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Tkinter Articles
Page 20 of 46
How to draw a dot on a canvas on a click event in Tkinter Python?
Consider a case for creating a GUI application such that when we click on the window with a mouse button, it stores the coordinates and draws a dot. Tkinter provides events that allow the user to bind the keys or buttons with the functions.To draw a dot on click event, we can follow these general steps −Create a canvas widget and pack it to display in the window.Define a function draw_dot() that works as the event when the user does the click event.Create a global variable that counts the number of clicks in the canvas.If the count becomes two, then ...
Read MoreHow to change the width of a Frame dynamically in Tkinter?
The frame widget in Tkinter works like a container where we can place widgets and all the other GUI components. To change the frame width dynamically, we can use the configure() method and define the width property in it.ExampleIn this example, we have created a button that is packed inside the main window and whenever we click the button, it will update the width of the frame.# Import the required libraries from tkinter import * from tkinter import ttk # Create an instance of tkinter frame or window win=Tk() # Set the size of the window win.geometry("700x350") ...
Read MoreHow to draw a scale that ranges from red to green in Tkinter?
A color gradient defines the range of position-dependent colors. To be more specific, if you want to create a rectangular scale in an application that contains some color ranges in it (gradient), then we can follow these steps −Create a rectangle with a canvas widget and define its width and height.Define a function to fill the color in the range. To fill the color, we can use hex values inside a tuple.Iterate over the range of the color and fill the rectangle with it.Example# Import the required libraries from tkinter import * from tkinter import ttk # Create an ...
Read MoreHow to get the input from the Tkinter Text Widget?
In tkinter, we can create text widgets using Text attributes using packages. However, while creating a GUI application, sometimes we need to capture the input from a text widget.We can get the input from the user in a text widget using the .get() method. We need to specify the input range which will be initially from 1.0 to END that shows the characters starting and ending till the END.Example#Import tkinter library from tkinter import * #Create an instance of tkinter window or frame win=Tk() win.geometry("700x300") def get_input(): value=my_text_box.get("1.0", "end-1c") print(value) #Creating a text box widget ...
Read MoreHow to hide and show canvas items on Tkinter?
The Canvas widget is one of the versatile widgets in Tkinter. It is used in many applications for designing the graphical user interface such as designing, adding images, creating graphics, etc. We can add widgets in the Canvas widget itself. The widgets that lie inside the canvas are sometimes called "Canvas Items".If we want to show or hide the canvas items through a Button, then this can be achieved by using the "state" property in itemconfig(id, state) method.ExampleIn this example, we will add an image in the canvas and a button will be used to show/hide the image in the ...
Read MoreHow do I get the index of an item in Tkinter.Listbox?
We use the Tkinter Listbox widget to create a list of items. Each item in the listbox has some indexes that are assigned to them sequentially in vertical order.Let us suppose that we want to get the index of a clicked item in the listbox. Then, we have to first create a button that will capture the current selection of the items using list.curselection() method and then, we will print the index using the get() method.Example# Import the required libraries from tkinter import * # Create an instance of tkinter frame or window win = Tk() # Set the size ...
Read MoreHow do I center the text in a Tkinter Text widget?
Tkinter text widget is a multiline text input widget. It is used to insert, delete, and add textual data in the input field. It provides many built-in functions and attributes in its widget class.To configure and align the text at the CENTER of a Tkinter Text widget, we can use justify=CENTER property.Example# Import the required libraries from tkinter import * # Create an instance of tkinter frame or window win=Tk() # Set the size of the window win.geometry("700x350") text=Text(win) # Configure the alignment of the text text.tag_configure("tag_name", justify='center') # Insert a Demo Text text.insert("1.0", "How do ...
Read MoreDifference between title() and wm_title() methods in Tkinter class
Tkinter has a definite class hierarchy which contains many functions and built-in methods. As we create applications, we use these functions to build the structure of components.The wm class stands for "window manager" that is a mixin class that provides many builtin functions and methods.The method wm_title() is used to change the title of the tkinter window. However, alternatively, we can also use the win.title() method. Generally, wm class provides many methods that let us communicate with the window services.Example# Import the required libraries from tkinter import * # Create an instance of tkinter frame or window win = Tk() ...
Read MoreHow to make a system tray application in Tkinter?
A System Tray application is created for the continuous execution of the program. Whenever an application is closed by the user, it will get its state running on the taskbar. To identify a system tray application, we can provide an image or icon to its application.To create a System Tray icon of a tkinter application, we can use pystray module in Python. It has many inbuilt functions and methods that can be used to configure the system tray icon of the application.To install pystray in your machine, you can type "pip install pystray" command in your shell or command prompt.To ...
Read MoreUndo and redo features in a Tkinter Text widget
Tkinter Text widget is another input widget similar to the Entry widget which accepts multiline user input in a text field. It contains many inbuilt features and functions which helps to configure the default properties of the text widget. However, to add undo/Redo features in the Tkinter text widget, we can use Boolean attributes undo which ensures that the text can be retrieved again.Example# Import the required libraries from tkinter import * from tkinter import ttk # Create an instance of tkinter frame or window win=Tk() # Set the size of the window win.geometry("700x350") # Create a ...
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