I have a program where i need to display in an entry box the \r\n characters. However in this entry box in tkinter they don't show up. When I send and return over serial, the \r\n shows up on what is returned so the characters are there, they're just not being displayed.
Is there any way to get these characters to show up in the entry box without having to manually enter them each time.
Here is the code
from tkinter import *
title_str = "Entry Boxes Test"
root = Tk()
root.title(title_str)
f1_value = StringVar()
f1_value.set("=> HELP\r\n")
f2_value = StringVar()
f2_value.set("=> VERSION\r\n")
def callback_f1():
listbox.insert(END, f1_entry.get())
listbox.see(END)
return
def callback_f2():
listbox.insert(END, f2_entry.get())
listbox.see(END)
return
title_frame = Frame(root)
title_frame.pack(side=TOP)
body_frame = Frame(root)
body_frame.pack(side=TOP)
left = Frame(body_frame)
right = Frame(body_frame)
left.pack(side=LEFT)
right.pack(side=LEFT)
bottom_frame = Frame(root)
bottom_frame.pack(side=TOP)
#attach scroll bar to bottom frame for messages
scrollbar = Scrollbar(bottom_frame)
scrollbar.pack(side=RIGHT, fill=Y)
listbox = Listbox(bottom_frame, width=40)
listbox.pack()
# attach listbox to scrollbar
listbox.config(yscrollcommand=scrollbar.set)
scrollbar.config(command=listbox.yview)
title_var = StringVar()
title = Label(title_frame, textvariable=title_var, relief=FLAT, height=2)
title_var.set(title_str)
title.pack(side=TOP)
#F1 and F2
f1_button = Button(left, text="F1", width=15, height=2, command=callback_f1, state=NORMAL)
f1_button.pack(side=TOP)
f1_entry = Entry(left, textvariable=f1_value, width=18)
f1_entry.pack(side=TOP)
f2_button = Button(right, text="F2", width=15, height=2, command=callback_f2, state=NORMAL)
f2_button.pack(side=TOP)
f2_entry = Entry(right, textvariable=f2_value, width=18)
f2_entry.pack(side=TOP)
root.mainloop()
I've tried separating it like
f1_value.set("=> Help" + "\r\n")
and
f1_value.set("=> FUP{ret}".format(ret="\r\n"))
but nothings worked so far.
Thanks in advance!
Sending this over serial,
ser = serial.Serial()
def write_ser(st):
ser.write(st.encode())
time.sleep(1)
while ser.inWaiting():
try:
s = ser.read(20)
except:
listbox.insert(END, "read failed")
listbox.see(END)
return
listbox.insert(END, "<" + str(s)[2:-1] + ">")
listbox.see(END)
return
with, e.g. for f1,
def callback_f1():
listbox.insert(END, f1_entry.get())
listbox.see(END)
write_ser(f1_entry.get())
return
If you mean to display \ literally, escape them:
f1_value = StringVar()
f1_value.set("=> HELP\\r\\n")
f2_value = StringVar()
f2_value.set("=> VERSION\\r\\n")
or use r'raw string literals':
f1_value = StringVar()
f1_value.set(r"=> HELP\r\n")
f2_value = StringVar()
f2_value.set(r"=> VERSION\r\n")
Related
I am building a chat GUI. On enter-key press, I want the text fields to be shown on the text box as well as be saved in a file. I do not want to use separate button. It is being shown in the text box correctly but not getting saved in the file. Please tell me how can it be done. This is my first time using tkinter.
