Python / Tkinter getting text from Enter box

Question

Apologies for the basic nature of the question. Tkinter has me totally stumped.

I'm trying to construct an application with a menu bar, one of the choices would pull up a dialog where the user enters two values and then either presses an "Enter" or "Cancel" button. Either button press should then close the window.

I can construct the main window and the 'pop-up' to enter the values, I've gone through all examples of extracting text and closing the window after the button press but I'm still coming up empty. Here is the framework I'd like to use:

 from Tkinter import *

 #
 #  Functions to perform functions selected from main window
 #

 def enter_values():
    new_window = Toplevel(root) 
    Label(new_window, text="Value 1").grid(sticky=W,row=0)
    e1=Entry(new_window,width=40).grid(row=0,column=1,sticky=W)
    Label(new_window, text="Value 2").grid(pady=20,sticky=W,row=1)
    e2=Entry(new_window,width=20).grid(row=1,column=1,pady=20,sticky=W)
    ok= Button(new_window, text="Enter",command=lambda: callback("OK")).grid(column=0,row=4,pady=30)
    cancel = Button(new_window,text="Cancel",command=lambda: callback("CANCEL")).grid(column=1,row=4,pady=30)

 def callback(button):
       if button == "OK":
            print "OK"
       elif button == "CANCEL":
            print "Cancel"
       else:
            print "no idea"

 #
 #  Following section defines the display window
 #

 root = Tk()
 root.minsize(500,200)
 root.geometry("800x300")
 root.wm_title("Some clever title here")
 menubar = Menu(root)
 filemenu = Menu(menubar, tearoff=0)
 filemenu.add_command(label="New", command=enter_values)
 filemenu.add_separator()
 filemenu.add_command(label="Exit", command=root.quit)
 menubar.add_cascade(label="File", menu=filemenu)

 root.config(menu=menubar)
 root.mainloop()

user2987606 · Accepted Answer · 2013-11-13 20:06:58Z

You'll have to close the window by new_window.destroy(). To get the text from entries, define variables, assign them to Entries and get values when needed. Not the best example but something like this would work:

from tkinter import *

#
#  Functions to perform functions selected from main window 
#

def enter_values():
    v1 = StringVar()
    v2 = StringVar()
    new_window = Toplevel(root) 
    Label(new_window, text="Value 1").grid(sticky=W,row=0)
    Entry(new_window,textvariable=v1,width=40).grid(row=0,column=1,sticky=W)
    Label(new_window, text="Value 2").grid(pady=20,sticky=W,row=1)
    Entry(new_window,textvariable=v2,width=20).grid(row=1,column=1,pady=20,sticky=W)
    ok= Button(new_window, text="Enter",command=lambda: callback("OK",new_window,v1,v2)).grid (column=0,row=4,pady=30)
    cancel = Button(new_window,text="Cancel",command=lambda: callback("CANCEL",new_window)).grid(column=1,row=4,pady=30)


def callback(button,new_window,v1=None,v2=None):
    if button == "OK":
        print("OK")
        print(v1.get())
        print(v2.get())
    elif button == "CANCEL":
        print("Cancel")
    else:
        print("no idea")
    new_window.destroy()


#
#  Following section defines the display window
#

root = Tk()
root.minsize(500,200)
root.geometry("800x300")
root.wm_title("Some clever title here")
menubar = Menu(root)
filemenu = Menu(menubar, tearoff=0)
filemenu.add_command(label="New", command=enter_values)
filemenu.add_separator()
filemenu.add_command(label="Exit", command=root.quit)
menubar.add_cascade(label="File", menu=filemenu)
root.config(menu=menubar)
root.mainloop()

Thanks much, that does kill the window. How do I pick up the contents of the text box(s) ?

Collectives™ on Stack Overflow

Python / Tkinter getting text from Enter box

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related