<?xml version="1.0"?> <overlay> <vbox> <description value="Simple hbox behaviour" /> <hbox> <button label="btn1" /> <button label="btn2" /> <button label="btn3" /> <button label="btn4" /> </hbox> <description value="Float right" /> <hbox> <hbox> <button label="btn1" /> <button label="btn2" /> <button label="btn3" /> </hbox> <button align="right" label="btn4" /> <button label="btn5" /> </hbox> <description value="Float center" /> <hbox> <hbox> <button label="btn1" /> <button label="btn2" /> <button label="btn3" /> </hbox> <button align="center" label="btn4" /> <button label="btn5" /> </hbox> <description value="Only right" /> <hbox> <button align="right" label="btn" /> </hbox> <description value="Only center" /> <hbox> <button align="center" label="btn" /> </hbox> </vbox> </overlay>