from Tkinter import *
root = Tk()
frame = Frame(root, width=300, height=1000)
frame.pack(side=BOTTOM)
#username entry
L1 = Label(frame, text="User Name")
L1.pack(side = LEFT)
input_username = StringVar()
input_field1 = Entry(frame, text=input_username, width=10)
input_field1.pack(side=LEFT, fill=X)
#addresee entry
L2 = Label(frame, text="#")
L2.pack(side = LEFT)
input_addresee = StringVar()
input_field2 = Entry(frame, text=input_addresee, width=10)
input_field2.pack(side=LEFT, fill=X)
#user comment entry
L3 = Label(frame, text="Comment")
L3.pack(side = LEFT)
input_usertext = StringVar()
input_field3 = Entry(frame, text=input_usertext, width=100)
input_field3.pack(side=LEFT, fill=X)
#write to a file
def save():
text = input_field1.get() + input_field2.get() + input_field3.get()
with open("test.txt", "w") as f:
f.write(text)
#chat box
chats = Text(root)
chats.pack()
def Enter_pressed(event):
input_get_name = input_field1.get()
print(input_get_name)
chats.insert(INSERT, '%s : ' % input_get_name)
input_username.set('')
input_get_add = input_field2.get()
print(input_get_add)
chats.insert(INSERT, '#%s : ' % input_get_add)
input_addresee.set('')
input_get_comment = input_field3.get()
print(input_get_comment)
chats.insert(INSERT, '%s\n' % input_get_comment)
input_usertext.set('')
save()
frame2 = Frame(root)
L2_1 = Label(frame2, text="All chats")
L2_1.pack(side = TOP)
input_field1.bind(Enter_pressed)
input_field2.bind(Enter_pressed)
input_field3.bind("<Return>", Enter_pressed)
frame2.pack()
root.mainloop()
As you said you are setting the input fields to blank
Here's the solution:
def save(text):
with open("test.txt", "w") as f:
f.write(text)
And when calling save:
save(input_get_name+": "+input_get_add+": "+input_get_comment)
I have a frame with a checkbox and a X button in it. When I hit the X button, I want to delete that frame. Is there a way to denote parent frames? I can't refer to it by its variable name because I made it using a function so all the relevant frames share the same name.
My code:
import tkinter
master = tkinter.Tk()
master.title("test1")
master.geometry("300x300")
checkboxArea = tkinter.Frame(master)
checkboxArea.pack(fill=tkinter.X)
inputStuff = tkinter.Frame(master)
def removeInputStuff():
inputStuff.pack_forget()
buttonAdd.pack()
buttonDone.remove()
buttonDone = tkinter.Button(inputStuff, text = "Close Input", command=removeInputStuff)
def createInputStuff():
paddingFrame = tkinter.Frame(inputStuff, height=5)
paddingFrame.pack(fill=tkinter.X)
buttonDone.pack()
inputStuff.pack()
buttonAdd.pack_forget()
buttonAdd = tkinter.Button(master, text="Add Item", command=createInputStuff)
buttonAdd.pack()
topInput = tkinter.Frame(inputStuff)
bottomInput = tkinter.Frame(inputStuff)
topInput.pack()
bottomInput.pack()
def drawCheckboxAndDeleteInputBoxAndPrompt():
nextToCheckbox = entry.get()
entry.delete(0,tkinter.END)
checkboxRow = tkinter.Frame(checkboxArea)
checkboxRow.pack(fill=tkinter.X)
checkbox1 = tkinter.Checkbutton(checkboxRow, text = nextToCheckbox)
checkbox1.pack(side=tkinter.LEFT)
deleteItem = tkinter.Button(checkboxRow, text = "x", bg="red", fg="white", activebackground="white", activeforeground="red")
deleteItem.pack(side=tkinter.RIGHT)
prompt = tkinter.Label(topInput, text="What do you want your checkbox to be for?")
prompt.pack()
entry = tkinter.Entry(bottomInput, bd=3)
entry.pack(side=tkinter.LEFT)
buttonConfirm = tkinter.Button(bottomInput, text="Confirm", command=drawCheckboxAndDeleteInputBoxAndPrompt)
buttonConfirm.pack(side=tkinter.LEFT)
master.mainloop()
I would assign a function to delete checkboxRow, but I think that would delete all of my rows.
I just added command=checkboxRow.destroy when the deleteItem button is created and it works (it only delete the intended item, not all of them).
So drawCheckboxAndDeleteInputBoxAndPrompt becomes
def drawCheckboxAndDeleteInputBoxAndPrompt():
nextToCheckbox = entry.get()
entry.delete(0,tkinter.END)
checkboxRow = tkinter.Frame(checkboxArea)
checkboxRow.pack(fill=tkinter.X)
checkbox1 = tkinter.Checkbutton(checkboxRow, text = nextToCheckbox)
checkbox1.pack(side=tkinter.LEFT)
deleteItem = tkinter.Button(checkboxRow, text = "x", bg="red", fg="white",
activebackground="white", activeforeground="red",
command=checkboxRow.destroy)
deleteItem.pack(side=tkinter.RIGHT)
I am trying to make a GUI where as soon as the user inputs an integer into a ttk.entry field, that many checkbuttons need to appear below it. For example, if they put "5" into the entry widget, 5 check buttons need to appear below the entry field.
Edit:
What I ended up using:
self.number_of_stages = tk.IntVar()
self.check_box_dict={}
self.num_of_stages={}
self.stagetempvar={}
self.equipment_widgets={}
def centrifugal_compressor_widgets(self):
self.equipment_widgets.clear()
self.equipment_widgets["NumOfStagesLabelCentComp"]=tk.Label(self.parent, text="Number of Stages:", bg="white")
self.equipment_widgets["NumOfStagesLabelCentComp"].place(relx=0.5, y=260, anchor="center")
self.equipment_widgets["NumOfStagesEntryCentComp"]=ttk.Entry(self.parent, textvariable=self.number_of_stages)
self.equipment_widgets["NumOfStagesEntryCentComp"].place(relx=0.5, y=290, anchor="center")
def OnTraceCentComp(self, varname, elementname, mode):
for key in self.check_box_dict:
self.check_box_dict[key].destroy()
try:
if self.number_of_stages.get() <=15 :
i=1
self.stagetempvar.clear()
while i <= self.number_of_stages.get():
self.stagetempvar[i]=tk.StringVar()
self.stagetempvar[i].set("Closed")
self.check_box_dict[i]=ttk.Checkbutton(self.parent, text=i, offvalue="Closed", onvalue="Open",variable=self.stagetempvar[i])
self.check_box_dict[i].place(relx=(i*(1/(self.number_of_stages.get()+1))), y=360, anchor="center")
i+=1
except:
pass
take a look at the below and let me know what you think...
A very ugly, super basic example:
from Tkinter import *
root = Tk()
root.geometry('200x200')
root.grid_rowconfigure(0, weight = 1)
root.grid_columnconfigure(0, weight = 1)
win1 = Frame(root, bg= 'blue')
win1.grid(row=0, column=0, sticky='news')
number = IntVar()
entry = Entry(win1, textvariable = number)
entry.pack()
confirm = Button(win1, text = 'Press to create widgets...', command = lambda:create_widgets(number.get()))
confirm.pack()
def create_widgets(number):
for n in range(0,number):
Checkbutton(win1, text = 'Checkbutton number : %s' % n).pack()
root.mainloop()
I'm building a python GUI and there I got 2 text boxes.
I want to create a submit button that will take the data from those 2 text boxes and send them to start(save_place, website_url) function.
This is what I got so far:
from Tkinter import *
def start(save_place, website_url):
#something
app = Tk()
top_app = Frame(app)
top_app.pack()
save_location = Entry(top_app, width=20)
url = Entry(top_app, width=20)
save_location.grid(sticky=W, row=0)
url.grid(sticky=W, row=1)
save_place = save_location.get("1.0", END)
website_url = url.get("1.0", END)
button_start = Button(top_app, text="Start", fg="green", command=start(save_place,website_url))
button_start.grid(sticky=W, row=2, pady=20)
app.mainloop()
I also tried this:
from Tkinter import *
def start():
save_place = save_loc.get()
website_url = urls.get()
print (save_place + " " + website_url)
app = Tk()
top_app = Frame(app)
top_app.pack()
save_loc = StringVar()
save_location = Entry(top_app, textvariable=save_loc, width=85)
urls = StringVar()
url = Entry(top_app, textvariable=urls, width=85)
button_start = Button(top_app, text="Start", fg="green", command=start)
button_start.grid(sticky=W, row=2, pady=20)
app.mainloop()
And it didn't work.
How can I make this script send the inputs in the text boxes to the function?
Thanks to all the helpers :)
As mentioned in the previous response "about how to call a function", you just put command = start and put save_place = save_location.get()
in start function, however you can use save_location = Entry(top_app, width=20), so the total prg:
from Tkinter import *
def start():
#something
save_place = save_location.get()
website_url = url.get()
print save_place,website_url
app = Tk()
top_app = Frame(app)
top_app.pack()
save_location = Entry(top_app, width=20)
url = Entry(top_app, width=20)
save_location.grid(sticky=W, row=0)
url.grid(sticky=W, row=1)
button_start = Button(top_app, text="Start", fg="green", command=start)
button_start.grid(sticky=W, row=2, pady=20)
app.mainloop()
command=start(save_place,website_url) doesn't do what you think its doing. It's assigning the result of the function call to the command. (Which is probably None). Bind your Entry boxes to StringVar like:
location = StringVar()
Entry(top_app, textvariable=location, width=20)
Then you assign the function call to the command parameter using command = start. Inside the function you can access the value in the Entry using location.get(). To set the value use the corresponding method location.set(value)
I am getting the error mentioned in the title of the post I really just want this to work. Been working on this problem for a while now and it is frustrating. My ultimate goal is to obtain the values for the varables text, chkvar, and v.
Thanks to anyone who can reply and help on this!!
#!C:/Python27/python.exe
from Tkinter import *
import ImageTk, Image
root = Tk()
root.title('HADOUKEN!')
def killwindow():
root.destroy()
text = Text(root, height=16, width=40)
scroll = Scrollbar(root, command=text.yview)
text.configure(yscrollcommand=scroll.set)
text.grid(sticky=E)
scroll.grid(row=0,column=1,sticky='ns')
text.focus()
chkvar = IntVar()
chkvar.set(0)
c = Checkbutton(root, text="CaseIt", variable=chkvar)
c.grid(row=1,column=0,sticky=W)
v = ""
radio1 = Radiobutton(root, text="Src", variable=v, value=1)
radio1.grid(row=1,column=0)
radio1.focus()
radio2 = Radiobutton(root, text="Dst", variable=v, value=2)
radio2.grid(row=2,column=0)
b1 = Button(root, text="Submit", command=killwindow)
b1.grid(row=1, column=2)
img = ImageTk.PhotoImage(Image.open("Hadoken.gif"))
panel = Label(root, image = img)
panel.grid(row=0, column=2)
root.mainloop()
tk1 = text.get(text)
tk2 = chkvar.get(chkvar)
tk3 = v.get(v)
print tk1
print tk2
print tk3
Once mainloop exits, the widgets no longer exist. When you do text.get(text), you're trying to access a deleted widget. Tkinter simply isn't designed to allow you to access widgets after the main window has been destroyed.
The quick solution is to modify killwindow to get the values before it destroys the window, and store them in a global variable which you can access after mainloop exits.
The program didn't make it through the variable getting, so it never reported the incorrect method calls. I made a few changes to the original code (added a textval StringVar, and changed the v variable to another IntVar). I had a feeling the "associated variables" wouldn't have a problem, and didn't need to be included in the killwindow code. The only variable I grab in killwindow is the text data.
Working code (changed lines marked with #++) :
#!C:/Python27/python.exe
from Tkinter import *
import ImageTk, Image
root = Tk()
root.title('HADOUKEN!')
textval = StringVar() #++ added
def killwindow():
textval.set(text.get('1.0',END)) #++ grab contents before destruction
root.destroy()
text = Text(root, height=16, width=40)
scroll = Scrollbar(root, command=text.yview)
text.configure(yscrollcommand=scroll.set)
text.grid(sticky=E)
scroll.grid(row=0,column=1,sticky='ns')
text.focus()
chkvar = IntVar()
chkvar.set(0)
c = Checkbutton(root, text="CaseIt", variable=chkvar)
c.grid(row=1,column=0,sticky=W)
v = IntVar() #++ changed
v.set(1) #++ initial value
radio1 = Radiobutton(root, text="Src", variable=v, value=1)
radio1.grid(row=1,column=0)
radio1.focus()
radio2 = Radiobutton(root, text="Dst", variable=v, value=2)
radio2.grid(row=2,column=0)
b1 = Button(root, text="Submit", command=killwindow)
b1.grid(row=1, column=2)
img = ImageTk.PhotoImage(Image.open("Hadoken.gif"))
panel = Label(root, image = img)
panel.grid(row=0, column=2)
root.mainloop()
# windows are destroyed at this point
tk1 = textval.get() #++ changed
tk2 = chkvar.get() #++ changed
tk3 = v.get() #++ changed
print tk1
print tk2
print tk3