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/toolbar.h

@@ -155,6 +155,9 @@ public:
     virtual void EnableTool(int tool_id, bool enable = true);
     virtual void ToggleTool(int tool_id, bool checked);
 
+    // Finds the best width and height given the parent's width and height
+    virtual wxSize GetBestSizeForParentSize(const wxSize& parentSize) const;
+
 protected:
     friend class wxRibbonToolBarEvent;
     virtual wxSize DoGetBestSize() const;