QT交互界面：实现按钮运行脚本程序

一.所需运行的脚本

本篇采用上一篇文章的脚本为运行对象，实现按钮运行脚本

上一篇文章：从0到1：QT项目在Linux下生成可以双击运用的程序（采用脚本）-CSDN博客

二.调用脚本的代码

widget.cpp中添加以下代码

#include "widget.h"
#include "./ui_widget.h"
#include <QMessageBox>
#include <QProcess>

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    connect(ui->pushButton_test, &QPushButton::clicked, this, &Widget::on_pushButton_test_clicked);
}

void Widget::on_pushButton_test_clicked()
{
    QString strCmd = "/home/popo/double_click_test/jiao";
    QProcess process;
    process.start("bash", QStringList() << "-c" << strCmd);
    if (process.waitForStarted())
    {
        qDebug() << "Process started successfully.";
        if (process.waitForFinished())
        {
            QByteArray result = process.readAllStandardOutput(); // 读取脚本的输出
            QByteArray error = process.readAllStandardError(); // 读取错误输出
            qDebug() << "Script output:" << result;
            qDebug() << "Script error output:" << error;
        }
        else
        {
            qWarning() << "Failed to execute script";
        }
    }
    else
    {
        qWarning() << "Failed to start script execution";
    }
    process.close();
}

三.代码解析

启动进程

process.start("bash", QStringList() << "-c" << strCmd);

检查进程是否成功启动

if (process.waitForStarted())

等待进程执行完成

再次使用 waitForFinished，等待进程执行完成。如果成功，返回 true。

进程提示信息

    if (process.waitForStarted())
    {
        qDebug() << "Process started successfully.";
        if (process.waitForFinished())
        {
            QByteArray result = process.readAllStandardOutput(); // 读取脚本的输出
            QByteArray error = process.readAllStandardError(); // 读取错误输出
            qDebug() << "Script output:" << result;
            qDebug() << "Script error output:" << error;
        }
        else
        {
            qWarning() << "Failed to execute script";
        }
    }
    else
    {
        qWarning() << "Failed to start script execution";
    }