QT线程使用实例.........

#include "threaddlg.h" #include <QHBoxLayout> ThreadDlg::ThreadDlg(QWidget *parent) : QDialog(parent) { setWindowTitle(tr("线程")); startBtn = new QPushButton(tr("开始")); stopBtn = new QPushButton(tr("停止")); quitBtn = new QPushButton(tr("退出")); QHBoxLayout *mainLayout = new QHBoxLayout(this); mainLayout->addWidget(startBtn); mainLayout->addWidget(stopBtn); mainLayout->addWidget(quitBtn); connect(startBtn,SIGNAL(clicked()),this,SLOT(slotStart())); connect(stopBtn,SIGNAL(clicked()),this,SLOT(slotStop())); connect(quitBtn,SIGNAL(clicked()),this,SLOT(close())); } void ThreadDlg::slotStart() { for(int i=0;i<MAXSIZE;i++) { myThread[i]=new workThread(); //创建五个线程 } for(int i=0;i<MAXSIZE;i++) { myThread[i]->start(); //启动这五个线程 } startBtn->setEnabled(false); stopBtn->setEnabled(true); } void ThreadDlg::slotStop() { for(int i=0;i<MAXSIZE;i++) { myThread[i]->terminate();//结束这五个线程 myThread[i]->wait();//阻塞等待处理结束 } startBtn->setEnabled(true); stopBtn->setEnabled(false); } ThreadDlg::~ThreadDlg() { }