General and Desktop 콘솔에서 사용자 입력받기

사용자로부터 콘솔창을 통해 입력받기 위한 예제소스코드이다.

#ifdef Q_OS_WIN
#include <QWinEventNotifier>
#include <windows.h>
#else
#include <QSocketNotifier>
#endif

#include <iostream>

class Console : public QObject
{
    Q_OBJECT
public:
    Console(QObject *parent = nullptr):QObject(parent){}

    void run()
    {
        std::cout << "Please input command." << std::endl;
        std::cout << "> " << std::flush;

#ifdef Q_OS_WIN
        m_notifier = new QWinEventNotifier(GetStdHandle(STD_INPUT_HANDLE));
        connect(m_notifier, &QWinEventNotifier::activated, [&](HANDLE) {
#else
        m_notifier = new QSocketNotifier(fileno(stdin), QSocketNotifier::Read, this);
        connect(m_notifier, &QSocketNotifier::activated, [&](int) {
#endif
            std::string line;
            std::getline(std::cin, line);
            if (std::cin.eof() || line == "quit") {
                std::cout << "Good bye!" << std::endl;
                emit quit();
            } else {
                std::cout << "Echo: " << line << std::endl;
                std::cout << "> " << std::flush;
            }
        });
    }

private slots:

signals:
    void quit();

private:
#ifdef Q_OS_WIN
    QWinEventNotifier *m_notifier;
#else
    QSocketNotifier *m_notifier;
#endif
};

main.cpp

#include <QCoreApplication>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    Console console;
    console.run();

    // quit 시그널을 수신하면 종료
    QObject::connect(&console, SIGNAL(quit()), &a, SLOT(quit()));

    return a.exec();
}