PyQt5 QSpinBox – 检查箭头按钮是否被移除
在这篇文章中,我们将看到如何检查旋转盒中的箭头按钮是否被移除,基本上在旋转盒中有两个按钮,一个用于增加数值,第二个用于减少数值。为了移除这些按钮,我们使用setButtonSymbols方法。为了检查,我们将使用buttonSymbols方法。
语法: spin_box.buttonSymbols()
参数: 它不需要参数
返回: 它返回QAbstractSpinBox对象,但如果按钮被移除,它的相应值是2。
下面是实现方法
# 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, 150, 40)
# removing the buttons
self.spin.setButtonSymbols(QAbstractSpinBox.NoButtons)
# creating label
label = QLabel(self)
# setting geometry to the label
label.setGeometry(100, 160, 200, 30)
# getting the button symbol
symbol = self.spin.buttonSymbols()
# checking if arrow button is removed
if symbol == 2:
text ="No Arrow buttons"
else:
text =" Arrow buttons"
# setting text to the label
label.setText(text)
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())
输出。