wxruby users - Jul 2006 - SWIGging clipboard

Hi all

I''m having a go at porting the Clipboard and DnD classes, going OK, but
have hit a snag where I could use your help.

I''ve added several relevant classes, but now I have on OS X missing
symbols:
wxDataObjectBase::GetDataHere(wxDataFormat const&, void*) const
wxDataObjectBase::GetDataSize(wxDataFormat const&) const

DataObjectBase is an internal base class for DataObject. It''s defined
in
the platform-neutral wx/dataobj.h, which has

class WXDLLEXPORT wxDataObjectBase
{
    ...
    // get the (total) size of data for the given format
    virtual size_t GetDataSize(const wxDataFormat& format) const = 0;

    // copy raw data (in the specified format) to the provided buffer, 
return
    // true if data copied successfully, false otherwise
    virtual bool GetDataHere(const wxDataFormat& format, void *buf) 
const = 0;


wx/dataobj.h then includes a platform-specific header file; on OS X, the 
relevant content is:

class WXDLLEXPORT wxDataObject : public wxDataObjectBase

with no further declaration of GetDataSize in there, except later in 
derived classes (eg DataObjectSimple)

I''m a bit stuck as to what''s going on here - is the missing
symbol b/c
there''s no Ruby class called DataObjectBase? Is there some way I can 
work round this.

TIA
alex

Alex Fenton wrote (long ago):
> Hi all
>
> I''m having a go at porting the Clipboard and DnD classes, going
OK, but
> have hit a snag where I could use your help.
>
> I''ve added several relevant classes, but now I have on OS X
missing symbols:
> wxDataObjectBase::GetDataHere(wxDataFormat const&, void*) const
> wxDataObjectBase::GetDataSize(wxDataFormat const&) const
This is the same behavior I''m getting on Windows, too.  I
don''t know my
C++ well enough to know why this happens.  I think the best way to avoid 
it is to %ignore those functions at we won''t override like that.  I got
sidetracked working on the clipboard because I decided to upgrade to 
head SWIG.  Hopefully all this will mean a painless upgrade to 1.3.30 
when it''s finally released.

Roy