PyQt5 – 访问工具提示持续时间到组合框的视图（下拉）上

在这篇文章中，我们将看到如何在组合框的下拉部分访问工具提示持续时间。当我们给组合框设置工具提示时，它只显示在行编辑部分。工具提示在下拉部分，即视图部分是不可见的。

为了 **访问视图部分的工具提示期限，请执行以下步骤 – **

1.创建组合框

2.向组合框中添加项目

3.获取组合框的视图对象

4.在视图对象中添加工具提示

5.为视图对象获取工具提示持续时间

6.获取视图对象的工具提示持续时间并将其存储在一个变量中

7.创建一个标签来显示持续时间

语法:

# 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()

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, 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 :