實現派生類構造函數時出錯：“沒有重載函數實例與指定類型匹配

Question

以下源旨在創建一個抽象基類（SubsystemClass）和一個派生的最終類（DisplaySubsystemClass）。 派生類的構造函數的實現失敗，錯誤“沒有重載函數的實例”DisplaySubsystemClass :: DisplaySubsystemClass“匹配指定的類型”。 我很困惑。

SubsystemClass.hpp

#ifndef SUBSYSTEMCLASS_HPP
#define SUBSYSTEMCLASS_HPP

#include <memory>
#include "DriverClass.hpp"

class SubsystemClass 
{
protected:
    std::shared_ptr<DriverClass> _driver;
public:
    virtual ~SubsystemClass();
    enum DriverCatalog;
};

#endif

DisplaySubsystemClass.hpp

#ifndef DISPLAYSUBSYSTEMCLASS_HPP
#define DISPLAYSUBSYSTEMCLASS_HPP

#include <memory>
#include "../SubsystemClass.hpp"
#include "DisplayDriverClass.hpp"

class DisplaySubsystemClass final : public SubsystemClass
{
private:
    std::shared_ptr<DisplayDriverClass> _driver;
public:
    DisplaySubsystemClass(DisplaySubsystemClass::DriverCatalog driverCatalogItem);
    ~DisplaySubsystemClass();
    enum DriverCatalog {
        DISPLAY_DRIVER_CONSOLE,
        DISPLAY_DRIVER_CURSES,
        DISPLAY_DRIVER_SFML,
        DISPLAY_DRIVER_OPENGL
    };
};

#endif

DisplaySubsystemClass.cpp

#include <memory>

#include "DisplaySubsystemClass.hpp"
#include "SFMLDisplayDriverClass.hpp"
DisplaySubsystemClass::DisplaySubsystemClass(DisplaySubsystemClass::DriverCatalog driverCatalogItem)
{
}

DisplaySubsystemClass::~DisplaySubsystemClass()
{
}

Answer 1

枚舉應在構造函數中用作參數類型之前聲明。