程序运行报错No such slot MainWindow::recvTime - QTCN开发网

只看楼主倒序阅读楼主发表于: 2017-05-31

一个主窗口,另外启动了一个线程,并在这个线程里发送一个信号,主窗口的lineEdit设置一个槽接收这个信号里的字符串并显示
运行时报错:

QObject::connect: No such slot MainWindow::recvTime(const QString time) in ../processTest1/mainwindow.cpp:11
QObject::connect:  (receiver name: 'MainWindow')

mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include "stimethread.h"

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();

private:
    Ui::MainWindow *ui;

    timeThread *tThread;
public slots:
   void recvTime(const QString time);
};

#endif // MAINWINDOW_H

线程头文件stimethread.h
#ifndef TIMETHREAD_H
#define TIMETHREAD_H

#include <QThread>
#include "datalib.h"

class timeThread:public QThread
{
  Q_OBJECT
  public:
    explicit timeThread(QObject *parent=0);
    ~timeThread();
    void stop();
  protected:
    void run();
  private:
    volatile bool stopped;
  signals:
    void sendtime(const QString);
};

#endif // TIMETHREAD_H

mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    ui->dateTimeEdit->setDisplayFormat("yyyy年MM月dd日 HH:mm:ss");
    tThread=new timeThread;
    connect(tThread,SIGNAL(sendtime(QString)), this,SLOT(recvTime(const QString time)), Qt::QueuedConnection);
    tThread->start();
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::recvTime(const QString time)
{
    //QDateTime data;
    //data.toString("2017 05");
    //ui->dateTimeEdit->setDateTime((QDateTime)time);
    ui->lineEdit->setText(time);
}

线程源文件
stimethread.cpp

#include "stimethread.h"
#include <QThread>
#include <QDateTime>

timeThread::timeThread(QObject *parent):
    QThread(parent)
{
    stopped=false;
}

timeThread::~timeThread()
{
   wait();
}

void timeThread::run()
{
    qint32 i;
    QDateTime nowTime;
    QString  timestr;
    while(!stopped)
    {
         msleep(1000);
         nowTime=QDateTime::currentDateTime();
         timestr=nowTime.toString("yyyy年MM月dd日 hh:mm:ss");
         emit sendtime(timestr);
//str = csv.section(',', -3, -2);
    }

}

void timeThread::stop()
{
    stopped=true;
}