from Tkinter import * imports every exposed object in Tkinter into your current namespace. import Tkinter imports the “namespace” Tkinter in your namespace and import Tkinter as tk does the same, but “renames” it locally to ‘tk’ to save you typing let’s say we have a module foo, containing the classes A, B, and C. … Read more
def quit(self): self.root.destroy() Add parentheses after destroy to call the method. When you use command=self.root.destroy you pass the method to Tkinter.Button without the parentheses because you want Tkinter.Button to store the method for future calling, not to call it immediately when the button is created. But when you define the quit method, you need to … Read more
The only reference to the image object is a local variable. When __init__ exits, the local variable is garbage collected so the image is destroyed. In the second example, because the image is created at the global level it never goes out of scope and is therefore never garbage collected. To work around this, save … Read more
A Tkinter Button has three states : active, normal, disabled. You set the state option to disabled to gray out the button and make it unresponsive. It has the value active when the mouse is over it and the default is normal. Using this you can check for the state of the button and take … Read more
I know this is an old question but I found it weird that no one came up with the simple solution I had, app = SampleApp() app.attributes(‘-topmost’, True) app.update() app.attributes(‘-topmost’, False) app.mainloop()
The root of the problem is that you are unknowingly using the Frame class from the ttk package rather than from the tkinter package. The one from ttk does not support the background option. This is the main reason why you shouldn’t do wildcard imports — you can overwrite the definition of classes and commands. … Read more
I rewrote your code in a more organized, better-practiced way: import tkinter as tk class Demo1: def __init__(self, master): self.master = master self.frame = tk.Frame(self.master) self.button1 = tk.Button(self.frame, text=”New Window”, width = 25, command = self.new_window) self.button1.pack() self.frame.pack() def new_window(self): self.newWindow = tk.Toplevel(self.master) self.app = Demo2(self.newWindow) class Demo2: def __init__(self, master): self.master = master self.frame … Read more
Section 6.8 Why doesn’t the canvas seem to start at 0,0? of the Tk Usage FAQ describes the phenomenon. I was able to eliminate the border artefact with slight changes to the posted source… Change this: w = Canvas(master, width=150, height=40, bd=0, relief=”ridge”) w.pack() to: w = Canvas(master, width=150, height=40, bd=0, highlightthickness=0, relief=”ridge”) w.pack() and … Read more
After poking around a bit through the Introduction to Tkinter, I came up with the code below, which doesn’t do anything except display a text field and clear it when the “Clear text” button is pushed: import tkinter as tk class App(tk.Frame): def __init__(self, master): tk.Frame.__init__(self, master, height=42, width=42) self.entry = tk.Entry(self) self.entry.focus() self.entry.pack() self.clear_button … Read more
The padding options padx and pady of the grid and pack methods can take a 2-tuple that represent the left/right and top/bottom padding. Here’s an example: import tkinter as tk class MyApp(): def __init__(self): self.root = tk.Tk() l1 = tk.Label(self.root, text=”Hello”) l2 = tk.Label(self.root, text=”World”) l1.grid(row=0, column=0, padx=(100, 10)) l2.grid(row=1, column=0, padx=(10, 100)) app = … Read more