I'm trying to create a label with a vertical scrollbar, using code similar to this:
from Tkinter import *
master = Tk()
master.geometry('480x320')
scrbar = Scrollbar(master, orient=VERTICAL, width=28)
scrbar.place(x=450, y=52)
lbl = Label(master, text=('A'*100), yscrollcommand=scrbar.set)
lbl.place(x=10, y=10)
scrbar.config(command=lbl.yview)
master.mainloop()
When running this, I get the following error:
Traceback (most recent call last):
File "test.py", line 6, in <module>
lbl = Label(master, text=('A'*100), yscrollcommand=scrbar.set)
File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 2590, in __init__
Widget.__init__(self, master, 'label', cnf, kw)
File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 2089, in __init__
(widgetName, self._w) + extra + self._options(cnf))
_tkinter.TclError: unknown option "-yscrollcommand"
Does anyone know a solution?
The solution is to use a widget that supports a scrollbar. The Label isn't such a widget. If you only need to scroll horizontally you can use an Entry widget and just set the state to disabled after setting the text.
If you need to scroll vertically, you can use a Text widget. You can also use a canvas with either a text item drawn on the canvas, or a label embedded in the canvas (search for how to do a scrollable frame; the solution is the same even though it's a label rather than a frame)
Related
r_login = Tk()
r_login.title("Admin Login - Student Management System")
r_login.geometry("1280x720")
bg2 = PhotoImage(file="002.png")
lbl_bg2 = Label(r_login, image=bg2)
lbl_bg2.pack()
icon = PhotoImage(file='logo.png')
r_login.iconphoto(True, icon)
root = Tk()
root.title("Student Management System")
root.geometry("1280x720")
bg1 = PhotoImage(file="003.png")
lbl_bg1 = Label(root, image=bg1)
lbl_bg1.pack()
icon = PhotoImage(file='logo.png')
root.iconphoto(True, icon)
title = Label(root, text="Student Management System",
font=("Arial", 48, "bold"),
fg="black", bg="white")
title.place(x=226, y=30)
Output:
Traceback (most recent call last):
File "D:\Students Management\main.py", line 137, in <module>
lbl_bg1 = Label(root, image=bg1)
^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\amicr\AppData\Local\Programs\Python\Python311\Lib\tkinter\__init__.py", line 3214, in __init__
Widget.__init__(self, master, 'label', cnf, kw)
File "C:\Users\amicr\AppData\Local\Programs\Python\Python311\Lib\tkinter\__init__.py", line 2628, in __init__
self.tk.call(
_tkinter.TclError: image "pyimage3" doesn't exist
I'm not being able to display the image in next. The first one is for admin for login and where the second is for another
Both of this image in my working directory and logo also. But some how I'm getting this error
You have more than one instance of Tk. All of the images are being created in the first instance and cannot be used in the second or subsequent instances.
You should not be creating two instances of Tk. Instead, if you need multiple windows. The second and subsequent windows should be instances of Toplevel.
For more info for why multiple instances of Tk is discouraged, read this
I'm doing with tutorial on youtube in this Python Course at 6:23:00 for him is working I don't know what to do.
Code:
from tkinter import *
#label = an area widget that holds text and/or an image within a window
window = Tk()
photo = PhotoImage(file='C:\\Users\\Kuba\\Desktop\\folder\\images\\3x')
label = Label(window, text='something', font=('Arial',30,'bold'), fg='#00FF00',
bg='black', bd=10, relied=RAISED, padx=20,pady=20, image=photo)
label.pack()
#label.place(x = 0,y= 0)
window.mainloop()
Result:
Traceback (most recent call last):
File "c:\\Users\\Kuba\\Desktop\\folder\\programowanie\\nauka programowania python\\nauka po angielsku\\nauka66.py", line 8, in \<module\>
photo = PhotoImage(file='C:\\Users\\Kuba\\Desktop\\folder\\images\\3x')
File "C:\\Users\\Kuba\\AppData\\Local\\Programs\\Python\\Python310\\lib\\tkinter\__init_\_.py", line 4093, in __init__
Image.__init__(self, 'photo', name, cnf, master, \*\*kw)
File "C:\\Users\\Kuba\\AppData\\Local\\Programs\\Python\\Python310\\lib\\tkinter\__init_\_.py", line 4038, in __init__
self.tk.call(('image', 'create', imgtype, name,) + options)
\_tkinter.TclError: couldn't open "C:\\Users\\Kuba\\Desktop\\folder\\images\\3x": no such file or directory
As the error implies "C:\Users\Kuba\Desktop\folder\images\3x": no such file or directory, you either do not have the image or made a typo in the directory. you can change it manually using file explorer to make sure your photo exists in the directory you entered.
When I typed the following code as per the Think Python text book, I'm getting the error message below.
