.h文件代码：
#ifndef THREADDIALOG_H
#define THREADDIALOG_H
#include <QMainWindow>
#include<QThread>
#include<QString>
#include <QMessageBox>
#include <QPushButton>
#include<QCloseEvent>
#include<QEvent>
namespace Ui {
class ThreadDialog;
}
class ThreadDialog : public QMainWindow
{
Q_OBJECT
public:
explicit ThreadDialog(QWidget *parent = 0);
~ThreadDialog();
private:
Ui::ThreadDialog *ui;
protected:
void closeEvent(QCloseEvent *event);
private slots:
void startorStopThreadA();
void startorStopThreadB();
};
class MyThead:public QThread
{
Q_OBJECT
public:
virtual void Thread();
void setMessage(const QString &message);
void stop();
protected:
virtual void run();
private:
QString messageStr;
volatile bool stopped;
};
#endif // THREADDIALOG_H
cpp文件代码
#include "threaddialog.h"
#include "ui_threaddialog.h"
#include<QThread>
#include <QMessageBox>
#include <QPushButton>
#include<QCloseEvent>
#include<QEvent>
ThreadDialog::ThreadDialog(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::ThreadDialog)
{
ui->setupUi(this);
MyThead threadA;
MyThead threadB;
QPushButton *threadAButton;
QPushButton *threadBButton;
QPushButton *quitButton;
threadA.setMessage("A");
threadB.setMessage("B");
threadAButton=new QPushButton(tr("Start A"));
threadBButton=new QPushButton(tr("Start B"));
quitButton=new QPushButton(tr("Quit"));
quitButton->setDefault(true);
connect(threadAButton,SIGNAL(cLicked),this,SLOT(startorStopThreadA()));
connect(threadBButton,SIGNAL(cLicked),this,SLOT(startorStopThreadB()));
}
ThreadDialog::~ThreadDialog()
{
delete ui;
}
void ThreadDialog::startorStopThreadA()
{
if(threadA.isRunning()){
threadA.stop();
threadAButton->setText(tr("Start A"));
}
else{
threadA.start();
threadAButton->setText(tr("Stop A"));
}
}
void ThreadDialog::startorStopThreadB()
{
if(threadB.isRunning()){
threadB.stop();
threadBButton->setText(tr("Start B"));
}
else{
threadB.start();
threadBButton->setText(tr("Stop B"));
}
}
void ThreadDialog::closeEvent(QCloseEvent *event)
{
threadA.stop();
threadB.stop();
threadA.wait();
threadB.wait();
event->accept();
}
显示出很多错误，麻烦各位大侠帮忙下
------解决方案--------------------
你这文件通不过编译，
ThreadDialog::ThreadDialog(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::ThreadDialog)
{
ui->setupUi(this);
MyThead threadA;//
MyThead threadB;//这两个是局部变量
而你又在类的其它函数中调用，会提示未声明的变量错误
很显明应该将其提升为的类的变量