This includes 2 new methods wxVariant::IsValueKindOf() and wxVariantData::GetValueClassInfo() to allow query of the wxRTTI data of the variant's data. Also included is a macro analogues to dynamicCast for fetching objects out of a wxVariant. Documentation patches for the above. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@20860 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775