main.cpp

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// ======================================================================
//  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);
    QWidget      wgt;

    QPushButton* pcmdA = new QPushButton("Button1");
    QPushButton* pcmdB = new QPushButton("Button2");
    QPushButton* pcmdC = new QPushButton("Button3");

    //Layout setup
    QVBoxLayout* pvbxLayout = new QVBoxLayout;    
    pvbxLayout->addWidget(pcmdA);
    pvbxLayout->addWidget(pcmdB);
    pvbxLayout->addWidget(pcmdC);
    wgt.setLayout(pvbxLayout);

    QFile file(":/style/simple.qss");
    file.open(QFile::ReadOnly);
    QString strCSS = QLatin1String(file.readAll());

    qApp->setStyleSheet(strCSS);
    wgt.show();

    return app.exec();
}