回调函数实现类似QT中信号机制

1. 定义回调接口类：

class UIcallBack
{
public:
    virtual void onAppActivated() = 0;
    virtual void onShowMore() = 0;
};

class AppManager : public UIcallBack
{
public:
    AppManager();

    UIManager uiManager;
……

uiManager.setCallBack(this);

void AppManager::onAppActivated()
{

}

void AppManager::onShowMore()
{
    _D("callback onshowMore\n");
}

class UIManager 
{
public:
    UIManager();
    ~UIManager();

    void setCallBack(UIcallBack *pcallBack)
    {
        m_pcallBack ＝ pcallBack；
    }

    UIcallBack *m_pcallBack;
};

m_pcallBack->onShowMore();

回调函数实现类似QT中信号机制

原文：http://blog.csdn.net/liukang325/article/details/45742675