PyQt5 QDoubleSpinBox – 设置样式表

在本文中，我们将看到如何将样式表设置为 QDoubleSpinBox。样式表用于设置双旋转框的颜色、背景和各种样式。使用样式表，我们可以为其添加边框并制作我们自己的自定义双旋转框。

In order to do this we will use setStyleSheet method with the double spin box object.

Syntax : dd_spin.setStyleSheet(code)

Argument : It takes string as as argument

Return : It returns None

下面是示例样式表代码

QDoubleSpinBox
{
border : 2px solid black;
background : white;
}
QDoubleSpinBox::hover
{
border : 2px solid green;
background : lightgreen;
}
QDoubleSpinBox::up-arrow
{
border : 1px solid black;
background : blue;
}
QDoubleSpinBox::down-arrow
{
border : 1px solid black;
background : red;
}

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, 500, 400)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
    # method for components
    def UiComponents(self):
  
        # creating double spin box
        d_spin = QDoubleSpinBox(self)
  
        # setting geometry to the double spin box
        d_spin.setGeometry(100, 100, 150, 40)
  
        # setting decimal precision
        d_spin.setDecimals(1)
  
        # step type
        step_type = QAbstractSpinBox.AdaptiveDecimalStepType
  
        # adaptive step type
        d_spin.setStepType(step_type)
  
        # setting style sheet to the double spin box
        d_spin.setStyleSheet("QDoubleSpinBox"
                             "{"
                             "border : 2px solid black;"
                             "background : white;"
                             "}"
                             "QDoubleSpinBox::hover"
                             "{"
                             "border : 2px solid green;"
                             "background : lightgreen;"
                             "}"
                             "QDoubleSpinBox::up-arrow"
                             "{"
                             "border : 1px solid black;"
                             "background : blue;"
                             "}"
                             "QDoubleSpinBox::down-arrow"
                             "{"
                             "border : 1px solid black;"
                             "background : red;"
                             "}"
                             )
  
  
        # creating a label
        label = QLabel("GeeksforGeeks", self)
  
        # setting geometry to the label
        label.setGeometry(100, 200, 300, 80)
  
        # making label multi line
        label.setWordWrap(True)
  
  
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：