CCRef.h

/****************************************************************************Copyright (c) 2010-2012 cocos2d-x.orgCopyright (c) 2013-2014 Chukong Technologieshttp://www.cocos2d-x.orgPermission is hereby granted, free of charge, to any person obtaining a copyof this software and associated documentation files (the "Software"), to dealin the Software without restriction, including without limitation the rightsto use, copy, modify, merge, publish, distribute, sublicense, and/or sellcopies of the Software, and to permit persons to whom the Software isfurnished to do so, subject to the following conditions:The above copyright notice and this permission notice shall be included inall copies or substantial portions of the Software.THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS ORIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THEAUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHERLIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS INTHE SOFTWARE.****************************************************************************/#ifndef __CCREF_H__#define __CCREF_H__#include "CCPlatformMacros.h"#include "ccConfig.h"NS_CC_BEGIN/** * @addtogroup base_nodes * @{ */class Ref;/** Interface that defines how to clone an Ref */class CC_DLL Clonable{public:/** returns a copy of the Ref */    virtual Clonable* clone() const = 0;    /**     * @js NA     * @lua NA     */virtual ~Clonable() {};    /** returns a copy of the Ref.     @deprecated Use clone() instead     */    CC_DEPRECATED_ATTRIBUTE Ref* copy() const    {        // use "clone" instead        CC_ASSERT(false);        return nullptr;    }};class CC_DLL Ref{public:    /**     * Retains the ownership.     *     * This increases the Ref's reference count.     *     * @see release, autorelease     * @js NA     */    void retain();        /**     * Release the ownership immediately.     *     * This decrements the Ref's reference count.     *     * If the reference count reaches 0 after the descrement, this Ref is     * destructed.     *     * @see retain, autorelease     * @js NA     */    void release();    /**     * Release the ownership sometime soon automatically.     *     * This descrements the Ref's reference count at the end of current     * autorelease pool block.     *     * If the reference count reaches 0 after the descrement, this Ref is     * destructed.     *     * @returns The Ref itself.     *     * @see AutoreleasePool, retain, release     * @js NA     * @lua NA     */    Ref* autorelease();    /**     * Returns the Ref's current reference count.     *     * @returns The Ref's reference count.     * @js NA     */    unsigned int getReferenceCount() const;    protected:    /**     * Constructor     *     * The Ref's reference count is 1 after construction.     * @js NA     */    Ref();    public:    /**     * @js NA     * @lua NA     */    virtual ~Ref();    protected:    /// count of references    unsigned int _referenceCount;        friend class AutoreleasePool;    #if CC_ENABLE_SCRIPT_BINDINGpublic:    /// object id, ScriptSupport need public _ID    unsigned int        _ID;    /// Lua reference id    int                 _luaID;#endif};class Node;typedef void (Ref::*SEL_CallFunc)();typedef void (Ref::*SEL_CallFuncN)(Node*);typedef void (Ref::*SEL_CallFuncND)(Node*, void*);typedef void (Ref::*SEL_CallFuncO)(Ref*);typedef void (Ref::*SEL_MenuHandler)(Ref*);typedef void (Ref::*SEL_SCHEDULE)(float);#define callfunc_selector(_SELECTOR) static_cast<cocos2d::SEL_CallFunc>(&_SELECTOR)#define callfuncN_selector(_SELECTOR) static_cast<cocos2d::SEL_CallFuncN>(&_SELECTOR)#define callfuncND_selector(_SELECTOR) static_cast<cocos2d::SEL_CallFuncND>(&_SELECTOR)#define callfuncO_selector(_SELECTOR) static_cast<cocos2d::SEL_CallFuncO>(&_SELECTOR)#define menu_selector(_SELECTOR) static_cast<cocos2d::SEL_MenuHandler>(&_SELECTOR)#define schedule_selector(_SELECTOR) static_cast<cocos2d::SEL_SCHEDULE>(&_SELECTOR)// end of base_nodes group/// @}NS_CC_END#endif // __CCREF_H__

发现 #define CC_DLL 为何？

 #define CC_DEPRECATED_ATTRIBUTE __declspec(deprecated) 

网上查了一下

#define MY_TEXT "function is deprecated"void func1(void) {}__declspec(deprecated) void func1(int) {}__declspec(deprecated("** this is a deprecated function **")) void func2(int) {} __declspec(deprecated(MY_TEXT)) void func3(int) {} int main() {    func1();  func1(1);   // C4996，警告信息：warning C4996: 'func1': was declared deprecated  func2(1);   // C4996，警告信息：warning C4996: 'func2': ** this is a deprecated function **        func3(1);   // C4996，警告信息：warning C4996: 'func3': function is deprecated }

CCASSERT(_referenceCount > 0, "reference count should greater than 0");第一个参数是判断条件，第二个参数是判断为false时的报错内容