Reducing the size of a QMdiSubWindow holding a QLabel with QPixmap

Balajee

The question statement says it all. I am able to enlarge the QMdiSubWindow (and the pixmap scales UP, i.e. enlarges, appropriately) but I am not able to reduce its size (i.e. scale the image DOWN or shrink). When trying to scale down though, the border handles of the QMdiSubWindow remain rigidly fixed.

The code I am using is as follows:
@class PixmapWidget : public QLabel
{
Q_OBJECT
public:
PixmapWidget():
QLabel()
{
_pixmap = QPixmap("path\to\images.jpg");
setPixmap(_pixmap);
_layout = new QHBoxLayout();
_layout->setSizeConstraint(QLayout::SetNoConstraint);
setLayout(_layout);
setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred));
}

void resizeEvent(QResizeEvent * event)
{
    int width = event->size().width();
    int height = event->size().height();
    setPixmap(_pixmap.scaled(width,height));
    QLabel::resizeEvent(event);
}

protected:
QPixmap _pixmap;
QHBoxLayout* _layout;
};

int main()
{
QMainWindow mainWindow;
QHBoxLayout* layout = new QHBoxLayout();
QMdiArea* mdiArea = new QMdiArea();

mainWindow.setCentralWidget(mdiArea);
mainWindow.centralWidget()->setLayout(layout);
layout->setSizeConstraint(QLayout::SetNoConstraint);

QMdiSubWindow* mdiSubWindow = new QMdiSubWindow();
layout->addWidget(mdiSubWindow);        
mdiSubWindow->setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred));
mdiSubWindow->layout()->setSizeConstraint(QLayout::SetNoConstraint);

DMSQt::PixmapWidget pixmapWidget;        
mdiSubWindow->layout()->addWidget(&pixmapWidget);

mainWindow.show();
qapp.exec&#40;&#41;;

}@

Balajee

Alright, I found the problem. Apparently, I need to set a minimum size on my text label:

Adding:

@setMinimumSize(_pixmap.width(), _pixmap.height());@

solved the problem.