In my Qt 3.3 project, I have noticed when I resize my window nothing shrinks or stretches with it. The pieces either disappear or a lot of empty space is added based on if I shrink or stretch the GUI. The GUIs I have made in Qt 4.2 always resize when the window resizes. Upon converting a Qt 4 GUI to Qt 3, the GUI doesn't resize with the resized window. I never worried about reimplementing the resizeEvent for my class in Qt 4 and everything worked, so why does the Qt 3 GUI not resize? Thanks for all your help!