Today we are starting a series of posts. We will learn how to make desktop applications using python. In this post, we are learning the basic layout for desktop applications. Ultimately, we will learn how to make a working desktop application with python. Let us jump into the code.
We are using PyQt5 for this
pip install pyqt5
import sys from PyQt5.QtWidgets import QApplication, QWidget, QLabel def main(): app = QApplication(sys.argv) window = QWidget() window.setGeometry(0, 0, 200, 200) text_widget = QLabel(window) text_widget.setText("Hello Parseltongues ....") text_widget.move(20,90) window.setWindowTitle("First App") window.show() app.exec() sys.exit() if __name__ == '__main__': main()
We can check this part by part
Create an app instance
app = QApplication(sys.argv)
For every app we need one and only one QApplication instance.
Create a parent widget and set its geometry
window = QWidget() window.setGeometry(0, 0, 200, 200)
Every app has at least one Qwidget. Widgets are used to interact with users.
Parameters for set geometry are
x-coordinate from users' screens top
Y-coordinate from users' screens top left
Width of window
Height of window
Here 200*200 window created a the top left of window
Create text widget
text_widget = QLabel(window)
Creating a label widget, as a child of previous widget
Setting text widget and placing in window
text_widget.setText("Hello Parseltongues ....") text_widget.move(20,90)
setText method is used to set the text to Qlabel. The move function is used to place 20px from the left and 90 from the top of the parent window
Set the title for the window
Show parent widget
By default parent widget will not display we have to explicitly call the show function.
Start the event loop
This will start the event loop program wait here until the app is closed
Exit the program
Hope you have learned basics of pyqt from this post. In the next post, we will learn how to handle events, and take inputs from users,s, etc. Please share your valuable suggestion with firstname.lastname@example.org