PyQt5 QSpinBox – 清除文本
在这篇文章中,我们将看到如何清除文本,即旋转框的值,清除并不意味着重设值,即恢复原来的值,清除值/文本意味着完全清除旋转框的内容。
为了达到这个目的,我们将使用clear()方法。
语法: spin_box.clear()
参数: 它不需要参数
返回: 它返回无。
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)
# creating a push button
button = QPushButton("Click", self)
# setting geometry to the button
button.setGeometry(200, 200, 100, 40)
# adding action ot the push button
button.pressed.connect(self.do_something)
# action called by the button
def do_something(self):
# clearing the spin box
self.spin.clear()
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())