The window does actually get displayed, but it doesn't contain the desired content.
from swampy.World import World
world=World()
world.mainloop()
canvas = world.ca(width=500, height=500, background='white')
bbox = [[-150,-100], [150, 100]]
canvas.rectangle(bbox, outline='black', width=2, fill='green4')
The error message was like this:
Traceback (most recent call last):
File "15.4.py", line 4, in <module>
canvas = world.ca(width=500, height=500, background='white')
File "/usr/local/lib/python2.7/dist-packages/swampy/Gui.py", line 244, in ca
return self.widget(GuiCanvas, width=width, height=height, **options)
File "/usr/local/lib/python2.7/dist-packages/swampy/Gui.py", line 359, in widget
widget = constructor(self.frame, **widopt)
File "/usr/local/lib/python2.7/dist-packages/swampy/Gui.py", line 612, in __init__
Tkinter.Canvas.__init__(self, w, **options)
File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 2234, in __init__
Widget.__init__(self, master, 'canvas', cnf, kw)
File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 2094, in __init__
(widgetName, self._w) + extra + self._options(cnf))
_tkinter.TclError: can't invoke "canvas" command: application has been destroyed
The main application loop needs to be pretty much the last thing you run in your application. So move world.mainloop() to the end of your code like this:
from swampy.World import World
world = World()
canvas = world.ca(width=500, height=500, background='white')
bbox = [[-150, -100], [150, 100]]
canvas.rectangle(bbox, outline='black', width=2, fill='green4')
world.mainloop()
What happens in your code is that when the line with world.mainloop() is hit, it builds the user interface elements and goes in to the main loop, which continuously provides your application with user input.
During it's lifetime, that main loop is where your application will spend 99% of its time.
But once you quit your application, the main loop terminates and tears down all those user interface elements and the world. Then the remaining lines after the main loop will be executed. In those, you're trying to build and attach a canvas to a world that has already been destroyed, hence the error message.
I am trying to make a tkinter code that can generate a window with an image on it. This is the area that keeps giving me an error:
window=tk.Tk()
window.geometry('1100x900')
window.title('Hello World')
lab1= tk.Label(window, text='Input the desired delay time')
btn=tk.Button(window, text='Go to new window', bg='Blue', command=NewTab)
btn2=tk.Button(window, text='Leave', bg='Red', command=close)
imgset=ImageTk.PhotoImage(Image.open(imgpath))
img = tk.Label(window, image=imgset)
img.pack()
lab1.pack()
btn.pack()
btn2.pack()
window.mainloop()
where imagepath is a path to a picture in the my pictures folder
and this is the error I keep getting
Traceback (most recent call last):
File "C:\PythonScripts\trunk\Personal\PythonWindow_ForTiming.py", line 49, in <module>
img = tk.Label(window, image=imgset)
File "C:\Python34\lib\tkinter\__init__.py", line 2604, in __init__
Widget.__init__(self, master, 'label', cnf, kw)
File "C:\Python34\lib\tkinter\__init__.py", line 2122, in __init__
(widgetName, self._w) + extra + self._options(cnf))
_tkinter.TclError: image "pyimage1" doesn't exist
What am I doing incorrectly? Could you please include comments to help me understand, I am just learning about tkinter
Thanks in advance
You need to add 2 lines as following (I commented the lines in question)
imgset=Image.open(imgpath)
# Convert imgset to a Tkinter-compatible image object
photo = ImageTk.PhotoImage(imgset)
img = tk.Label(window, image=photo)
# Keep a reference to the image
img.image = photo
img.pack()
Elementary note: you may rename img to something that reflects the Label() instance better (to avoid an eventual confusion) such as label
You may be interested in reading The Tkinter PhotoImage Class
I am currently trying to implement code into my program to update a buttons color when the user hovers the mouse cursor over it. The program recognizes the hover, but returns an error.
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Python34\lib\tkinter\__init__.py", line 1482, in __call__
return self.func(*args)
File "C:\Users\oiest\Documents\Programs\iNTMI\v1.1.3b\iNTMI.py", line 252, in <lambda>
achievementsButton.bind("<Enter>", lambda event: achievementsButton.configure(bg = "red"))
File "C:\Python34\lib\tkinter\__init__.py", line 1270, in configure
return self._configure('configure', cnf, kw)
File "C:\Python34\lib\tkinter\__init__.py", line 1261, in _configure
self.tk.call(_flatten((self._w, cmd)) + self._options(cnf))
_tkinter.TclError: unknown option "-bg"
I had Googled how to do the changing of colors when hovering and found the following code. Though for some reason, it does not work for me. What am I doing wrong?
achievementsButton.bind("<Enter>", lambda event: achievementsButton.configure(bg = "red"))
achievementsButton.bind("<Leave>", lambda event: achievementsButton.configure(bg = "white"))
This is the code from where I originally defined achievementsButton.
achievementsButton = ttk.Button(self, text = "Achievements", command = lambda: controller.show_frame(achievements), width = "25")
ttk.Button instances do not have a bg or background attribute. There are two solutions:
Use an ordinary tkinter.Button, which does have a bg attribute.
Keep using the ttk.Button, and configure it using a style object. See Using and customizing ttk styles for more information. Example:
from Tkinter import *
import ttk
root = Tk()
s = ttk.Style()
s.configure("regular.TButton", background="red")
s.configure("onhover.TButton", background="white")
button = ttk.Button(root, style="regular.TButton")
button.pack()
button.bind("<Enter>", lambda event: button.configure(style="onhover.TButton"))
button.bind("<Leave>", lambda event: button.configure(style="regular.TButton"))
root.mainloop()
However, this will only change the background color of the area behind the actual button, rather than the button's face. This
post seems to indicate that it's impossible to change the face color of a ttk Button.