PyQt5 可滚动标签 - 获取标签部分的工具提示持续时间

在本文中，我们将看到如何获取滚动标签的标签部分的工具提示持续时间，当知道我们可以通过继承滚动类并在其中制作标签来制作可滚动标签时，但是当我们将工具提示设置为该类时对象工具提示设置为整个小部件，即标签和滚动条。

为了获得工具提示及其标签部分的持续时间，我们必须重写对象的函数。

Steps for implementation –

1. Create a new class which inherits QScrollArea
2. Inside the class create vertical layout
3. Create a label and make it multi-line and add it to the layout
5. Over-ride the setText and text method for label
6. Over-ride setToolTip and setToolTipDuration method
7. Over-ride toolTipDuration method which return duration of label tool tip
8. Create object of this class inside the main window class and setting text to it
9. Add tooltip and its duration to the object with the help of setToolTip and setToolTipDuration method
10. Get the tooltip with the help of toolTipDuration method
11. Create another label to show the duration

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 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)
  
        # 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
  
    # setToolTip method
    def setToolTip(self, p_str):
        # setting tool tip to the label
        self.label.setToolTip(p_str)
  
    # setToolTipDuration method
    def setToolTipDuration(self, p_int):
        # setting tool tip duration to the label
        self.label.setToolTipDuration(p_int)
  
    # getting tool tip duration
    # toolTipDuration method
    def toolTipDuration(self):
        # returning the duration of label
        return self.label.toolTipDuration()
  
  
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 " \
               " There are so many options provided by Python to develop GUI" \
               " 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(100, 100, 150, 80)
  
        # setting tool tip
        label.setToolTip("It is tool tip")
  
        # setting tool tip duration
        label.setToolTipDuration(1000)
  
        # getting duration
        duration = label.toolTipDuration()
  
        # creating another label to show the duration
        result = QLabel("Duration : " + str(duration), self)
  
        # setting geometry to the label
        result.setGeometry(150, 200, 200, 30)
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())