Ttk_CreateTheme, Ttk_GetTheme, Ttk_GetDefaultTheme, Ttk_GetCurrentTheme - create and use Tk themes.

       Tcl_Interp * interp (in)                  The  Tcl  interpreter  in  which  to  register/query  available
                                                 themes.

       Ttk_Theme parentTheme (in)                Fallback or parent theme from which the new theme will  inherit
                                                 elements and layouts.

       const char * name (in)                    The name of the theme.
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       Ttk_CreateTheme, Ttk_GetTheme, Ttk_GetDefaultTheme, Ttk_GetCurrentTheme - create and use Tk themes.

       Ttk_RegisterLayout, Ttk_BuildLayout

Tk                                                     8.5                                  Ttk_CreateTheme(3tk)

       Ttk_Theme Ttk_CreateTheme(interp, name, parentTheme);
       Ttk_Theme Ttk_GetTheme(interp, name);
       Ttk_Theme Ttk_GetDefaultTheme(interp);
       Ttk_Theme Ttk_GetCurrentTheme(interp);