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Tkinter LabelFrame is similar to Frames in Tkinter Library. It works like a container where widgets can be placed. LabelFrame initially creates a container with some rectangular border around it. In order to style the LabelFrame widget, we have several style options such as background, borderwidth, labelanchor, highlightcolor and many more.ExampleIn this example, we will see the LabelFrame widget and its properties.#Import required libraries from tkinter import * #Create an instance of tkinter frame win= Tk() #Define the geometry of the window win.geometry("750x250") #Initialize a LabelFrame Widget labelframe= LabelFrame(win, text= "Frame 01", width= 600, height= 200, labelanchor= "n", font= ('Helvetica ... Read More
Tkinter is one of the Python-based libraries used to create and develop Desktop User interfaces and applications. Using the Tkinter library and its packages, we will create a Rock Paper Scissor Game Application. The game can be played between two people using hand gestures. The condition for winning the game is, If player A gets Paper and Player B gets scissors, then Scissor wins.If player A gets Paper and Player B gets Rock, then Paper wins.Similarly, If player A gets Rock and Player B gets scissors, then Rock wins.Following these game conditions, we will first create the GUI for the game user interface. The ... Read More
Oftentimes, we need to deal with plots in our Tkinter GUI-based application. To support the plots for the available data points, Python provides a Matplotlib package that can be imported into the application easily. In order to add a plot for the given data points, we have to install several other packages such as NumPy along with Matplotlib. NumPy is a Python library that helps to deal with scientific calculation in the Data.ExampleIn this example, we will create data points for the car prices starting from (100000) with the units in the range of 1000 to 5000.#Import the required Libraries ... Read More
Tkinter withdraw method hides the window without destroying it internally. It is similar to the iconify method that turns a window into a small icon. Let us suppose we want to reveal the hidden window during the execution of an application then we can use deiconify() method. It can be invoked with the window or frame of a widget in the application.ExampleIn this example, we will define a button in a Toplevel window (Popup Window) which can be the trigger to reveal the main window.#Import the library from tkinter import * from tkinter import ttk #Create an instance of Tkinter frame win= ... Read More
To process images with Tkinter and other Python packages, we generally refer to use Pillow Package or PIL in Python. It provides a way to load and process the images in the program wherever we need. Initially, we convert the image to an instance of PhotoImage object that allows images to be further used in many use cases. Further, the Canvas widget in Tkinter helps to draw the images in a Tkinter application, we can use the create_image(x, y, image_file) method to display the image in a particular application.Example#Import the required Libraries from tkinter import * from PIL import Image, ... Read More
The state property in Tkinter is used to change the state of any specific widget. We can make a widget either active or disabled whenever required. To disable the Checkbuttons widget, we have to set the state property as readonly or disabled. Changing the state will make all the checkbuttons inactive during the execution of the program.Example#Import the required Libraries from tkinter import * from tkinter import ttk #Create an instance of Tkinter frame win = Tk() #Set the geometry of Tkinter Frame win.geometry("750x250") #Add a Top widget Label(win, text= "Select an Option from the Menu", font=('Aerial', 15, 'bold')).pack(pady=15) ... Read More
To separate a particular portion from the image, we have to locate the area first. Then we have to copy that area from the main image to another matrix. This is how the ROI in OpenCV works.In this example, two matrices have been declared at the beginning. After that, an image named 'image_name.jpg' has been loaded into the 'image1' matrix. The next line 'image2=image1 (Rect(100, 100, 120, 120));' requires special attention. This line is cropping out the defined region of the image and storing it in the 'image2' matrix.The figure shows what we have done here with the 'Rect(100, 100, ... Read More
We have declared three variables named-'blue_Channel', 'green_channel' and 'red_channel'. The goals of these variables is to save the pixel values. We have used these variables inside the 'for loops'. Then we declared a matrix named 'color_Image_Matrix'.The syntax of this method is:blue_Channel = color_image_Matrix.at(i, j)[0];We used a BGR image. It has three channels. These channels maintain specific sequence, color_image_Matrix.at (i, j) represents the pixel values located at (i, i) and [0] represents the first channel. For example, if we write the line as follows:blue_Channel=color_image_Matrix.at (30, 35) [0];It means the variable 'blue_Channel' will have the first channel's pixel value located at(30, 35). ... Read More
Tkinter Button widgets are very useful in terms of handling events and performing actions during the execution of an application. We can create Tkinter Buttons using the Button(parent, text, option..) constructor. Using the constructor, we can create multiple buttons within the loop.ExampleIn this example, we will create multiple buttons in the range using a Python for loop.#import required libraries from tkinter import * from tkinter import ttk #Create an instance of Tkinter frame win= Tk() #Set the geometry of the window win.geometry("750x250") #Create a LabelFrame labelframe= LabelFrame(win) #Define a canvas in the window canvas= Canvas(labelframe) canvas.pack(side=RIGHT, fill=BOTH, ... Read More
Tkinter functions can be created with the help of threading concept where we define, when a function should run or stop. A Tkinter function can be scheduled using the after(time, callback) function.Let us suppose that we have created a callback function that forces the main window to be closed after some time. There might be times when we need to stop the scheduling of the function. In order to cancel or stop a particular schedule of a callback function, we can use after_cancel(widget) function.ExampleIn the given example, the script will close the main window after 3 seconds but after initializing ... Read More