added demo for it in the sample and documented
2. wxMimeTypeManager works a bit better under Windows (doesn't ignore the
extensions without filetypes)
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4850 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fixed some compilation warnings,
Minor change to OpenGL code.
Documented wxImageHandler::GetImageCount() and related.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4784 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775