Layout Auto Change Top/Bottom to Left/Right

[xsacha]

Couldn't find this discussed anywhere but I basically have a layout like this:

@| ----
| | |
| |____|@

So, a thin long box beside a square (fixed size!) box. Now, as the size of the window changes, I want the thin long box to automatically turn in to a wide, short box:

@-----------

---

| |
|_____|@

The reason being that my second box must have a fixed size. The automatic layout I currently have doesn't change as I am specifying either QHBoxLayout or QVBoxLayout.

Is this possible using layouts or otherwise?
Thanks.

[changsheng230]

Please refer to the Qt example: $QTDIR\Examples\4.7\layouts\dynamiclayouts

[xsacha]

Hm. In this example they swap the elements of the grid when a button is pressed.
Not exactly what I'm looking for.

The part I am most concerned about is finding when width > height changes or doing this automatically. The example does this with a button instead.

Edit: I have the frame paint event monitoring width/height and then emitting a signal to the main window to swap my layout. This is working but seems a bit hacky.