Sorry, I can't get your code to work in my program. I am trying to get an about box to look the way I want to. Here is my code. Can you move the two labels left and right of center. I would like to eventually have a icon picture to the right of the two labels and a list box below.
# Lemniscate Curve
from Tkinter import *
root = Tk()
# create the root window
root.title('Lemniscate Curve')
canvas = Canvas(root, width =815, height=560)
def showAbout():
t1 = Toplevel(root)
t1.geometry("430x300")
t1.title('About Lemniscate')
Label(t1, text='Draw Lemniscate Curve', font=("Arial", 14)).pack(pady=30) # Can you get ride of the 'pack'?
Label(t1, text='Programer: Dan Webb', font=("Arial", 14)).pack()
# create a menu
menu = Menu(root)
root.config(menu=menu)
filemenu = Menu(menu)
#menu.add_cascade(label="About", menu=filemenu)
menu.add_command(label="About", command=showAbout)
#canvas.create_bitmap(355, 53, bitmap='questhead')
canvas.create_line(50, 280, 750, 280, width=2) # fill='purple'
canvas.create_line(400, 50, 400, 510, width=2)
def CalulateY(x):
a = 300.0
yh = 120.0
yl = 0.0
y = 125.0
for i in range(0,20):
dhl = yh - yl
if (dhl < 0.1):
return y
y = (yh + yl) / 2.0
x2 = x*x
y2 = y*y
t = x2 + y2
dif = t * t - a * a * (x2 - y2)
if (dif > 0):
yh = y;
else:
yl = y;
XplotS = 400
YplotS = 280
XplotS2 = 400
YplotS2 = 280
XplotS3 = 400
YplotS3 = 280
XplotS4 = 400
YplotS4 = 280
for x in range(1,301):
y = CalulateY(x)
XplotE = 400 + x
YplotE = 280 + y
canvas.create_line(XplotS, YplotS, XplotE, YplotE, width=2, fill='purple')
XplotS = XplotE
YplotS = YplotE
XplotE2 = 400 + x
YplotE2 = 280 - y
canvas.create_line(XplotS2, YplotS2, XplotE2, YplotE2, width=2, fill='purple')
XplotS2 = XplotE2
YplotS2 = YplotE2
XplotE3 = 400 - x
YplotE3 = 280 + y
canvas.create_line(XplotS3, YplotS3, XplotE3, YplotE3, width=2, fill='purple')
XplotS3 = XplotE3
YplotS3 = YplotE3
XplotE4 = 400 - x
YplotE4 = 280 - y
canvas.create_line(XplotS4, YplotS4, XplotE4, YplotE4, width=2, fill='purple')
XplotS4 = XplotE4
YplotS4 = YplotE4
canvas.pack()
root.mainloop()
With the Tkinter GUI toolkit there a several ways to layout the position of the widgets. Here is an example of an absolute place layout ...
# set position and size of a Tkinter window
# also set the position of any widgets using place(x, y) layout
try:
# Python2
import Tkinter as tk
except ImportError:
# Python3
import tkinter as tk
# create the root window
root = tk.Tk()
# optionally give it a title
root.title("My Title")
# set the root window's height, width and x,y position
# x and y are the coordinates of the upper left corner
w = 300
h = 200
x = 50
y = 100
# use width x height + x_offset + y_offset (no spaces!)
root.geometry("%dx%d+%d+%d" % (w, h, x, y))
# use a colorful frame
frame = tk.Frame(root, bg='green')
frame.pack(fill='both', expand='yes')
# position a label on the frame using place(x, y)
# place(x=0, y=0) would be the upper left frame corner
label = tk.Label(frame, text="Hello Python Programmer!")
label.place(x=20, y=30)
# put the button below the label, change y coordinate
button = tk.Button(frame, text="Press me", bg='yellow')
button.place(x=20, y=60)
root.mainloop()
