Qt: How to resize a window to its new content

Question

I have a window containing a QScrollArea with a couple widgets in it.

Until now, I was creating the QScrollArea and its child widgets in the constructor of my window, and then I was resizing the window vertically to fit its content using resize(400, sizeHint().height()). So far, so good.

Now, I'm adding or removing widgets in the QScrollArea at runtime. What should I do, after having added or removed widgets, to make the window fits its content vertically? Should I call adjustSize()? resize(sizeHint())? Should there be a call to layout->activate() or maybe updateGeometry() first? Which size policies actually matter in this case? The ones of the window, or of the scroll area, or both? I tried to set them all to Expanding.

I'm using Qt 4.6 on Windows.

Answer 1

It seems that calling resize(sizeHint()) (without any other magic) after widgets were added to the scroll area actually does the trick. Somehow missed that the first time.