#ifndef wxHAS_NATIVE_ART_PROVIDER_IMPL
/*static*/
-wxSize wxArtProvider::GetNativeSizeHint(const wxArtClient& client)
+wxSize wxArtProvider::GetNativeSizeHint(const wxArtClient& WXUNUSED(client))
{
// rather than returning some arbitrary value that doesn't make much
// sense (as 2.8 used to do), tell the caller that we don't have a clue: