Question

我写了一个套接字客户端服务器，我在mythread.h文件中创建了一个套接字向量列表，但它给了我这些我无法解决的错误：

代码：

for (int i = 0; i < v_->size(); i++) 
{
    if(((MYThread *)(v_)[i])->user_id_ != user_id_) 
    {
        ((MYThread *)(v_)[i])->send(strArray);
    }
}

错误：

D：\ My_Socket \ My_Socket \ server \ server \ mythread.cpp：101：错误：C2440：＆＃39;输入＆gt;施放＆＃39;：无法转换为＆＃39; std :: vector＆gt;＆＃39;到＆gt; ＆＃39; MYThread *＆＃39;       同       [       _Ty = MYThread *       ]

D：\ My_Socket \ My_Socket \ server \ server \ mythread.cpp：101：错误：C2227：左边的＆＃39; - ＆gt; user_id _＆＃39;必须指向class / struct / union / generic类型

mythrad.h文件

#ifndef MYTHREAD_H
#define MYTHREAD_H

#include <QListWidget>
#include <QObject>
#include <QTcpSocket>
#include <QAbstractSocket>
#include <QDebug>
#include <vector>
#include <QThread>
#include <QString>
#include <QPixmap>

class MYThread : public QThread
{
public:
explicit MYThread(QThread *parent = 0);
explicit MYThread(QTcpSocket *socket, QListWidget *list, std::vector<MYThread *> *v, int user_id);

void doConnect();
void send(QByteArray data);

signals:

public slots:
void connected();
void disconnected();
void bytesWritten(qint64 bytes);
void readyRead();
void quitThread();
private:
QTcpSocket *socket_;
QListWidget *list_;
std::vector<MYThread *> *v_;

MYThread *tt;

void run();

QPixmap *pixmap;
MYThread *socket;

public:
int user_id_;


};

#endif // MYTHREAD_H

Answer 1

((MYThread *)(v_)[i])->user_id_

尝试将v_转换为MYThread *，然后使用i执行指针数学运算，找到数组的i元素，然后对其进行解复。你想要的是

v_[i]->user_id_

- 编辑 -

根据您对v_的说明进行澄清：

(*v_)[i]->user_id_

http://ideone.com/XxuVjE

C2227：左边的＆＃39; - ＆gt;发送＆＃39;必须指向class / struct / union / generic类型

1 个答案: