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Tkinter Articles
Page 15 of 46
How to update a Button widget in Tkinter?
We can update a Button widget in Tkinter in various ways, for example, we can change its size, change its background color, or remove its border, etc. In the following example, we will create three Button widgets and each of the buttons, upon clicking, will call a different function to update their features.Example# Import the required library from tkinter import * from tkinter import ttk # Create an instance of tkinter frame win = Tk() # Define geometry of the window win.geometry("700x300") # Function to Increase the Size of the Button def Button_Size(): button1.configure(font=('Calibri ...
Read MoreHow to show the status of CAPS Lock Key in tkinter?
We can use the and bindings to check if the CAPS Lock Key is ON or off. In the following example, we will create two user-defined functions "caps_lock_on()" and "caps_lock_off()" which will capture the event of Lock-KeyPress and Lock-KeyRelease and print the status on the screen.Example# Import required libraries from tkinter import * from tkinter import ttk # Create an instance of tkinter frame win = Tk() # Define the geometry of the window win.geometry("700x250") win.title("CAPS Lock Status") def caps_lock_on(e): label_caps.config(text="CAPS Lock is ON") def caps_lock_off(e): label_caps.config(text="CAPS ...
Read MoreHow to call a function using the OptionMenu widget in Tkinter?
Let's take an example and see how to call a function using OptionMenu widget in Tkinter. In the example, we will use a StringVar object and call its get() method. A StringVar object in Tkinter can help manage the value of a widget.We will create an OptionMenu widget and fill it with a list of strings. When the user selects an option, it will invoke a function which in turn will print the selected option as a label.Steps −Import the tkinter library and create an instance of tkinter frame.Set the size of the frame using geometry method.Create a set of ...
Read MoreHow to use a StringVar object in an Entry widget in Tkinter?
A StringVar object in Tkinter can help manage the value of a widget such as an Entry widget or a Label widget. You can assign a StringVar object to the textvariable of a widget. For example, data = ['Car', 'Bus', 'Truck', 'Bike', 'Airplane'] var = StringVar(win) my_spinbox = Spinbox(win, values=data, textvariable=var)Here, we created a list of strings followed by a StringVar object "var". Next, we assigned var to the textvariable of a Spinbox widget. To get the current value of the Spinbox, you can use var.get().ExampleThe following example demonstrates how you can use a StringVar object in an ...
Read MoreHow to set a default string value on a Tkinter Spinbox?
To set a default string value on a Tkinter Spinbox, we will have to use the set method. Let us take an example and see how to create a spinbox with a set of string values and then set a default string.Steps −Import the tkinter library and create an instance of tkinter frame.Set the size of the frame using geometry method.Create a set of strings and save it in a variable, data.Next, use the StringVar() constructor to create a StringVar object. It helps to manage the value of a widget, which is Spingbox in this case. If you don't pass ...
Read MoreHow to draw a line following mouse coordinates with tkinter?
To draw a line following mouse coordinates, we need to create a function to capture the coordinates of each mouse-click and then draw a line between two consecutive points. Let's take an example and see how it can be done.Steps −Import the tkinter library and create an instance of tkinter frame.Set the size of the frame using geometry method.Create a user-defined method "draw_line" to capture the x and y coordinates of each mouse click. Then, use the create_line() method of Canvas to draw a line between two consecutive points.Bind the left-click of the mouse with the draw_line method.Finally, run the ...
Read MoreHow to place the text at the center of an Entry box in Tkinter?
To put a border around a Frame in Tkinter, we have to use the highlightbackground and highlightthickeness parameters while creating the Frame. Let's take an example and see how to use these two parameters.Steps −Import the tkinter library and create an instance of tkinter frame.Set the size of the frame using geometry method.Create a frame with Frame() method. Highlight the border of the frame with a color, highlightbackground="blue". Then, set the thickness of the border, highlightthickness=2.Next, create some widgets inside the frame. In the example, we have placed four checkbuttons and a button inside the frame.Finally, run the mainloop of ...
Read MoreDisplay the Host Name and IP Address on a Tkinter Window
To obtain a user's IP address, we can use Python's native networking interface, socket. First of all, we need to query the device's host name and then get its associated IP address.In this example, we will use the socket library to get the host name and IP address and print the details on two labels.Steps −Import the tkinter library and create an instance of tkinter frame.Set the size of the frame using geometry method.Next, use the gethostname() method of socket library to get the host name and store it in a variable "hostname".Then use the gethostbyname() method and pass the ...
Read MoreHow to draw a dashed line on a Tkinter canvas?
To draw a dashed line on a Tkinter canvas, we can use the dash parameter of create_line() method.Steps −Import the tkinter library and create an instance of tkinter frame.Set the size of the frame using geometry method.Create a Canvas widget and set its height and width.Next, use the create_line function and pass the coordinates of the line (x1, y1) and (x2, y2).To get a dashed line, use the dash parameter dash=(5, 1) for 5px dash followed by 1px space.You can set the color and width of the dashed lines using the fill and width parameters.Finally, run the mainloop of the ...
Read MoreHow to align checkbutton in ttk to the left side?
To align the checkbuttons to left, you can use the anchor parameter and set it to "w" (west). Let's take an example and see how to do it.Steps −Import the tkinter library and create an instance of tkinter frame.Set the size of the frame using geometry method.Create a LabelFrame to collect the checkbuttons in a group.Next, create a checkbutton inside the LabelFrame and set its anchor to the West. anchor='w'.Similarly, create three more checkbuttons with their anchor set at West. It will align all the checkbuttons to the left.Finally, run the mainloop of the application window.Examplefrom tkinter import * ...
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