Added wxRIBBON_PANEL_FLEXIBLE flag to allow toolbars to wrap, taking up the optimum amount of space when used in a vertical palette.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70885 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/ribbon/control.h

@@ -55,6 +55,9 @@ public:
     virtual bool Realize();
     bool Realise() {return Realize();}
 
+    // Finds the best width and height given the parent's width and height
+    virtual wxSize GetBestSizeForParentSize(const wxSize& WXUNUSED(parentSize)) const { return GetBestSize(); }
+
 protected:
     wxRibbonArtProvider* m_art;