“Caculate::writehtml”: 函数调用缺少参数列表;请使用“&Caculate::writehtml”创建指向成员的指针

定义成全局或者静态成员函数

#ifndef __HELLOWORLD_SCENE_H__
#define __HELLOWORLD_SCENE_H__


#include "cocos2d.h"
#include "cocos-ext.h"
#include "curl\curl.h"
#include "network\HttpClient.h"
#include "network\HttpResponse.h"
USING_NS_CC;
USING_NS_CC_EXT;


class HelloWorld : public cocos2d::CCLayer
{
public:
    // Here's a difference. Method 'init' in cocos2d-x returns bool, instead of returning 'id' in cocos2d-iphone
    virtual bool init();  


    // there's no 'id' in cpp, so we recommend returning the class instance pointer
    static cocos2d::CCScene* scene();
    
    // a selector callback
    void menuCloseCallback(CCObject* pSender);
    
    // implement the "static node()" method manually
    CREATE_FUNC(HelloWorld);


//分配点数请求回调函数
void onHttpRequestCompleted( CCHttpClient* client, CCHttpResponse* response);
static char *loginResponseString;
static size_t writehtml(void * ptr,size_t size,size_t number,void* stream);
};


#endif // __HELLOWORLD_SCENE_H__

#include "HelloWorldScene.h"

char *HelloWorld::loginResponseString = NULL;

CCScene* HelloWorld::scene()
{
    // 'scene' is an autorelease object
    CCScene *scene = CCScene::create();
    
    // 'layer' is an autorelease object
    HelloWorld *layer = HelloWorld::create();

    // add layer as a child to scene
    scene->addChild(layer);

    // return the scene
    return scene;
}

// on "init" you need to initialize your instance
bool HelloWorld::init()
{
    //
    // 1. super init first
    if ( !CCLayer::init() )
    {
        return false;
    }
    
    CCSize visibleSize = CCDirector::sharedDirector()->getVisibleSize();
    CCPoint origin = CCDirector::sharedDirector()->getVisibleOrigin();

    /
    // 2. add a menu item with "X" image, which is clicked to quit the program
    //    you may modify it.

    // add a "close" icon to exit the progress. it's an autorelease object
    CCMenuItemImage *pCloseItem = CCMenuItemImage::create(
                                        "CloseNormal.png",
                                        "CloseSelected.png",
                                        this,
                                        menu_selector(HelloWorld::menuCloseCallback));
    
	pCloseItem->setPosition(ccp(origin.x + visibleSize.width - pCloseItem->getContentSize().width/2 ,
                                origin.y + pCloseItem->getContentSize().height/2));

    // create menu, it's an autorelease object
    CCMenu* pMenu = CCMenu::create(pCloseItem, NULL);
    pMenu->setPosition(CCPointZero);
    this->addChild(pMenu, 1);

    /
    // 3. add your codes below...

    // add a label shows "Hello World"
    // create and initialize a label
    
    CCLabelTTF* pLabel = CCLabelTTF::create("Hello World", "Arial", 24);
    
    // position the label on the center of the screen
    pLabel->setPosition(ccp(origin.x + visibleSize.width/2,
                            origin.y + visibleSize.height - pLabel->getContentSize().height));

    // add the label as a child to this layer
    this->addChild(pLabel, 1);

    // add "HelloWorld" splash screen"
    CCSprite* pSprite = CCSprite::create("HelloWorld.png");

    // position the sprite on the center of the screen
    pSprite->setPosition(ccp(visibleSize.width/2 + origin.x, visibleSize.height/2 + origin.y));

    // add the sprite as a child to this layer
    this->addChild(pSprite, 0);


	//上传数据
    
    //CCHttpRequest* request = new CCHttpRequest();//创建请求对象  
    //
    //request->setUrl("http://192.168.1.11:3030/login");//设置请求的url，username和password已经包含在url中  
    //request->setRequestType(CCHttpRequest::kHttpGet);//设置为Get模式  
    //request->setResponseCallback(this, httpresponse_selector(HelloWorld::onHttpRequestCompleted));//设置响应的回调  
    //CCHttpClient::getInstance()->send(request);//发送请求  
    //request->release();//释放请求  
  


	
	return true;
}

size_t HelloWorld::writehtml(void * ptr,size_t size,size_t number,void* stream)
{
    char *p = (char *)ptr;
    loginResponseString = new char[strlen(p) + 1];
    strcpy(loginResponseString, p);
    return size*number;
}

//分配点数请求回调函数
void HelloWorld::onHttpRequestCompleted( CCHttpClient* client, CCHttpResponse* response){
     
	 if (!response->isSucceed())//如果响应失败，输出错误信息  
    {    
		CCMessageBox("请求失败", "");
        return ;     
    }    

	std::vector *buffer = response->getResponseData();//接收响应信息  
    std::string recieveData;  
    for (unsigned int i = 0; i < buffer->size(); i++)  
    {    
        recieveData += (*buffer)[i];    
    }  
   
	CCMessageBox(recieveData.c_str(), "");
}


void HelloWorld::menuCloseCallback(CCObject* pSender)
{
	CURL *url = curl_easy_init();
    if(!url)
    {//---if---
        CCMessageBox("curl_easy_init网络连接失败", "失败");
        return ;
    }//---end if---
	std::string cc;
    curl_easy_setopt(url, CURLOPT_URL, "http://192.168.1.11:3030/login");
    curl_easy_setopt(url, CURLOPT_POST, true);
    curl_easy_setopt(url, CURLOPT_POSTFIELDS, "user_account=zhangsan&user_password=123456");
    curl_easy_setopt(url, CURLOPT_FOLLOWLOCATION,1L);
    curl_easy_setopt(url, CURLOPT_WRITEFUNCTION, (HelloWorld::writehtml));
    curl_easy_setopt(url, CURLOPT_WRITEDATA,&cc);

    if (CURLE_OK != curl_easy_perform(url))
    {//---if---
        CCMessageBox("curl_easy_perform失败", "失败");
        return ;
    }//---endif---

	CCMessageBox(HelloWorld::loginResponseString, "");
}