PyQt5 QListWidget – 添加额外的滚动条到它
在本文中,我们将看到如何为 QListWidget 添加额外的滚动条。 QListWidget 是一个方便的类,它提供了一个带有经典的基于项目的界面的列表视图,用于添加和删除项目。 QListWidget 使用内部模型来管理列表中的每个 QListWidgetItem。在对齐指定的位置添加小部件作为滚动条小部件。滚动条小部件显示在水平或垂直滚动条旁边,可以放置在它的任一侧。如果您希望滚动条小部件始终可见,请将相应滚动条的 scrollBarPolicy 设置为 AlwaysOn。
In order to do this we will use addScrollBarWidget
method with the list widget object.
Syntax : list_widget.addScrollBarWidget(scrollbar, alignment)
Argument : It takes QScrollBar and QAlignment object as argument
Return : It returns None
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 a QListWidget
list_widget = QListWidget(self)
# setting geometry to it
list_widget.setGeometry(50, 70, 150, 80)
# list widget items
item1 = QListWidgetItem("PyQt5 Geeks for Geeks")
item2 = QListWidgetItem("B")
item3 = QListWidgetItem("C")
item4 = QListWidgetItem("D")
# adding items to the list widget
list_widget.addItem(item1)
list_widget.addItem(item2)
list_widget.addItem(item3)
list_widget.addItem(item4)
# scroll bar
scroll_bar = QScrollBar(self)
# setting style sheet to the scroll bar
scroll_bar.setStyleSheet("background : lightgreen;")
# adding extra scroll bar to it
list_widget.addScrollBarWidget(scroll_bar, Qt.AlignLeft)
# creating a label
label = QLabel("GeesforGeeks", self)
# setting geometry to the label
label.setGeometry(230, 80, 280, 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 :