Iconification/de-iconification is a co-operative process between a client and a window manager. The relevant standards are set by ICCCM. Mwm is ICCCM compliant. The toplevel (non-override-redirect) windows of an application may be in three states: WithdrawnState (neither the window nor icon visible), NormalState (the window visible) or IconicState (the icon window or pixmap visible). This information is contained in the WM_STATE property but ordinary clients are not supposed to look at that (its values have not yet been standardised). Movement between the three states is standardised by ICCCM.Go Back Up