PyQt5 QDockWidget – 窗口标题更改信号
在这篇文章中,我们将看到如何获得QDockWidget的窗口标题改变信号。QDockWidget提供了dock widgets的概念,也被称为工具调色板或实用窗口。Dock窗口是放置在QMainWindow(原始窗口)中中央部件周围的dock部件区域的二级窗口。
Window title属性持有dock部件的标题(caption),它可以在setWindowTitle方法的帮助下设置。当dick widget窗口的标题改变时,这个信号会被发射出来。
为了做到这一点,我们将使用dock小组件对象的windowTitleChanged方法。
语法: dock.windowTitleChanged.connect(method)
参数: 它需要方法作为参数
返回: 它返回无
以下是实现方法
# 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, 500, 400)
# calling method
self.UiComponents()
# showing all the widgets
self.show()
# method for components
def UiComponents(self):
# creating dock widget
dock = QDockWidget(self)
# setting title to the dock widget
dock.setWindowTitle("GfG Dock")
# push button
push = QPushButton("Press", self)
# setting floating property
dock.setFloating(False)
# setting widget to the dock
dock.setWidget(push)
# creating a label
label = QLabel("GeeksforGeeks", self)
# setting geometry to the label
label.setGeometry(100, 200, 300, 80)
# making label multi line
label.setWordWrap(True)
# setting geometry tot he dock widget
dock.setGeometry(100, 0, 200, 30)
# getting window title changed signal
# setting text to the label
dock.windowTitleChanged.connect(lambda: label.setText("Title Changed Signal Emitted"))
# changing title of dock widget
dock.setWindowTitle("GeeksforGeeks")
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())
输出 :