Widget adjustment in QT without using layouts

Question

I am working in Qt 5.7 in C++ in QT Designer. In central widget I have two labels fulfilled with pictures. One picture is big (label), second is smaller, smaller (label_2) is in front of the bigger one. When I resize the MainWindow, the pictures are not adjusting its size. I was trying to adjust them using layouts, but my problem is that the smaller picture must overlay the bigger one (map and map position). And when I use layout, pictures are always put in a different place. How to force picture in the labels (label, label_2) adjusting its size depending on Main Windows without using a layout?

Have you tried `QLabel::setScaledContents()` to scale pictures with layout? — ilotXXI, Jul 11 '16 at 14:15

score 1 · Accepted Answer · answered Jul 11 '16 at 15:35

You can handle the resize events of the main window and set the labels geometry accordingly.

In this case, I suggest to reimplement the resizeEvent(QResizeEvent *event) in the implementation of the widget created by the designer, to handle the resize events.

Example:

void MainWindow::resizeEvent(QResizeEvent *event)
{
   QMainWindow::resizeEvent(event);
   int x1, y1, w1, h1;
   int x2, y2, w2, h2;
   // compute the labels geometry
   // you can get the old and the new window size
   // calling event->oldSize() and event->size()
   //....
   label->setGeometry(x1, y2, w1, h1);
   label_2->setGeometry(x2, y2, w2, h2);
}

See QWidget::resizeEvent()

Widget adjustment in QT without using layouts

1 Answers1