Ttk is the Tile extension integrated into Tk as approved in TIP #248 [L1 ].
This page details the transition from the existing Tile extension to Ttk package inside the Tk source base.
The Ttk package will be a static package inside Tk. It will not be made a separate binary library. It will use the ttk:: namespace for the most part, sharing the tk:: namespace where appropriate. The classic Tk widgets will all be referenceable from the tk::' namespace, in addition to remaining as toplevel commands (for 8.x at least).
Current tile source base tile: => tk aclocal.m4 => ChangeLog => configure* => configure.in => demos/ => doc/ => generic/ => library/ => license.terms => macosx/ => Makefile.in => README.txt => tclconfig/ => tests/ => tools/ => win/ => tile/demos: => tk/demos autocomplete.tcl => demo.tcl => dirbrowser.tcl => dlgtest.tcl => iconlib.tcl => repeater.tcl => themes/ => toolbutton.tcl => tile/demos/themes: => blue/ => tk/demos/blue_theme blue.tcl => pkgIndex.tcl => tile/demos/themes/blue: => (image based theme files) => tile/doc: => tk/doc button.n => ttk_ checkbutton.n => ttk_ combobox.n => ttk_ converting.txt => ttk_converting.n dialog.n => ttk_ entry.n => ttk_ frame.n => ttk_ Geometry.3 => ttk_ image.n => ttk_ labelframe.n => ttk_ label.n => ttk_ Makefile => man.macros => menubutton.n => ttk_ notebook.n => ttk_ paned.n => ttk_ progressbar.n => ttk_ radiobutton.n => ttk_ scrollbar.n => ttk_ separator.n => ttk_ style.n => ttk_ Theme.3 => ttk_ tile-intro.n => ttk_intro.n TILE.XML => tmml.options => treeview.n => ttk_ widget.n => ttk_ tile/generic: => tk/generic altTheme.c => ttkDefaultTheme.c blink.c => button.c => ttkButton.c cache.c => ttkCache.c clamTheme.c => remove? classicTheme.c => remove? compat.h => configure* => configure.in => entry.c => ttkEntry.c frame.c => ttkFrame.c gunk.h => image.c => ttkImage.c label.c => ttkLabel.c layout.c => ttkLayout.c Makefile.in => manager.c => manager.h => notebook.c => paned.c => pkgIndex.tcl.in => progress.c => scale.c => scrollbar.c => scroll.c => separator.c => square.c => stepTheme.c => tile.c => tkElements.c => tkstate.c => tkTheme.c => tkTheme.h => tkThemeInt.h => TODO => trace.c => track.c => treeview.c => ttk.decls => ttkDecls.h => ttkStubInit.c => ttkStubLib.c => widget.c => widget.h => tile/library: => altTheme.tcl => aquaTheme.tcl => button.tcl => ttk_$0.tcl (t$0.tcl?) clamTheme.tcl => classicTheme.tcl => combobox.tcl => ttk_$0.tcl (t$0.tcl?) cursors.tcl => ttk_$0.tcl (t$0.tcl?) defaults.tcl => dialog.tcl => remove entry.tcl => ttk_$0.tcl (t$0.tcl?) fonts.tcl => ttk_$0.tcl (t$0.tcl?) icons.tcl => ttk_$0.tcl (t$0.tcl?) keynav.tcl => menubutton.tcl => ttk_$0.tcl (t$0.tcl?) notebook.tcl => ttk_$0.tcl (t$0.tcl?) paned.tcl => ttk_panedwindow.tcl (tpanedwindow.tcl?) progress.tcl => ttk_progressbar.tcl (tprogressbar.tcl?) scale.tcl => ttk_$0.tcl (t$0.tcl?) scrollbar.tcl => ttk_$0.tcl (t$0.tcl?) stepTheme.tcl => tile.tcl => ttk.tcl treeview.tcl => ttk_$0.tcl (t$0.tcl?) winTheme.tcl => xpTheme.tcl* => tile/macosx: => tk/macosx aquaTheme.c => ttkMacOSXAquaTheme.c tile/tclconfig: => install-sh* => kde-qt.m4 => tcl.m4 => teax.m4 => tile/tests: => tk/tests all.tcl => merge bwidget.test => remove cbtest.tcl => ttk_cbtest.tcl compound.tcl => ttk_compound.tcl entry.test => ttk_entry.test entrytest.tcl => image.test => labelframe.tcl => labelframe.test => layout.test => mbtest.tcl => notebook.test => paned.test => progress.test => sbtest.tcl => scrollbar.test => testutils.tcl => tile.test => treeview.test => tvtest.tcl => validate.test => tile/tools: => tk/tools genStubs.tcl => optiondiff.tcl => tile/win: => tk/win makefile.vc => monitor.c => nmakehlp.c => rules.vc => Tile.dsp => winTheme.c => ttkWinTheme.c xpTheme.c => ttkWinXPTheme.c