PyQt5 - 为组合框设置工具提示持续时间

在本文中，我们将了解如何将工具提示持续时间设置为组合框。工具提示基本上是鼠标悬停在组合框小部件上时出现的提示。为了将工具提示设置为组合框，我们使用setToolTip方法。

注意：工具提示仅在鼠标悬停在组合框上而不在下拉视图上时可见

为了设置工具提示持续时间，我们使用setToolTipDuration方法。

Syntax : combo_box.setToolTipDuration(n)

Argument : It takes integer as argument i.e milliseconds

Return : 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, 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"]
  
        # making it editable
        self.combo_box.setEditable(True)
  
        # adding list of items to combo box
        self.combo_box.addItems(geek_list)
  
        # tool tip
        tip = "Sayian Tip"
  
        # setting tool tip to the combo box
        self.combo_box.setToolTip(tip)
  
        # setting duration to the tool tip
        self.combo_box.setToolTipDuration(2000)
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：

此工具提示会在 2 秒后消失