Define wxPG toolbar event handler only if library is compiled with toolbar classes.

Include wxPropertyGridManager::OnToolbarClick() code only if wxUSE_TOOLBAR is set to 1.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78214 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/propgrid/manager.h

@@ -656,7 +656,9 @@ protected:
 
     void OnPaint( wxPaintEvent &event );
 
+#if wxUSE_TOOLBAR
     void OnToolbarClick( wxCommandEvent &event );
+#endif
     void OnResize( wxSizeEvent& event );
     void OnPropertyGridSelect( wxPropertyGridEvent& event );
     void OnPGColDrag( wxPropertyGridEvent& event );