PyQt5 – 复选框的isTristate()方法
当我们在PyQt5应用程序中创建复选框时,默认情况下它只有两种状态,即True和False,但在setTristate方法的帮助下,isTristate方法被用来检查复选框是否有两种状态或三种状态,如果复选框有三种状态,则返回True,否则返回False。
语法: checkbox.isTristate()
参数: 它不需要参数。
返回: 它返回bool,如果是三态则为真,否则为假。
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 the check-box
checkbox = QCheckBox('Check Box', self)
# setting geometry of check box
checkbox.setGeometry(200, 150, 100, 30)
# creating the third state
checkbox.setTristate(True)
# getting if check bos is tri-state
check = checkbox.isTristate()
# printing the check
print(check)
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())
输出:
True