How to change ttk.Treeview column width and weight in Python 3.3 -

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i have created gui application tkinter. using treeview widget. unable change column widths , weights. how properly?

sample:

tree = treeview(frames[-1],selectmode="extended",columns=("a","b")) tree.heading("#0", text="c/c++ compiler") tree.column("#0",minwidth=0,width=100)  tree.heading("a", text="a")    tree.column("a",minwidth=0,width=200)   tree.heading("b", text="b")    tree.column("b",minwidth=0,width=300)

as far understand should create 3 columns widths: 100,200 , 300. nothing happens.

treeview.column not have weight option, can set stretch option false prevent column resizing.

from tkinter import * tkinter.ttk import *  root = tk() tree = treeview(root,selectmode="extended",columns=("a","b")) tree.pack(expand=yes, fill=both) tree.heading("#0", text="c/c++ compiler") tree.column("#0",minwidth=0,width=100, stretch=no) tree.heading("a", text="a")    tree.column("a",minwidth=0,width=200, stretch=no)  tree.heading("b", text="b")    tree.column("b",minwidth=0,width=300) root.mainloop()

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