aa96f01c02
sometimes seem to save data in an extra field. The
original author of the patch chose to save it in char*
so I kept that, although void* would probably be correct.
The patch is against 2.4.2 and the code has been reshuffled
since then so that the patch had to be redone entirely.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32443 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775