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📜  PyQt5 – 将背景颜色设置为从中间状态按下的指示器 |复选框

📅  最后修改于: 2022-05-13 01:55:21.086000             🧑  作者: Mango

PyQt5 – 将背景颜色设置为从中间状态按下的指示器 |复选框

在本文中,我们将看到当我们在中间状态按下它时,如何为按下的指示器设置背景颜色。当它被按下并返回到其他状态的默认状态时,它的颜色应该会发生变化。默认情况下,复选框只有两个状态,虽然我们也可以在setTristate方法的帮助下创建第三种状态,即未选中或未选中它在这两种状态之间称为中间状态。

为此,我们必须更改与复选框对象一起使用的中间指示器的样式表代码。下面是样式表代码。

QCheckBox::indicator:indeterminate:pressed
{
background-color : blue;
}

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 the check-box
        checkbox = QCheckBox('Geek ?', self)
  
        # setting geometry of check box
        checkbox.setGeometry(200, 150, 100, 30)
  
        # creating tri-state check box
        checkbox.setTristate(True)
  
        # adding background color to the pressed indicator
        # when it is in intermediate state
        checkbox.setStyleSheet("QCheckBox::indicator:indeterminate:pressed"
                               "{"
                               "background-color : blue;"
                               "}")
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 :