PyQt5组合框 不可编辑和鼠标悬停时的不同边框尺寸

在这篇文章中，我们将看到如何在组合框不可编辑和鼠标悬停时为其设置不同的边框宽度，当我们为组合框设置边框时，虽然我们可以分别改变每个边框的颜色，但所有边框都是相同的。不同的边框宽度只会在组合框不可编辑和光标在组合框上时出现。

注意： 在setEditable方法的帮助下，组合框可以变得可编辑。

为了做到这一点，我们必须改变与组合框相关的样式表，下面是样式表代码 –

代码1

QComboBox::!editable:hover
{
border : solid black;
border-width-top : 1px;
border-width-right : 5px;
border-width-bottom : 2px;
border-width-left : 10px;
}

代码2

QComboBox::!editable:hover
{
border : solid black;
border-width : 1px 5px 2px 10px;
}

这两个代码都执行类似的任务，只是代码1是代码2的扩展版本。

下面是执行情况

# 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 a check-able combo box object
        self.combo_box = QComboBox(self)

        # setting geometry of combo box
        self.combo_box.setGeometry(200, 150, 150, 80)

        # making combo box editable
        # self.combo_box.setEditable(True)

        # geek list
        geek_list = ["Sayian", "Super Sayian", 
                     "Super Sayian 2", "Super Sayian B"]

        # adding list of items to combo box
        self.combo_box.addItems(geek_list)

        # setting style sheet
        # adding border to combo box
        # adding different width border when it is
        # non-editable and mouse hover over it
        self.combo_box.setStyleSheet("QComboBox"
                                     "{"
                                     "border : 5px solid black;"
                                     "}"
                                     "QComboBox::! editable:hover"
                                     "{"
                                     "border : solid black;"
                                     "border-width : 1px 5px 2px 10px;;"
                                     "}")


# create pyqt5 app
App = QApplication(sys.argv)

# create the instance of our Window
window = Window()

window.show()

# start the app
sys.exit(App.exec())