2. wrote input handlers for the checkbox
3. fixed bug in wXMouseEvent generation in gtk/window.cpp
4. added focus rect drawing and check/radio geometry queries to wxRenderer
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/wxUNIVERSAL@8309 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775