我有一个使用 PyQt 4 编写的简单应用程序,其中包括一个由 QMdiArea 组成的 MainWindow。当用户开始一个新会话(新实验)时,会生成两个窗口。用户还可以从分析模块列表中选择也运行。
我不希望允许任何窗口的任何重复(即,在下面的示例代码中,用户只能拥有一个 file_tree_window、一个 data_plot_window 和/或一个 cell_monitor_window)。
因此,例如,如果用户选择一次“新实验”,则会生成两个窗口。如果他/她再次选择“新实验”,则应该关闭原来的两个窗口并打开两个新窗口。任何“分析模块”也是如此。(即选择一个已经打开的将导致打开的关闭并打开一个新的)。
不过,我无法生成此功能。
首先,代码:
class MainWindow(QtGui.QMainWindow):
def __init__(self, model):
super().__init__()
self.resize(1400, 800)
self.model = model
menubar = self.menuBar()
new_experiment_action = QtGui.QAction("New Experiment", self)
new_experiment_action.triggered.connect(self.setup_new_experiment)
file_menu = menubar.addMenu("File")
file_menu.addAction(new_experiment_action)
cell_health_action = QtGui.QAction("Cell Health Monitor", self)
cell_health_action.triggered.connect(self.setup_cell_health_window)
analysis_menu = menubar.addMenu("Analysis Modules")
analysis_menu.addAction(cell_health_action)
self.file_tree = None
self.file_tree_window = None
self.data_plot = None
self.data_plot_window = None
self.cell_health = None
self.cell_health_window = None
self.mdi = QtGui.QMdiArea()
self.setCentralWidget(self.mdi)
def setup_new_experiment(self):
self.mdi.closeAllSubWindows()
self.file_tree = FileTree(self.model)
self.file_tree.setMinimumSize(QtCore.QSize(200, 300))
self.data_plot = DataPlot(self.model)
self.data_plot.setMinimumSize(self.size()*.4)
self.file_tree_window = self.mdi.addSubWindow(self.file_tree)
self.file_tree_window.show()
self.data_plot_window = self.mdi.addSubWindow(self.data_plot)
self.data_plot_window.show()
def setup_cell_health_window(self):
if self.cell_health_window:
self.mdi.removeSubWindow(self.cell_health_window)
self.cell_health = CellHealthMonitor(self.model)
self.cell_health.setMinimumSize(self.size()*.3)
self.cell_health_window = self.mdi.addSubWindow(self.cell_health)
self.cell_health_window.show()
这在很多方面都不起作用:
- 如果我打开“Cell Health Monitor”窗口,将其关闭,然后尝试重新打开,Python 会崩溃
- 如果我打开了“Cell Health Monitor”窗口,然后尝试启动“New Experiment”,然后打开“Cell Health Monitor”窗口,Python 崩溃
我尝试使用 remove() 而不是 close():
IE:
def setup_new_experiment(self):
for window in self.mdi.subWindowList():
self.mdi.removeSubWindow(window)
self.file_tree = FileTree(self.model)
self.file_tree.setMinimumSize(QtCore.QSize(200, 300))
self.data_plot = DataPlot(self.model)
self.data_plot.setMinimumSize(self.size()*.4)
self.file_tree_window = self.mdi.addSubWindow(self.file_tree)
self.file_tree_window.show()
self.data_plot_window = self.mdi.addSubWindow(self.data_plot)
self.data_plot_window.show()
def setup_cell_health_window(self):
if self.cell_health_window:
self.mdi.removeSubWindow(self.cell_health_window)
self.cell_health = CellHealthMonitor(self.model)
self.cell_health.setMinimumSize(self.size()*.3)
self.cell_health_window = self.mdi.addSubWindow(self.cell_health)
self.cell_health_window.show()
根据一系列操作,Python 要么崩溃,要么我收到以下两条错误消息之一:
(这实际上只是一个警告):
QMdiArea::removeSubWindow: window is not inside workspace
或者
Traceback (most recent call last):
File "MainWindow.py", line 61, in setup_cell_health_window
self.mdi.removeSubWindow(self.cell_health_window)
RuntimeError: wrapped C/C++ object of type QMdiSubWindow has been deleted
对于在不产生这些问题的情况下如何以不同的方式删除子窗口,我感到茫然。
谢谢