main.cpp

Go to the documentation of this file.

// ======================================================================
//  main.cpp
// ======================================================================
//                   This file is a part of the book 
//             "Qt 5.10 Professional programming with C++"
//                       http://qt-book.com
// ======================================================================
//  Copyright (c) 2017 by Max Schlee
// ======================================================================

#include <QtWidgets>

// ----------------------------------------------------------------------
int main (int argc, char** argv)
{
    QApplication app (argc, argv);

    QLineEdit txt("User input: ");
    txt.show();
    txt.resize(300, 20);

    int i;
    for (i = 0; i < Qt::Key_Z - Qt::Key_A + 1; ++i) {
        QChar ch      = 65 + i;
        int   nKey    = Qt::Key_A + i;
        QKeyEvent keyPress(QEvent::KeyPress, nKey, Qt::NoModifier, ch);
        QApplication::sendEvent(&txt, &keyPress);

        QKeyEvent keyRelease(QEvent::KeyRelease, nKey, Qt::NoModifier, ch);
        QApplication::sendEvent(&txt, &keyRelease);
    }

    return app.exec();
}