Use File: Save and File: Save as or the equivalent toolbar button to save the current dialog(s) in a wxWindows resource file (extension .wxr).
The .wxr file can be used directly in a wxWindows program, if wxWindows resources have been enabled when building the wxWindows library. These files can be loaded dynamically, or included directly into program source with a #include directive. See the wxWindows user manual for further details.