PyQt5 QDockWidget – 码头位置改变信号

在本文中，我们将了解如何获取 QDockWidget 的停靠位置更改信号。 QDockWidget 提供了停靠小部件的概念，也称为工具面板或实用程序窗口。停靠窗口是放置在 QMainWindow（原始窗口）中中央小部件周围的停靠小部件区域中的辅助窗口。
当停靠小部件移动到另一个停靠区域或移动到其当前停靠区域中的不同位置时，会发出此信号。当停靠小部件以编程方式移动或被用户拖动到新位置时，就会发生这种情况。

In order to do this we will use dockLocationChanged method with the dock widget object.

Syntax : dock.dockLocationChanged.connect(method)

Argument : It takes method as argument

Return : It returns None

编程需要懂一点英语

下面是实现

Python3

# 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)
  
        dock.setAllowedAreas(Qt.NoDockWidgetArea)
  
        # 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 dock location changed signal
        # setting text to the label
        dock.dockLocationChanged.connect(lambda: label.setText("Dock Location Changed Signal Emitted"))
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出：