This video demonstrate how calculator GUI can design with Tcl-Tk script. Gui have planned with the #GUI with #label widget #button widget. The evaluation processed using tcl command #set, #append and #exit.
Another relevant video
Tcl to Exe
https://youtu.be/bAKCmlg0J7w
Tk button command
https://youtu.be/03WIy5lhYTk
Tk widget configuration
https://youtu.be/bGt3GIuw7hQ
Tk Widgets
https://youtu.be/QnWVo3Q3Zz0
