调用CMD

1.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
 
#include <QMainWindow>
#include <QProcess>
#include <handleapi.h>
#include <QShortcut>
 
namespace Ui {
class MainWindow;
}
 
class MainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
 
private:
    Ui::MainWindow *ui;
    QProcess *process;
    QShortcut *key;
 
public slots:
    void write_cmd();
    void read_data();
    void finished_process();
    void error_process();
 
};
 
#endif // MAINWINDOW_H

2.cpp

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

#include "mainwindow.h"
#include "ui_mainwindow.h"
 
#include <qDebug>
#include <QShortcut>
 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
 
 
    ui->setupUi(this);
 
    setWindowTitle("cmd text");
    ui->lineEdit->setText(tr("ping www.baidu.com"));
    ui->textEdit->setLineWrapMode(QTextEdit::NoWrap);
 
    /* 新建process */
    process = new QProcess(this);
    process->setProcessChannelMode(QProcess::MergedChannels);
 
    /* 回车 */
    ui->pushButton_Enter->setFocus();
    ui->pushButton_Enter->setShortcut(QKeySequence::InsertParagraphSeparator);
    ui->pushButton_Enter->setShortcut(Qt::Key_Enter);
    ui->pushButton_Enter->setShortcut(Qt::Key_Return);
 
    /* 按键相关 */
    connect(ui->pushButton,SIGNAL(clicked()),ui->lineEdit,SLOT(clear()));                           //清除命令行
    connect(ui->pushButton_Enter,SIGNAL(clicked()),this,SLOT(write_cmd()));                         //回车按钮
    connect(ui->pushButton_Clear,SIGNAL(clicked()),ui->textEdit,SLOT(clear()));                     //清除文本框按钮
 
    /* 命令行相关 */
    connect(process,SIGNAL(readyRead()),this,SLOT(read_data()));                                    //读命令行数据
    connect(process,SIGNAL(readyReadStandardOutput()),this,SLOT(read_data()));                      //读命令行标准数据（兼容）
    connect(process,SIGNAL(errorOccurred(QProcess::ProcessError)),this,SLOT(error_process()));      //命令行错误处理
    connect(process,SIGNAL(finished(int)),this,SLOT(finished_process()));                           //命令行结束处理
 
    /* 焦点相关 */
    connect(ui->pushButton,SIGNAL(clicked()),ui->lineEdit,SLOT(setFocus()));
    connect(ui->pushButton_Enter,SIGNAL(clicked()),ui->lineEdit,SLOT(setFocus()));
    connect(ui->pushButton_Clear,SIGNAL(clicked()),ui->lineEdit,SLOT(setFocus()));
 
    process->start("cmd.exe");
}
 
MainWindow::~MainWindow()
{
    /* 关闭cmd */
    process->close();
 
    /* 释放空间 */
    delete ui;
    delete process;
 
    /* 拴住 */
    ui = NULL;
    process = NULL;
 
    /* 信息输出 */
    qDebug() << "end Process" << endl;
}
 
void MainWindow::write_cmd()
{
    /* 获得命令，\r\n代替键盘的Enter，没有则不会执行 */
    QString cmd = ui->lineEdit->text() + "\r\n";
    ui->lineEdit->clear();
    ui->lineEdit->setFocus();
 
    qDebug()<<"QString:"<<cmd;
    /* 转为char*并写入 */
    //QByteArray qbarr = cmd.toLatin1();
    QByteArray qbarr = cmd.toLocal8Bit();
    //QByteArray qbarr = cmd.toUtf8();
    qDebug()<<"QByteArray:"<<qbarr;
    char *ch = qbarr.data();
    qint64 len = cmd.length();
    qDebug()<<"char *:"<<ch;
    //在从cmd--->ch的过程中，中文数据被破坏了。成了"???"
    process->write(ch, len);
 
    QString str(qbarr);
    qDebug()<<"QString:"<<str;
    /* 信息输出 */
    //qDebug() << "Success:write_cmd：" << cmd << endl;
}
 
void MainWindow::read_data()
{
    /* 接收数据 */
    QByteArray bytes = process->readAll();
 
    /* 显示 */
    QString msg = QString::fromLocal8Bit(bytes);
    ui->textEdit->append(msg);
    ui->textEdit->update();
 
    /* 信息输出 */
    qDebug() << "Success:read_data:" << msg << endl;
 
}
 
void MainWindow::finished_process()
{
    /* 接收数据 */
    int flag = process->exitCode();
 
    /* 信息输出 */
    qDebug() << "Success:finishedProcess():" << flag << endl;
}
 
void MainWindow::error_process()
{
    /* 接收数据 */
    int err_code  = process->exitCode();
    QString err = process->errorString();
 
    /* 显示 */
    ui->textEdit->append(QString("error coed:%1").arg(err_code));
    ui->textEdit->append(err);
 
    /* 信息输出 */
    qDebug() << "Success:error_process():" << err << endl;
}
 
 
 
 
 
#if 0
#include "mainwindow.h"
#include "ui_mainwindow.h"
 
#include <qDebug>
 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    ui->lineEdit->setText(tr("ping www.baidu.com"));
    ui->textEdit->setLineWrapMode(QTextEdit::NoWrap);
 
    process = new QProcess(this);
    process->setProcessChannelMode(QProcess::MergedChannels);
 
    connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(write_cmd()));
    connect(process,SIGNAL(readyReadStandardOutput()),this,SLOT(read_data()));
    connect(process,SIGNAL(errorOccurred(QProcess::ProcessError)),this,SLOT(read_data()));
    connect(process,SIGNAL(finished(int)),this,SLOT(finished_process()));
}
 
MainWindow::~MainWindow()
{
    /* 关闭cmd */
    process->close();
 
    /* 释放空间 */
    delete ui;
    delete process;
 
    /* 拴住 */
    ui = NULL;
    process = NULL;
 
    /* 信息输出 */
    qDebug() << "end Process" << endl;
}
 
void MainWindow::write_cmd()
{
    /* 获得命令 */
    QString cmd = ui->lineEdit->text();
 
    /* 解析命令 */
    //QStringList args = cmd.split('&');
 
    process->start("cmd.exe", QStringList() << "/c" << cmd);
 
#if 0
    /* 转为char* */
    QByteArray qbarr = cmd.toLatin1();
    char *ch = qbarr.data();
    qDebug() << process->write(ch) << ":" << cmd;
#endif
 
    /* 信息输出 */
    qDebug() << cmd << "write_cmd" << endl;
}
 
void MainWindow::read_data()
{
    /* 判断是正确还是错误 */
    QByteArray bytes = process->readAllStandardOutput();
    if(bytes.isEmpty())
    {
        /* 错误 */
        int err_code  = process->exitCode();
        QString err = process->errorString();
 
        ui->textEdit->append(QString("error coed:%1").arg(err_code));
        ui->textEdit->append(err);
 
        qDebug() << err <<endl;
 
    }
    else
    {
        /* 正确 */
        QString msg = QString::fromLocal8Bit(bytes);
        ui->textEdit->append(msg);
 
        qDebug() << msg <<endl;
    }
    ui->textEdit->update();
 
    /* 信息输出 */
    qDebug() << "read_data" << endl;
}
 
void MainWindow::finished_process()
{
    /* 信息输出 */
    qDebug() << "finishedProcess" << endl;
}
#endif