PyQt5 - 按下时将皮肤设置为不确定的复选框

在本文中，我们将看到如何将皮肤设置为处于中间（不确定）状态并被按下的复选框的指示器，该皮肤仅在复选框被按下且其状态不确定时出现。 Indeterminate 是复选框的第三种状态，它处于选中状态和未选中状态之间，可以借助setTristate方法创建。

为了在复选框处于不确定状态并被按下时向指示器添加 kin，我们必须更改样式表代码。下面是样式表代码。

QCheckBox::indicator:indeterminate:pressed
{
border-image : url(image.png);
}

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
        checkbox1 = QCheckBox('Geek ?', self)
  
        # setting tristate check box
        checkbox1.setTristate(True)
        # setting geometry of check box
        checkbox1.setGeometry(200, 150, 100, 40)
  
        # changing style sheet code of check box
        # adding skin to indeterminate indicator when it get pressed
        checkbox1.setStyleSheet("QCheckBox::indicator:indeterminate:pressed"
                                "{"
                                "border-image : url(image.png);"
                                "}")
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：