[wxMac 2.7.0] wxDataView classes and examples should be updated

[H]

Hi!

After a message here in the newsgroup I tried to compile the wxDataView 
sample. It did not work because pop-up windows are not implemented for 
MacOSX, I suppose.
The wxDataView class makes use of pop-up windows when displaying dates. 
So, all methods related to dates should be enabled/disabled/surrounded 
by 

#if wxUSE_POPUPWIN
... code ...
#endif

Then, the wxDataView sample works but the output is ugly (at least on 
MacOSX).

Hartwig