\twocolitem{\helpref{wxGridBagSizer}{wxgridbagsizer}}{Another grid sizer that lets you specify the cell an item is in, and items can span rows and/or columns.}
\twocolitem{\helpref{wxBoxSizer}{wxboxsizer}}{A sizer for laying out windows in a row or column}
\twocolitem{\helpref{wxStaticBoxSizer}{wxstaticboxsizer}}{Same as wxBoxSizer, but with a surrounding static box}
-\twocolitem{\helpref{wxNotebookSizer}{wxnotebooksizer}}{Sizer to use with the wxNotebook control}
\end{twocollist}
\overview{Constraints overview}{constraintsoverview} describes constraints-based layout.
\twocolitem{\helpref{wxSpinEvent}{wxspinevent}}{An event from \helpref{wxSpinButton}{wxspinbutton}}
\twocolitem{\helpref{wxSysColourChangedEvent}{wxsyscolourchangedevent}}{A system colour change event}
\twocolitem{\helpref{wxTabEvent}{wxtabevent}}{A tab control event}
+\twocolitem{\helpref{wxTimerEvent}{wxtimerevent}}{A timer expiration event}
\twocolitem{\helpref{wxTreeEvent}{wxtreeevent}}{A tree control event}
\twocolitem{\helpref{wxUpdateUIEvent}{wxupdateuievent}}{A user interface update event}
\twocolitem{\helpref{wxWizardEvent}{wxwizardevent}}{A wizard event}