获取添加到QMainWindow的Dock-widget的引用

Question

我使用使用Qt编写的软件，并且它具有QMainWindow对象。添加到QMainWindow对象已经存在时，我需要获取小部件的引用。我看过Qt文档。我希望有一个事件childAdded或其他什么，但我找不到任何东西。

请查看此代码：

import sys
from PyQt5.QtWidgets import QApplication, QPushButton, QMainWindow, QDockWidget
from PyQt5.QtCore import Qt

class MainWindow(QMainWindow):    
    def __init__(self, *args, **kwargs):
        super(MainWindow, self).__init__(*args, **kwargs)    
        self.button = QPushButton("A Button!")
        self.setCentralWidget(self.button)

def do_something(w):
    w.setWindowTitle("Newly Added")

def add_dock_widget(win):
    win.addDockWidget(Qt.RightDockWidgetArea, QDockWidget())

app = QApplication(sys.argv)
window = MainWindow()
window.show()

add_dock_widget(window)
# At this point, somehow, I need to get the reference of added widget.
# Because add_dock_widget method doesn't return any reference.

# I'm looking for something like that, so that I can manipulate the widget:
# window.childAdded[****].connect(do_something)

app.exec_()

该软件允许在其中编写python脚本。将子级添加到GUI后，我需要使用脚本更改子级内的某些内容。

Answer 1

您可以简单地从add_dock_widget返回停靠小部件，如下所示：

def add_dock_widget(win):
    dock = QDockWidget(win)
    win.addDockWidget(Qt.RightDockWidgetArea, dock)
    return dock

app = QApplication(sys.argv)
window = MainWindow()
window.show()

dock = add_dock_widget(window)

do_something(dock)