Mega Code Archive

 

Categories / Python / GUI Tk

 

Bound Scale action with a canvas

from Tkinter import * import string def setHeight(canvas, heightStr):     height = string.atoi(heightStr)     height = height + 21     y2 = height - 30     if y2 < 21:         y2 = 21     canvas.coords('poly', 15,20,35,20,35,y2,45,y2,25,height,5,y2,15,y2,15,20)     canvas.coords('line', 15,20,35,20,35,y2,45,y2,25,height,5,y2,15,y2,15,20) root = Tk() root.title('Scale') canvas = Canvas(root, width=50, height=50, bd=0, highlightthickness=0) canvas.create_polygon(0,0,1,1,2,2, fill='cadetblue', tags='poly') canvas.create_line(0,0,1,1,2,2,0,0, fill='black', tags='line') scale = Scale(root,                orient=VERTICAL,                length=284,                from_=0,                to=250,               tickinterval=50,                command=lambda h, c=canvas:setHeight(c,h)) scale.grid(row=0, column=0, sticky='NE') canvas.grid(row=0, column=1, sticky='NWSE') scale.set(100) root.mainloop()