porting back support for GetSelection(from,to)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@58883 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/combobox.h

@@ -103,6 +103,7 @@ class WXDLLEXPORT wxComboBox : public wxControl, public wxComboBoxBase
     virtual void Copy();
     virtual void Cut();
     virtual void Paste();
+    
     virtual void SetInsertionPoint(long pos);
     virtual void SetInsertionPointEnd();
     virtual long GetInsertionPoint() const;
@@ -113,6 +114,10 @@ class WXDLLEXPORT wxComboBox : public wxControl, public wxComboBoxBase
     virtual void SetEditable(bool editable);
     virtual bool IsEditable() const;
 
+#if wxABI_VERSION >= 20810
+    void GetSelection( long* from, long* to ) const;
+#endif
+
     virtual unsigned int GetCount() const;
 
     virtual void Undo();

src/mac/carbon/combobox.cpp

@@ -523,6 +523,12 @@ void wxComboBox::SetSelection(long from, long to)
         m_text->SetSelection(from,to);
 }
 
+void wxComboBox::GetSelection(long *from, long* to) const
+{
+    if ( m_text )
+        m_text->GetSelection(from,to);
+}
+
 int wxComboBox::DoAppend(const wxString& item)
 {
     return m_choice->DoAppend( item ) ;