#if wxUSE_PROPGRID
+class WXDLLIMPEXP_FWD_PROPGRID wxPGCell;
+class WXDLLIMPEXP_FWD_PROPGRID wxPGProperty;
+class WXDLLIMPEXP_FWD_PROPGRID wxPropertyGrid;
+
// -----------------------------------------------------------------------
// wxPGWindowList contains list of editor windows returned by CreateControls.