-#if __WXMSW__
- wxDialog dlg(this, -1, "About", wxDefaultPosition, wxSize(400, 250), wxDIALOG_MODAL | wxDEFAULT_DIALOG_STYLE);
-#else
- wxDialog dlg(this, -1, "About", wxDefaultPosition, wxSize(400, 230), wxDIALOG_MODAL | wxDEFAULT_DIALOG_STYLE);
-#endif
+ wxDialog dlg(this, -1, wxString("About"));
+
+ topsizer = new wxBoxSizer(wxVERTICAL);