Setting background image for Central Widget

[wysota]

#include <QtGui>
 
int main(int argc, char **argv){
    QApplication app(argc, argv);
    QMainWindow mw;
    QWidget *w = new QWidget;
    mw.setCentralWidget(w);
    w->setAutoFillBackground(true);
    w->setStyleSheet("background-color: red;");
    mw.show();
    return app.exec();
}

#include <QtGui>

int main(int argc, char **argv){
    QApplication app(argc, argv);
    QMainWindow mw;
    QWidget *w = new QWidget;
    mw.setCentralWidget(w);
    w->setAutoFillBackground(true);
    w->setStyleSheet("background-color: red;");
    mw.show();
    return app.exec();
}

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or...

#include <QtGui>
 
int main(int argc, char **argv){
    QApplication app(argc, argv);
    QMainWindow mw;
    QWidget *w = new QWidget;
    mw.setCentralWidget(w);
    w->setAutoFillBackground(true);
//    w->setStyleSheet("background-color: red;");
    QPalette p = w->palette();
    p.setColor(QPalette::Background, Qt::yellow);
    w->setPalette(p);
    mw.show();
    return app.exec();
}

#include <QtGui>

int main(int argc, char **argv){
    QApplication app(argc, argv);
    QMainWindow mw;
    QWidget *w = new QWidget;
    mw.setCentralWidget(w);
    w->setAutoFillBackground(true);
//    w->setStyleSheet("background-color: red;");
    QPalette p = w->palette();
    p.setColor(QPalette::Background, Qt::yellow);
    w->setPalette(p);
    mw.show();
    return app.exec();
}

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