C++ (Cpp) QGraphicsLinearLayout::effectiveSizeHint Exemples

Exemple #1

void tst_QGraphicsLayout::sizeHints()
{

    QGraphicsView view;
    QGraphicsScene scene;
    QGraphicsWidget *window = new QGraphicsWidget();
    scene.addItem(window);
    QGraphicsLinearLayout *lout = new QGraphicsLinearLayout(window);
    lout->setContentsMargins(0,0,0,0);
    QGraphicsWidget *gw = new QGraphicsWidget(window);
    gw->setMinimumSize(QSizeF(10,10));
    gw->setPreferredSize(QSizeF(100,100));
    gw->setMaximumSize(QSizeF(500,500));
    lout->addItem(gw);
    QCOMPARE(lout->effectiveSizeHint(Qt::MinimumSize), gw->effectiveSizeHint(Qt::MinimumSize));
    QCOMPARE(lout->effectiveSizeHint(Qt::PreferredSize), gw->effectiveSizeHint(Qt::PreferredSize));
    QCOMPARE(lout->effectiveSizeHint(Qt::MaximumSize), gw->effectiveSizeHint(Qt::MaximumSize));

}