A panel adds a border and label to a group of controls, and can be
minimised (either automatically to conserve space, or manually by the user).
+
+ Non ribbon controls can be placed on a panel using wxSizers to manage
+ layout. Panel size is governed by the sizer's minimum calculated size and
+ the parent wxRibbonPage's dimensions. For functional and aesthetic reasons
+ it is recommended that ribbon and non ribbon controls are not mixed in one
+ panel.
@sa wxRibbonPage