I'm guessing the 44 in "0 524; 320 44" might be the height? But I have no idea on how to get hold of that value, and I don't want to hardcode it into my app...
Well, I thought I needed to know its height as CalcRelativeKeyboardHeight didn't take the bottom toolbar into account, so when I resized a view using it, the view pas placed partly behind the toolbar. So I thought a little CalcRelativeKeyboardHeight-toolbarHeight would do the trick.
Seems that Page1.RootPanel.Height works nicely though. Thanks!