Btukfyl

Good day all

I'm busy creating a small costing calculator for the signage department.
I'm not getting the calculator to output the amount.

Brief Description:
You enter the height and width and then when you hit enter it needs to display the cost.

How do I get it to work? Any suggestions please and thanks.

from tkinter import *

from tkinter import ttk



#Define the Functions here

def squeare(height,width):

    cost = ((float(height) * float(width))/1000000 * 650 * 1.15 * 1.50)

    return cost



window = Tk()

window.title("Costing Calculator V1.0")



mainframe = ttk.Frame(window, padding="20 20 20 20")

mainframe.grid(column=0, row=0, sticky=(N, W, E, S))

window.columnconfigure(0, weight=1)

window.rowconfigure(0, weight=1)



height = StringVar()

width = StringVar()



#ttk.Label(mainframe, text="H").grid(column=1, row=1, sticky=E)

height_entry = ttk.Entry(mainframe, width=7, textvariable=height)

height_entry.grid(column=3, row=1, sticky=(W,E))



ttk.Label(mainframe, text="X").grid(column=5, row=1, sticky=E)



#ttk.Label(mainframe, text="W").grid(column=6, row=1, sticky=E)

width_entry = ttk.Entry(mainframe, width=7, textvariable=width)

width_entry.grid(column=7, row=1, sticky=(W,E))



ttk.Label(mainframe, text="=").grid(column=8, row=1, sticky=E)



#call function

#squeare()



window.mainloop()

I have bound the window frame with the return key. There is an empty result label. Whenever you press the enter key, its text will be updated.

from tkinter import *

from tkinter import ttk



def squeare(height, width):

    cost = float(height) * float(width)/1000000 * 650 * 1.15 * 1.50

    result.configure(text=str(cost))



window = Tk()

window.title("Costing Calculator V1.0")



mainframe = ttk.Frame(window, padding="20 20 20 20")

mainframe.grid(column=0, row=0, sticky="nsew")

window.columnconfigure(0, weight=1)

window.rowconfigure(0, weight=1)



height = StringVar()

height.set(0)

width = StringVar()

width.set(0)



height_entry = ttk.Entry(mainframe, width=7, textvariable=height)

height_entry.grid(column=0, row=0, sticky="we")



ttk.Label(mainframe, text="X").grid(column=1, row=0, sticky="e")



width_entry = ttk.Entry(mainframe, width=7, textvariable=width)

width_entry.grid(column=2, row=0, sticky=(W,E))



ttk.Label(mainframe, text="=").grid(column=3, row=0, sticky="e")

result = ttk.Label(mainframe)

result.grid(row=0, column=4)



window.bind('<Return>', lambda e: squeare(height.get(), width.get()))



window.mainloop()

The is to catch the 'enter' event for the second input field.

from tkinter import *

from tkinter import ttk



#Define the Functions here

def squeare(height,width):

    cost = ((float(height) * float(width))/1000000 * 650 * 1.15 * 1.50)

    result.configure(text=str(cost))





def enter(event=None):

    squeare(height.get(), width.get())



window = Tk()

window.title("Costing Calculator V1.0")



mainframe = ttk.Frame(window, padding="20 20 20 20")

mainframe.grid(column=0, row=0, sticky=(N, W, E, S))

window.columnconfigure(0, weight=1)

window.rowconfigure(0, weight=1)



height = StringVar()

width = StringVar()



#ttk.Label(mainframe, text="H").grid(column=1, row=1, sticky=E)

height_entry = ttk.Entry(mainframe, width=7, textvariable=height)

height_entry.grid(column=3, row=1, sticky=(W,E))



ttk.Label(mainframe, text="X").grid(column=5, row=1, sticky=E)



#ttk.Label(mainframe, text="W").grid(column=6, row=1, sticky=E)

width_entry = ttk.Entry(mainframe, width=7, textvariable=width)

width_entry.grid(column=7, row=1, sticky=(W,E))



width_entry.bind('<Return>',enter)



ttk.Label(mainframe, text="=").grid(column=8, row=1, sticky=E)

result = ttk.Label(mainframe, text="")

result.grid(column=9, row=1, sticky=E)



window.mainloop()