PyQt5 – 获取可滚动标签的文本

在这篇文章中，我们将看到如何获取可滚动标签的文本，我们可以在创建一个继承了滚动区域类的新类的帮助下创建一个可滚动标签，但是问题出现了，新类只能设置文本，我们不能获取文本，因为它是可滚动标签类对象而不是普通的标签对象。

为了从可滚动的标签中获取文本，请执行以下操作 –

1.创建一个继承于QScrollArea的可滚动的标签类

2.添加布局，并在标签上添加标签。设置文本函数，将文本添加到标签中

3.创建一个文本函数，返回标签的内容。

可滚动标签类的语法。

class ScrollableLabel(QScrollArea):

    # constructor
    def __init__(self, *args, **kwargs):
        QScrollArea.__init__(self, *args, **kwargs)

        # making widget resizable
        self.setWidgetResizable(True)

        # making qwidget object
        content = QWidget(self)
        self.setWidget(content)

        # vertical box layout
        lay = QVBoxLayout(content)

        # creating label
        self.label = QLabel(content)

        # setting alignment to the text
        self.label.setAlignment(Qt.AlignLeft | Qt.AlignTop)

        # making label multi-line
        self.label.setWordWrap(True)

        # adding label to the layout
        lay.addWidget(self.label)

    # the setText method
    def setText(self, text):
        # setting text to the label
        self.label.setText(text)

    # getting text method
    def text(self):

        # getting text of the label
        get_text = self.label.text()

        # return the text
        return get_text

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 for scrollable label
class ScrollLabel(QScrollArea):
 
    # constructor
    def __init__(self, *args, **kwargs):
        QScrollArea.__init__(self, *args, **kwargs)
 
        # making widget resizable
        self.setWidgetResizable(True)
 
        # making qwidget object
        content = QWidget(self)
        self.setWidget(content)
 
        # vertical box layout
        lay = QVBoxLayout(content)
 
        # creating label
        self.label = QLabel(content)
 
        # setting alignment to the text
        self.label.setAlignment(Qt.AlignLeft | Qt.AlignTop)
 
        # making label multi-line
        self.label.setWordWrap(True)
 
        # adding label to the layout
        lay.addWidget(self.label)
 
    # the setText method
    def setText(self, text):
        # setting text to the label
        self.label.setText(text)
 
    # getting text method
    def text(self):
 
        # getting text of the label
        get_text = self.label.text()
 
        # return the text
        return get_text
 
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):
        # text to show in label
        text = "There are so many options provided by Python to develop GUI "
 
        # creating scroll label
        label = ScrollLabel(self)
 
        # setting text to the label
        label.setText(text)
 
        # setting geometry
        label.setGeometry(10, 100, 100, 80)
 
        get_text = label.text()
 
        # creating another label to show the text
        result = QLabel(get_text, self)
 
        # setting geometry to the label
        result.setGeometry(150, 100, 400, 40)
 
 
 
# create pyqt5 app
App = QApplication(sys.argv)
 
# create the instance of our Window
window = Window()
 
window.show()
 
# start the app
sys.exit(App.exec())

输出 :

PyQt5 - 获取可滚动标签的文本