【Qt】使用QProcess调用其它程序或脚本

#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_OBJECT

public:
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