PyQt5 - 创建圆形按钮

在本文中，我们将看到如何创建圆形按钮。默认情况下，当我们创建一个按钮时，它是矩形的，尽管我们也可以将它的大小更改为正方形。

In order to create circular button we have to do following steps:

1. Create a push button.
2. Change its size to make it square.
3. Set radius of button to half of length or square button.

注意：如果我们将半径设置为大于长度的一半，则不会发生任何变化，因为该形状是不可能的。

Syntax : button.setStyleSheet(“border-radius : 50;”)

Argument : It takes string as argument.

Action performed : It sets the radius of button.

代码 ：

# importing libraries
from PyQt5.QtWidgets import * 
from PyQt5.QtGui import * 
from PyQt5.QtCore import * 
import sys
  
  
class Window(QMainWindow):
    def __init__(self):
        super().__init__()
  
        # setting title
        self.setWindowTitle("Python ")
  
        # setting geometry
        self.setGeometry(100, 100, 600, 400)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
    # method for widgets
    def UiComponents(self):
  
        # creating a push button
        button = QPushButton("CLICK", self)
  
        # setting geometry of button
        button.setGeometry(200, 150, 100, 100)
  
        # setting radius and border
        button.setStyleSheet("border-radius : 50; 
                              border : 2px solid black")
  
        # adding action to a button
        button.clicked.connect(self.clickme)
  
    # action method
    def clickme(self):
  
  
        # printing pressed
        print("pressed")
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：