在c ++中的类名后使用冒号 [英] Use of colon after class name in c++

问题描述

这是从blackberry 10 helloworld程序中提取的头文件。

This is a header file extracted from a blackberry 10 helloworld program.

#ifndef ApplicationUI_HPP_
#define ApplicationUI_HPP_

#include <QObject>

namespace bb
{
    namespace cascades
    {
        class Application;
        class LocaleHandler;
    }
}

class QTranslator;

/*!
 * @brief Application object
 *
 *
 */

class ApplicationUI : public QObject
{
    Q_OBJECT
public:
    ApplicationUI(bb::cascades::Application *app);
    virtual ~ApplicationUI() { }
private slots:
    void onSystemLanguageChanged();
private:
    QTranslator* m_pTranslator;
    bb::cascades::LocaleHandler* m_pLocaleHandler;
};

#endif /* ApplicationUI_HPP_ */

class ApplicationUI : public QObject

这意味着什么？

推荐答案

code> ApplicationUI 从类 QObject 继承所有方法和成员变量。使用 public 意味着 QObject 的公共方法和成员在 ApplicationUI 。

It means that ApplicationUI inherits all methods and member variables from the class QObject. The use of public means that the public methods and members of QObject are also public in ApplicationUI.

这篇关于在c ++中的类名后使用冒号的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！