How to scroll MainWindow

Hello
I have simple question: How to add scrolling to MainWindow in QT designer, if MainWindow is smaller than widget inside it? I think I should place ScrollArea to MainWindow and change its size always when MainWindow size is changing. But Idon't know how to do it. Thanks for help.

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But Idon't know how to do it.

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Drag a scroll area to the main window and drop it there. Apply a layout on the centralWidget of the window so that the scroll area "snaps" into place. Then drag and drop contents you want to have in the window into the scroll area, apply a layout and set "widgetResizable" property of the scroll area to true.

Thanks!! It works, but... I must add layouts to scroll area. Is it Any way to deploy my buttons within layouts, to avoid moving them when window size is changing?

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Originally Posted by wysota

Drag a scroll area to the main window and drop it there. Apply a layout on the centralWidget of the window so that the scroll area "snaps" into place. Then drag and drop contents you want to have in the window into the scroll area, apply a layout and set "widgetResizable" property of the scroll area to true.

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There is no difference in using layouts with and without QScrollArea. You place items in the scroll area and then apply the layout to the scroll area.