TK_WINDOWING_SYSTEM 9882 ext/tk/tcltklib.c #define TK_WINDOWING_SYSTEM "win32"
TK_WINDOWING_SYSTEM 9885 ext/tk/tcltklib.c #define TK_WINDOWING_SYSTEM "classic"
TK_WINDOWING_SYSTEM 9888 ext/tk/tcltklib.c #define TK_WINDOWING_SYSTEM "aqua"
TK_WINDOWING_SYSTEM 9890 ext/tk/tcltklib.c #define TK_WINDOWING_SYSTEM "x11"