Qt调用cmd

一、效果展示

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二、关键代码

QProcess process;
QString cmd = "ping 127.0.0.1";
process.start(cmd);
process.waitForStarted();
process.waitForFinished();
text->append(QString::fromLocal8Bit(process.readAllStandardOutput()));

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三、完整代码

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QDebug>
#include <QProcess>
#include <QTextEdit>
#include <QLineEdit>
#include <QPushButton>
#include <QWidget>
#include <QHBoxLayout>
#include <QVBoxLayout>


namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

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

    QWidget* celWidget;
    QTextEdit* text;
    QLineEdit* line;
    QPushButton* btn;

public slots:
    void slot_btn();


private:
    Ui::MainWindow *ui;
};

#endif // MAINWINDOW_H

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

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    celWidget = new QWidget;
    QVBoxLayout* mainLayout = new QVBoxLayout(celWidget);
    this->setCentralWidget(celWidget);

    text = new QTextEdit;

    line = new QLineEdit;
    btn = new QPushButton(QString("Enter"));
    connect(btn,&QPushButton::clicked,this,&MainWindow::slot_btn);
    QHBoxLayout* H1_Layout = new QHBoxLayout;
    H1_Layout->addWidget(line);
    H1_Layout->addWidget(btn);


    mainLayout->addWidget(text);
    mainLayout->addLayout(H1_Layout);
}

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

void MainWindow::slot_btn()
{
    QProcess process;
    QString cmd = line->text();
    process.start(cmd);
    process.waitForStarted();
    process.waitForFinished();
    text->append(QString::fromLocal8Bit(process.readAllStandardOutput()));
}