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char totalbuffer[2048] = {0};

这是我想要的数组的初始化。我试图放入 main.cpp 和我的头文件,qt 创建者不断显示错误。

这是我的 .h 头文件代码:

#ifndef QTPROJECT2_H
#define QTPROJECT2_H

#include <QDialog>
#include <QMainWindow>
#include <QtNetwork/QHostAddress>
#include <QLabel>
#include <QPushButton>
#include <QUdpSocket>
#include <QString>
#include <QTcpSocket>
#include <QDataStream>
#include <qstring.h>
#include <QStandardItem>

namespace Ui {
class QtProject2;
}

class QtProject2 : public QDialog
{
    Q_OBJECT

public:
    explicit QtProject2(QWidget *parent = 0);
    ~QtProject2();
    void start(QString address, quint16 port);
    char totalbuffer[2048]={0};
    QStandardItemModel* ListModel;

private slots:
    void on_pushButton_clicked();

public slots:
    void startTransfer();
    void disconnected();
    void readyRead();



signals:
    void socketReady();


private:
    Ui::QtProject2 *ui;
    QTcpSocket *client;

};


#endif // QTPROJECT2_H

这是我的 main.cpp 编码:

    #include "qtproject2.h"
    #include <QApplication>

    int main(int argc, char *argv[])
    {
        QApplication a(argc, argv);
        QtProject2 w;
        w.show();
        char totalbuffer[2048]={0};
        return a.exec();
    }

这是我的项目 qtproject2.cpp:#include "qtproject2.h" #include "ui_qtproject2.h"

QtProject2::QtProject2(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::QtProject2)
{
    ui->setupUi(this);

}

QtProject2::~QtProject2()
{
    delete ui;
    QtProject2 Client2;
    Client2.close();

}


void QtProject2::startTransfer()
{
  ui->slabel->setText("Connected!");
}

void QtProject2::disconnected()
{
    ui->slabel->setText("Disconnected!");
}

void QtProject2::readyRead()
{

    client->waitForBytesWritten(1000);
    client->waitForReadyRead(3000);
    char CustomerData_MacAdd[][18]={"14:13:12:11:67:11","52:22:22:22:22:22", "14:22:44:55:22" };
    char CustomerData_Username[][10]={"Robert","Alex","Ivan"};

    QByteArray buffer1 = client->readLine();
    char *temp = buffer1.data();
    char buffer[1024]={0};

    if (strncmp(temp,"*CLIENT",6)==0)
    {
        int j;
        for(j=9;j<26;j++)
        { buffer[j-9]=temp[j];}
    }else if(strncmp(temp,"*ALERT",5)==0)
    {
        int j;
        for(j=8;j<25;j++)
        {buffer[j-8]=temp[j];}
    }

    //char totalbuffer[2048]={0};

    int k;
    for (k=0;k<3;k++){
              if (strncmp(buffer,CustomerData_MacAdd[k],16)==0){
                  strncat(totalbuffer,"User is in Queue : ",19);
                  strncat (totalbuffer,CustomerData_Username[k],size_t(CustomerData_Username[k]));
                  strncat(totalbuffer,"\n",2);

                  ui->label->setText(totalbuffer);

        }}

    ui->slabel->setText(buffer1);

}

void QtProject2::on_pushButton_clicked()
{ 
    client = new QTcpSocket(this);
    connect(client, SIGNAL(connected()),this, SLOT(startTransfer()));
    connect(client, SIGNAL(disconnected()), this, SLOT(disconnected()));
    connect(client, SIGNAL(readyRead()), this, SLOT(readyRead()));


    /*Connect to User Define Port Address*/
    client->connectToHost("127.0.0.1", 1234);
}

焦点为 char totalbuffer[2048]={0}; ,我真的不知道我应该把它放在哪里。我用谷歌和stackoverflow搜索过,所有的方法都是在.cpp文件中使用类和调用。但我的一个是 GUI 应用程序,这与控制台不同。

我应该怎么办?我真的需要帮助。感谢大家的帮助,谢谢~

已编辑***这是错误显示。

error assigning to an array from an initializer list

我认为初始化列表不能放入头文件和 main.cpp 那么我将如何初始化一个数组?像 C++ Visual Studio 一样使用公共变量......

4

2 回答 2

0

这与 Qt 无关,而是与基本 C++ 相关。

类成员在构造函数中初始化。你可以在std::fill那里使用。

于 2013-07-25T07:05:25.537 回答
0

您可以使用 memset 或 bzero 函数

memset((void*)&totalbuffer, 0, sizeof(totalbuffer));

或者

bzero((void*)&totalbuffer, sizeof(totalbuffer));
于 2013-07-24T09:18:42.627 回答