Question

我正在Linux上编写程序。我想在tabwidged上阅读ifconfig和screen。我不知道我怎么能这样做。

我找到了this example。我想升级一下。

我有很多错误

main.cpp: In function ‘int main(int, char**)’:
main.cpp:7:19: error: variable ‘QApplication app’ has initializer but incomplete type
/usr/include/qt4/QtGui/qtabwidget.h:167:14: error: ‘QTabBar* QTabWidget::tabBar() const’ is protected
main.cpp:21:14: error: within this context
main.cpp:21:15: error: invalid use of incomplete type ‘struct QTabBar’
/usr/include/qt4/QtGui/qtabwidget.h:56:7: error: forward declaration of ‘struct QTabBar’
main.cpp:21:33: error: incomplete type ‘QTabBar’ used in nested name specifier
main.cpp:21:63: error: ‘button3’ was not declared in this scope
main.cpp:23:1: error: ‘myprocess’ was not declared in this scope
main.cpp:25:11: error: ‘ps’ was not declared in this scope
main.cpp:26:9: error: ‘myTabWidget’ was not declared in this scope
make: *** [main.o] Error 1
int main(int argc, char *argv[])
{

        QApplication app(argc, argv);
        QMainWindow *window = new QMainWindow();  

        window->setWindowTitle(QString::fromUtf8("MainWindow"));
        window->resize(480, 480);
        QWidget *centralWidget = new QWidget(window);
        QTabWidget *tabs = new QTabWidget(centralWidget);

        tabs->setFixedSize(440, 440);
        tabs->addTab(new QWidget(),"TAB 1");  
        tabs->addTab(new QWidget(),"TAB 2");
        tabs->addTab(new QWidget(),"TAB 3");

tabs->tabBar()->setTabButton(2, QTabBar::LeftSide,((QWidget*)(button3)));
QProcess myProcess;
myprocess.start("ifconfig");
if (myProcess.waitForStarted(-1)) {

    while(ps.waitForReadyRead(-1)) {
        myTabWidget.setText(1, myprocess.readAllStandardOutput());
    }
}
window->setCentralWidget(centralWidget);


        window->setCentralWidget(centralWidget);
        window->show();

        return app.exec();

}

Answer 1

您正在寻找QProcess和/或QtNetwork，以便将此信息添加到标签窗口小部件中。

...
tabs->tabBar()->setTabButton(2, QTabBar::LeftSide,((QWidget*)(button3)));
QProcess myProcess;
myprocess.start("ifconfig");
if (myProcess.waitForStarted(-1)) {
    while(ps.waitForReadyRead(-1)) {
        myTabWidget.setText(your_index, myprocess.readAllStandardOutput());
    }
}
window->setCentralWidget(centralWidget);
...

话虽如此，您可以将QtNetwork视为更具可移植性，因为“ifconfig”无法在Windows等上运行。您需要将其更改为ipconfig等等。

公平地说，即使在Linux上，也应该查看“ip”命令，而不是旧的，很难维护“ifconfig”。

因此，您将寻找具有适当跨平台解决方案的QNetworkInterface和QHostAddress。这是一个简短的例子：

foreach(const QNetworkInterface &interface, QNetworkInterface::allInterfaces())
    qDebug() << interface.hardwareAddress();

foreach(const QHostAdress &address, QNetworkInterface::allAddresses())
    qDebug() << address.toString();

Answer 2

如果您要查找的只是IP地址，则可能需要使用gethostbyname()而不是调用外部程序（例如Linux上的ifconfig或Windows上的ipconfig）。

如果您需要其他信息（除IP地址外），您可能还需要考虑从/ proc / net（仅限Linux）阅读：

http://www.onlamp.com/pub/a/linux/2000/11/16/LinuxAdmin.html

如何从Linux应用程序发送ifconfig？

2 个答案: