PyQt5 - 访问工具提示持续时间以查看（下拉）组合框

在本文中，我们将了解如何访问组合框下拉部分的工具提示持续时间。当我们将工具提示设置为组合框时，它仅显示行编辑部分。下拉部分（即其视图部分）看不到工具提示。

In order to access tool tip duration to the view part, do the following steps for implementation –

1. Create Combo box
2. Add items to the combo box
3. Get the view object of the combo box
4. Add tool tip to the view object
5. Get tool tip duration to the view object
6. Get the tool tip duration of the view object and store it in a variable
7. Create a label to show the duration

句法 ：

# getting view part of combo box
view = self.combo_box.view()

# setting tool tip to view object of the combo box
view.setToolTip(tip)

# setting tool tip duration to view object
view.setToolTipDuration(2000)

# accessing tool tip duration
duration = view.toolTipDuration()

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, 600, 400)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
    # method for widgets
    def UiComponents(self):
  
        # creating a combo box widget
        self.combo_box = QComboBox(self)
  
        # setting geometry of combo box
        self.combo_box.setGeometry(200, 150, 150, 30)
  
        # geek list
        geek_list = ["Sayian", "Super Sayian", "Super Sayian 2", "Super Sayian B"]
  
        # making it editable
        self.combo_box.setEditable(True)
  
        # adding list of items to combo box
        self.combo_box.addItems(geek_list)
  
        # tool tip
        tip = "Drop down tool tip"
  
        # getting view part of combo box
        view = self.combo_box.view()
  
        # setting tool tip to view object of the combo box
        view.setToolTip(tip)
  
        # setting tool tip duration to view object
        view.setToolTipDuration(2000)
  
        # getting the tool tip duration
        duration = view.toolTipDuration()
  
        # creating label to show the tool tip duration
        label = QLabel("Drop down tool tip duration : " + str(duration), self)
  
        # setting geometry of the label
        label.setGeometry(200, 100, 200, 30)
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：