Returns whether the extended user interface should use Windows XP themes
                virtual bool ShouldUseThemes( );  | 
            
Returns true if the extended user interface should use Windows XP themes. By default a registry returns true; you can turn the functionality off by calling SetShouldUseThemes.
        Under Visual Studio .NET, the default value is false.
        You should use SetShouldUseThemes(true) if you need theme support.
      
Header: xlwizexui.h
CXlWizExUIFunctionRegistry Class | CXlWizExUIFunctionRegistry Methods