Resizeable Dialog/Layout (like Dolphin)

[kiss-o-matic]

Anyone know what that is? I Open Dolphin in KDE4, and I've got a Places column, another column w/ file views, and the information column. Any and all are resizeable with the mouse. "Dolphin" and "widget" in Google gets me all types of desktop widgest, so that's no good. :eek:

[wysota]

QMainWindow and QDockWidget.

[kiss-o-matic]

Thank you, kind sir.