PyQt5 QSpinBox – 清除掩码

在本文中，我们将看到如何从旋转框中清除遮罩，遮罩用于隐藏 UI 图像元素的一部分。我们可以使用setMask方法设置掩码。

为了做到这一点，我们使用 cleanText 方法。

Syntax : spin_box.clearMask()

Argument : It takes no argument

Action Performed : It mask on the spin box

实施步骤：
1.创建一个主窗口
2.创建一个旋转框设置它的范围前缀和后缀
3. 为旋转框添加遮罩
4.创建一个按钮
5. 为按钮添加动作
6.在action方法里面调用clearMask方法

下面是实现

# importing libraries
from PyQt5.QtWidgets import * 
from PyQt5 import QtCore, QtGui
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 spin box
        self.spin = QSpinBox(self)
  
        # setting geometry to spin box
        self.spin.setGeometry(100, 100, 250, 40)
  
        # setting range to the spin box
        self.spin.setRange(0, 999999)
  
        # setting prefix to spin
        self.spin.setPrefix("Prefix ")
  
        # setting suffix to spin
        self.spin.setSuffix(" Suffix")
  
        # creating a push button
        push = QPushButton("Clear", self)
  
        # setting geometry to the push button
        push.setGeometry(100, 200, 100, 40)
  
        # adding action to the push button
        push.clicked.connect(self.push_action)
  
        # setting mask on spin box
        region = self.spin.childrenRegion()
        self.spin.setMask(region)
  
    # method called by the push button
    def push_action(self):
  
        # clearing the mask
        self.spin.clearMask()
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
window.spin.setFocus()
# start the app
sys.exit(App.exec())

输出：