#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QMessageBox>
#include <QProcess>
#include <QTextCodec>
#include <QCloseEvent>MainWindow::MainWindow(QWidget *parent) :QMainWindow(parent),ui(new Ui::MainWindow)
{ui->setupUi(this);QTextCodec::setCodecForLocale(QTextCodec::codecForName("KOI8-R"));ui->progressBar->setValue(0);
}MainWindow::~MainWindow()
{delete ui;
}void MainWindow::on_pushButton_clicked()
{process = new QProcess(this);QStringList str;str << "";if (ui->pushButton->text() == "stop"){process->write("quit");process->kill();return;}QString exe = QApplication::applicationDirPath().append("/test.bat");connect(process, SIGNAL(started()), this, SLOT(start_process()));connect(process, SIGNAL(readyReadStandardOutput()), this, SLOT(start_read_output()));connect(process, SIGNAL(readyReadStandardError()), this, SLOT(start_read_err_output()));connect(process, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(finish_process(int, QProcess::ExitStatus)));process->start(exe);if (false == process->waitForStarted()){ui->textBrowser->append("this process can not be called.");}ui->pushButton->setText("stop");
}void MainWindow::start_process()
{ui->progressBar->setVisible(true);ui->progressBar->setValue(0);//QMessageBox::information(this, "ok", "ok", QMessageBox::Ok);ui->textBrowser->append(tr("process start"));
}void MainWindow::finish_process(int exitCode, QProcess::ExitStatus exitStatus)
{if (exitStatus == QProcess::NormalExit){ui->textBrowser->append(tr("process exit normal"));}else{ui->textBrowser->append(tr("process exit crash"));}ui->progressBar->setValue(100);ui->textBrowser->append("process finised");ui->pushButton->setText("ok");
}void MainWindow::start_read_output()
{QByteArray ba = process->readAllStandardOutput();ui->textBrowser->append(ba);
}void MainWindow::start_read_err_output()
{QByteArray ba = process->readAllStandardError();ui->textBrowser->append("error: " + ba);
}void MainWindow::closeEvent(QCloseEvent *event)
{process->write("quit");process->kill();if(!process->waitForFinished(100))return;event->accept();
}

#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include <QMainWindow>
#include <QProcess>namespace Ui {
class MainWindow;
}class MainWindow : public QMainWindow
{Q_OBJECTpublic:explicit MainWindow(QWidget *parent = 0);~MainWindow();QProcess* process;protected:void closeEvent(QCloseEvent *);private slots:void on_pushButton_clicked();void start_process();void start_read_output();void start_read_err_output();void finish_process(int exitCode, QProcess::ExitStatus exitStatus);private:Ui::MainWindow *ui;
};#endif // MAINWINDOW_H