Responsive Design in QML

[itzwich]

Hallo. I would like to build a Desktop surface in qt design studio. If I create my new projekt it add a default Rectangle

How can I make this main Rectangle Responsive?

If I pull the window bigger my Rectangle don't change his size.
I hope everyone can help me.

[sierdzio]

Rectangle {
  anchors.fill: parent
}

This will make your Rectangle fill the window.