1. wxPostEvent added and documented

2. Made it possible to have wxDataObjects which support multiple formats
   painlessly
3. Extensively modified dnd sample to show a "real life" wxDataObject


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4028 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/data.cpp

@@ -37,12 +37,6 @@ wxWindowList wxTopLevelWindows;
 // List of windows pending deletion
 wxList WXDLLEXPORT wxPendingDelete;
 
-// List of events pending processing
-#if wxUSE_THREADS
-wxList *wxPendingEvents = NULL;
-wxCriticalSection *wxPendingEventsLocker = NULL;
-#endif
-
 // Current cursor, in order to hang on to
 // cursor handle when setting the cursor globally
 wxCursor *g_globalCursor = NULL;