/* so, override wxButton::GTKGetWindow and return NULL as GTK+ doesn't */ \
/* give us access to the internal GdkWindow of a GtkFileChooserButton */ \
protected: \
- virtual GdkWindow *GTKGetWindow(wxArrayGdkWindows& windows) const \
+ virtual GdkWindow * \
+ GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const \
{ return NULL; }