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you definitely want to use place() don't get into this, you'll regret it
Edit: once you get the hang of it, it is the easiest thing you could use
place() can still use x=, y=, so that can be used for making other important widgets
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from Tkinter import *
root = Tk()
root.title('Model Definition')
root.geometry('{}x{}'.format(460, 350))
# create all of the main containers
top_frame = Frame(root, bg='cyan', width=450, height=50, pady=3)
center = Frame(root, bg='gray2', width=50, height=40, padx=3, pady=3)
btm_frame = Frame(root, bg='white', width=450, height=45, pady=3)
btm_frame2 = Frame(root, bg='lavender', width=450, height=60, pady=3)
# layout all of the main containers
root.grid_rowconfigure(1, weight=1)
root.grid_columnconfigure(0, weight=1)
top_frame.grid(row=0, sticky="ew")
center.grid(row=1, sticky="nsew")
btm_frame.grid(row=3, sticky="ew")
btm_frame2.grid(row=4, sticky="ew")
# create the widgets for the top frame
model_label = Label(top_frame, text='Model Dimensions')
width_label = Label(top_frame, text='Width:')
length_label = Label(top_frame, text='Length:')
entry_W = Entry(top_frame, background="pink")
entry_L = Entry(top_frame, background="orange")
# layout the widgets in the top frame
model_label.grid(row=0, columnspan=3)
width_label.grid(row=1, column=0)
length_label.grid(row=1, column=2)
entry_W.grid(row=1, column=1)
entry_L.grid(row=1, column=3)
# create the center widgets
center.grid_rowconfigure(0, weight=1)
center.grid_columnconfigure(1, weight=1)
ctr_left = Frame(center, bg='blue', width=100, height=190)
ctr_mid = Frame(center, bg='yellow', width=250, height=190, padx=3, pady=3)
ctr_right = Frame(center, bg='green', width=100, height=190, padx=3, pady=3)
ctr_left.grid(row=0, column=0, sticky="ns")
ctr_mid.grid(row=0, column=1, sticky="nsew")
ctr_right.grid(row=0, column=2, sticky="ns")
root.mainloop()
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# import tkinter module
from tkinter import * from tkinter.ttk import *
# creating main tkinter window/toplevel
master = Tk()
# this will create a label widget
l1 = Label(master, text = "Height")
l2 = Label(master, text = "Width")
# grid method to arrange labels in respective
# rows and columns as specified
l1.grid(row = 0, column = 0, sticky = W, pady = 2)
l2.grid(row = 1, column = 0, sticky = W, pady = 2)
# entry widgets, used to take entry from user
e1 = Entry(master)
e2 = Entry(master)
# this will arrange entry widgets
e1.grid(row = 0, column = 1, pady = 2)
e2.grid(row = 1, column = 1, pady = 2)
# checkbutton widget
c1 = Checkbutton(master, text = "Preserve")
c1.grid(row = 2, column = 0, sticky = W, columnspan = 2)
# adding image (remember image should be PNG and not JPG)
img = PhotoImage(file = r"C:\Users\Admin\Pictures\capture1.png")
img1 = img.subsample(2, 2)
# setting image with the help of label
Label(master, image = img1).grid(row = 0, column = 2,
columnspan = 2, rowspan = 2, padx = 5, pady = 5)
# button widget
b1 = Button(master, text = "Zoom in")
b2 = Button(master, text = "Zoom out")
# arranging button widgets
b1.grid(row = 2, column = 2, sticky = E)
b2.grid(row = 2, column = 3, sticky = E)
# infinite loop which can be terminated
# by keyboard or mouse interrupt
mainloop()
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from Tkinter import *
root = Tk()
root.title('Model Definition')
root.resizable(width=FALSE, height=FALSE)
root.geometry('{}x{}'.format(460, 350))
top_frame = Frame(root, bg='cyan', width = 450, height=50, pady=3).grid(row=0, columnspan=3)
Label(top_frame, text = 'Model Dimensions').grid(row = 0, columnspan = 3)
Label(top_frame, text = 'Width:').grid(row = 1, column = 0)
Label(top_frame, text = 'Length:').grid(row = 1, column = 2)
entry_W = Entry(top_frame).grid(row = 1, column = 1)
entry_L = Entry(top_frame).grid(row = 1, column = 3)
#Label(top_frame, text = '').grid(row = 2, column = 2)
center = Frame(root, bg='gray2', width=50, height=40, padx=3, pady=3).grid(row=1, columnspan=3)
ctr_left = Frame(center, bg='blue', width=100, height=190).grid(column = 0, row = 1, rowspan = 2)
ctr_mid = Frame(center, bg='yellow', width=250, height=190, padx=3, pady=3).grid(column = 1, row=1, rowspan=2)
ctr_right = Frame(center, bg='green', width=100, height=190, padx=3, pady=3).grid(column = 2, row=1, rowspan=2)
btm_frame = Frame(root, bg='white', width = 450, height = 45, pady=3).grid(row = 3, columnspan = 3)
btm_frame2 = Frame(root, bg='lavender', width = 450, height = 60, pady=3).grid(row = 4, columnspan = 3)
root.mainloop()
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# import tkinter module
from tkinter import * from tkinter.ttk import *
# creating main tkinter window/toplevel
master = Tk()
# this will create a label widget
l1 = Label(master, text = "First:")
l2 = Label(master, text = "Second:")
# grid method to arrange labels in respective
# rows and columns as specified
l1.grid(row = 0, column = 0, sticky = W, pady = 2)
l2.grid(row = 1, column = 0, sticky = W, pady = 2)
# entry widgets, used to take entry from user
e1 = Entry(master)
e2 = Entry(master)
# this will arrange entry widgets
e1.grid(row = 0, column = 1, pady = 2)
e2.grid(row = 1, column = 1, pady = 2)
# infinite loop which can be terminated by keyboard
# or mouse interrupt
mainloop()
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from tkinter import *
from tkinter import ttk
root = Tk()
content = ttk.Frame(root)
frame = ttk.Frame(content, borderwidth=5, relief="ridge", width=200, height=100)
namelbl = ttk.Label(content, text="Name")
name = ttk.Entry(content)
onevar = BooleanVar(value=True)
twovar = BooleanVar(value=False)
threevar = BooleanVar(value=True)
one = ttk.Checkbutton(content, text="One", variable=onevar, onvalue=True)
two = ttk.Checkbutton(content, text="Two", variable=twovar, onvalue=True)
three = ttk.Checkbutton(content, text="Three", variable=threevar, onvalue=True)
ok = ttk.Button(content, text="Okay")
cancel = ttk.Button(content, text="Cancel")
content.grid(column=0, row=0)
frame.grid(column=0, row=0, columnspan=3, rowspan=2)
namelbl.grid(column=3, row=0, columnspan=2)
name.grid(column=3, row=1, columnspan=2)
one.grid(column=0, row=3)
two.grid(column=1, row=3)
three.grid(column=2, row=3)
ok.grid(column=3, row=3)
cancel.grid(column=4, row=3)
root.mainloop()