![]() ![]() If you click the button "Check", it will print whether the label widget exists or not. In the application, we can check if the label widget is present or not. Running the above code will display a window with a button and a label widget. # We will define a button to check if a widget exists or notīutton = ttk.Button(win, text="Check", command=check_widget)īace(relx=.5, rely=.5, anchor=CENTER) Label = Label(win, text="Hey There! Howdy?", font=('Helvetica 18 bold')) The winfoname() method of the widget returns the name of the widget. # Define a function to check if a widget exists or not It returns a Boolean value where True(1) specifies that the widget exists in the application, and False(0) specifies that the widget doesn't exist in the application. The method can be invoked with the particular widget we want to check. If we want to check if a widget exists or not, then we can use the winfo_exists() method. import tkinter as tkįont = "Helvetica 16 bold italic").To make a particular Tkinter application fully functional and operational, we can use as many widgets as we want. ![]() Python3 from tkinter import from tkinter.ttk import root Tk () height root.winfoscreenheight () width root.winfoscreenwidth () print(' width x height d x d (in pixels) ' (width, height)) mainloop () Output: Code 2: Getting height and width in mm. The attribute fg can be used to have the text in another colour and the attribute bg can be used to change the background colour of the label. Code 1: Getting height and width in pixels. You have to consider that fonts are one of several areas that are not platform-independent. typically via a "font" configuration option. This can be achieved by setting the attribute "font". The second, ttk, is a submodule of tkinter. When imported, it loads the Tk library on your system. Some Tk widgets, like the label, text, and canvas widget, allow you to specify the fonts used to display text. The first, tkinter, is the standard binding to Tk. ![]() If the compound option is set to BOTTOM, LEFT, RIGHT, or TOP, the image is drawn correspondingly to the bottom, left, right or top of the text. We can have the image on the right side and the text left justified with a padding of 10 pixel on the left and right side by changing the Label command like this: If you set the compound option to CENTER the text will be drawn on top of the image: import tkinter as tk To get the text as well, you have to use the compound option. By default, if an image is given, it is drawn instead of the text. You want the text drawn on top of the image? No problem! We need just one label and use the image and the text option at the same time. Tkinter Server Side Programming Programming. The previous example without justify (default is centre) and padx looks like this: padx can be used to add additional horizontal padding around a text label. The "justify" parameter can be used to justify a text on the LEFT, RIGHT or CENTER. If you start this script, it will look like this using Ubuntu Linux with Gnome desktop: W1 = tk.Label(root, image=logo).pack(side="right")Įxplanation = """At present, only GIF and PPM/PGM Logo = tk.PhotoImage(file="python_logo_small.gif") The following example contains two labels, one with a text and the other one with an image. Our script will remain in the event loop until we close the window.Īs we have already mentioned, labels can contain text and images. The window won't appear until we enter the Tkinter event loop: root.mainloop() The pack method tells Tk to fit the size of the window to the given text. The keyword parameter "text" specifies the text to be shown: w = tk.Label(root, text="Hello Tkinter!") So our Label widget is a child of the root widget. myTip Hovertip (myBtn,'This is a multiline tooltip.', hoverdelay1000). The first parameter of the Label call is the name of the parent window, in our case "root". The next line of code contains the Label widget. The root widget has to be created before any other widgets and there can only be one root widget. To initialize tkinter, we have to create a Tk root widget, which is a window with a title bar and other decoration provided by the window manager. In our example, we imported tkinter by renaming it into tk, which is the preferred way to do it: import tkinter as tk The tkinter module, containing the Tk toolkit, has always to be imported. Under Windows it appears in the Windows look and feel: If you run the command under the Gnome and Linux, the window the window will look like this: If we save the script under the name hello.py, we can start it like this using the command shell: $ python3 hello.py Enjoying this page? We offer live Python training courses covering the content of this site. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |