Don't Sync() if there is no buffer. This allows derived classes that handle the buffer differently (e.g. reuse the buffer).


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76386 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Draw an unknown field using a fallback field type, so it's not invisible.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76389 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Added wxRichTextCtrl::DoLayoutBuffer so an application can perform custom tasks before or after layout.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76390 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775