PyQt5 QSpinBox - 使旋转框可见

在本文中，我们将了解如何借助setVisible方法使旋转框可见。我们可以使用hide方法或setHidden方法隐藏旋转框。默认情况下，旋转框是可见的。

为此，我们使用setVisible方法。

Syntax : spin_box.setVisible(bool)

Argument : It takes bool as argument

Return : It returns None

实施步骤：
1.创建一个旋转框
2.创建一个按钮
3.为按钮添加动作
4. 在按钮内部使用 setHidden 方法隐藏旋转框
5.创建另一个按钮
6. 在动作内部使用 setVisible 方法使旋转框可见

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 prefix to spin
        self.spin.setPrefix("Prefix ")
  
        # setting suffix to spin
        self.spin.setSuffix(" Suffix")
  
  
        # creating push button
        button = QPushButton("Hidden", self)
  
        # setting button geometry
        button.setGeometry(100, 160, 100, 40)
  
        # adding action to the push button
        button.clicked.connect(self.push_method)
  
        # creating push button
        e_button = QPushButton("Visible", self)
  
        # setting button geometry
        e_button.setGeometry(220, 160, 100, 40)
  
        # adding action to the push button
        e_button.clicked.connect(self.another_method)
  
    # method called by push button
    def push_method(self):
  
        # making spin box hidden
        self.spin.setHidden(True)
  
    # method called by e_button
    def another_method(self):
  
        # making spin box visible
        self.spin.setVisible(True)
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：