteBatch()
{
}

SpriteBatch::SpriteBatch(GraphicDevice graphicDevice)
{
  this->graphicDevice = graphicDevice;
}

SpriteBatch::~SpriteBatch()
{
   graphicDevice-Release();
}

我希望析构函数在我的程序结束时被调用，而不是在我复制两个对象时被调用。我尝试过重载赋值运算符和复制构造函数，但这对我没有帮助。有办法吗？

Answer 1

为graphicDevice 使用shared_ptr，这样它只会在引用计数达到零时才被释放。你不应该首先在析构函数中处理这个问题。