Added missing RTTI


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73643 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Search for font instead of creating it each time


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73644 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775