Creating a pop-out Gui from another Gui

[Brandon Hatch]

I have no idea how to create a Gui from another Gui using python. What I have so far is simply a basic Gui which you select one of the options from a dropdown menu and create another Gui. Here's what I have so far...

import sys
from tkinter import *

#def m

forces = []

def mCalculate():
    mtext = mass.get()
    mtext2 = acceleration.get()
    mlabel = Label(mGui,text = mtext * mtext2).pack()
    forces.append(mCalculate)
    return

def mGraph():
    messagebox.showinfo(title="Graphs",message="Graph option 1")
    return

def secondGui Tk():
    secondGui.title('Second Gui')
    button = Button(text = 'Graph these points', command = mGraph).pack()


def mGraphAction():
    mPoints = forces

mGui = Tk()
mass = DoubleVar()
acceleration = DoubleVar()

mGui.geometry('650x550+500+500')
mGui.title('Simple Newton Gui')

menubar = Menu (mGui)
graphmenu = Menu (mGui)

filemenu = Menu(menubar)
filemenu.add_command(label="First Gui option"""", command = secondGui""")
filemenu.add_command(label="Second Gui option")
filemenu.add_command(label="Third Gui option")
filemenu.add_command(label="Fourth Gui option")
menubar.add_cascade(label="Gui sub menus",menu = filemenu)

graphmenu.add_command(label="Graph this as a slope!",command = mGraphAction)
graphmenu.add_command(label="Graph Gui",command = secondGui)
graphmenu.add_command(label="Third Graph option")
graphmenu.add_command(label="Fourth Graph option")
menubar.add_cascade(label="Graph options",menu = graphmenu)

mGui.config(menu=menubar)

mlabel = Label(text='Input the Mass please.', fg='red').pack()
mEntry = Entry(mGui,textvariable=mass).pack()
mlabel = Label(text='Inupt the Acceleration please.', fg='red').pack()
mEntry2 = Entry(mGui, textvariable=acceleration).pack()
mbutton = Button(text = 'Calculate',command = mCalculate).pack()

I'm not sure how to define the second Gui, also while I'm here, I would like to take the output from the two inputs and append it into a list where every time the user clicks 'Calculate', you would get number++ ie. user input 12.5, user input 2.0, output = 25.0... [1, 25.0] then another input of 13.5, input 2.0, ouput 27.0... [1,25.0,2,27.0] etc. I would like to know if this kind of appending is possible, or if there's a better way to do it.

[Gribouillis]

You need to create a Toplevel window. There is a good example in the famous blog Mouse vs Python.

Also study how Mike Driscoll uses of a class App in this example, in order to encapsulate tkinter code.

The example was written for python 2, but it shouldn't be too difficult to adapt it to python 3.

[Brandon Hatch]

Thank you very much, that solves the whole multiple frames problem, but I am still wondering if the appending stated above is possible.

[Gribouillis]

I dont understand how you want to get this user input, nor why it could not be possible to append values to a list. You only need to define a global list and call its append() method when needed.

[Brandon Hatch]

Ok, so i have everything good to go, except I'm working on the appending thing, and everything works except my counter. Both my force and counter correctly get appended to the list like I want them, but instead of going up by 1 each time i press calculate, the number stays at a constant 1. Here's the part where i define the list and counter.

        self.counter = Tk.IntVar()
        self.forcelist = []

This is the calculate code.

    def mCalculate(self, *arg):
        print(arg)
        self.force_string.set( 'Force = Mass * Acceleration = {:4.2f}'.format( self.mass_double.get() * self.acceleration.get() ) )
        self.forcelist.append(self.counter.get() + 1)
        self.forcelist.append(self.mass_double.get()
        self.acceleration.get())

if you want the full code just let me know, or if you can spot the error from this, that'd be great.

[Brandon Hatch]

Nevermind, i figured it out. i used

self.counter.set(self.counter.get() + 1)

and it worked!