PyQt5 QScrollBar – 设置样式表
在这篇文章中,我们将看到如何为QScrollBar设置样式表。QScrollBar是一个控件,它使用户能够访问文档中比用来显示它的小部件更大的部分。滑块是滚动条内可滚动的对象。样式表是用来使外观更好的属性,即通过创建自定义设计。
为了做到这一点,我们将对滚动条对象使用setStyleSheet方法。
语法: scroll.setStyleSheet(sheet)
参数: 它接受字符串作为参数
返回: 它返回无。
下面是样式表的示例代码
QScrollBar
{
background : lightgreen;
}
QScrollBar::handle
{
background : pink;
}
QScrollBar::handle::pressed
{
background : red;
}
以下是实施情况
# 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, 500, 400)
# calling method
self.UiComponents()
# showing all the widgets
self.show()
# method for components
def UiComponents(self):
scroll = QScrollBar(self)
# setting geometry of the scroll bar
scroll.setGeometry(100, 50, 30, 200)
# setting style sheet
scroll.setStyleSheet("QScrollBar"
"{"
"background : lightgreen;"
"}"
"QScrollBar::handle"
"{"
"background : pink;"
"}"
"QScrollBar::handle::pressed"
"{"
"background : red;"
"}"
)
# creating a label
label = QLabel("GeeksforGeeks", self)
# setting geometry to the label
label.setGeometry(200, 100, 300, 80)
# making label multi line
label.setWordWrap(True)
# getting value changed signal
scroll.valueChanged.connect(lambda: do_action())
# method called when signal is emitted
def do_action():
# setting text to the label
label.setText("Current Value : " + str(scroll.value()))
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())