Bug#749659: audacity: Please update to use wxwidgets3.0

[Olly Betts]

On Thu, May 29, 2014 at 10:52:30AM +1200, Olly Betts wrote:
> As far as I can make out, Audacity uses the generic implementation of
> this dialog because it wants to add an extra button.  I've filed a bug
> with wx upstream to ask about the removal of this class, as this change
> isn't documented in the list of changes since 2.8.  Here's that ticket:
> 
> http://trac.wxwidgets.org/ticket/16300

wx upstream's impressively rapid response:

| I admit I haven't thought of anybody using the generic dialogs under GTK
| intentionally, in my mind the use of them for (very old) GTK+ version
| was nothing more than an implementation detail. I really don't think we
| want to add it back, and it's not even in wxMSW (although it is in wxOSX
| for some weird reason).
| 
| The advice would be to use wxFileDialog::SetExtraControlCreator() to add
| custom button to the native dialog, this works fine in wxGTK and is the
| best solution.
| 
| Otherwise they can always take filedlgg.cpp and link it with their
| sources.

Cheers,
    Olly