c++ - 智能感知 : a value of type "IDeviceServer *" cannot be assigned to an entity of type "IDeviceServer *"

Question

我真的无法理解这个错误。请帮助我。代码是:

m_pIServer = new IDeviceServer(this);

声明是:

class IDeviceServer : public IOPCServer
{
  public:
    IDeviceServer( LPUNKNOWN );
  ...

IDeviceServer       *m_pIServer;

什么意思:“IDeviceServer *”类型的值不能分配给“IDeviceServer *”类型的实体？看不懂。

Answer 1

通常发生在您在泛型类/方法中重新定义类并传入旧类的对象时。