qt中进程的使用

  QProcess *mprocess; //定义一个进程参数

//初始化进程对象
 mprocess = new QProcess();

 //启动计算器
  mprocess->start("calc"); 

 while(mprocess->canReadLine()) //全部读出进程中的数据

    QStringList list;
    //拼接字符串，跟appen相似
    list<<"ech0";
    list<<ui->comboBoxArg->currentText();
    mprocess->start(ui->comboBoxCmd->currentText(),list);//启动进程，后面跟的是参数

 1 #ifndef PROCESS_H
 2 #define PROCESS_H
 3 
 4 #include <QMainWindow>
 5 #include <QProcess> //qt中进程的头文件
 6 namespace Ui {
 7 class Process;
 8 }
 9 
10 class Process : public QMainWindow
11 {
12     Q_OBJECT
13 
14 public:
15     explicit Process(QWidget *parent = 0);
16     ~Process();
17     QProcess *mprocess; //定义一个进程参数
18 
19 private slots:
20     void read_data();
21     void on_btn_cmd_clicked();
22 
23 private:
24     Ui::Process *ui;
25 };
26 
27 #endif // PROCESS_H

 1 #include "process.h"
 2 #include "ui_process.h"
 3 #include <QDebug>
 4 #include <QStringList>
 5 Process::Process(QWidget *parent) :
 6     QMainWindow(parent),
 7     ui(new Ui::Process)
 8 {
 9     ui->setupUi(this);
10     //初始化进程对象
11     mprocess = new QProcess();
12 
13     //监听读数据信号
14     connect(mprocess,SIGNAL(readyRead()),this,SLOT(read_data()));
15 
16     //添加运行参数
17     ui->comboBoxArg->addItem("192.168.1.246");
18     ui->comboBoxArg->addItem("./");
19     ui->comboBoxArg->addItem("c++");
20 
21     ui->comboBoxCmd->addItem("ifconfig");
22     ui->comboBoxCmd->addItem("ls");
23     ui->comboBoxCmd->addItem("./test");
24 
25 }
26 
27 Process::~Process()
28 {
29     delete ui;
30 }
31 
32 
33 void Process::read_data()
34 {
35     while(mprocess->canReadLine()) //全部读出进程中的数据
36     {
37          qDebug()<<mprocess->readLine();
38     }
39 
40 }
41 
42 void Process::on_btn_cmd_clicked()
43 {
44     QStringList list;
45     //拼接字符串，跟appen相似
46     list<<"ech0";
47     list<<ui->comboBoxArg->currentText();
48 
49     mprocess->start(ui->comboBoxCmd->currentText(),list);//启动进程，后面跟的是参数
50 
51 }