我有一个简单的应用程序,我正在使用PyQt 4编写,其中包含一个由QMdiArea组成的MainWindow。当用户启动新会话(新实验)时,会生成两个窗口。用户还可以从分析模块列表中进行选择以进行运行。
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“新实验”一次,则生成两个窗口。如果他/她再次选择“新实验”,则应关闭原来的两个窗口并打开两个新窗口。任何“分析模块”都是如此。 (即选择一个已经打开的将导致打开的一个关闭而一个新的打开)。
虽然我无法生成此功能。
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()
这在许多方面都不起作用:
我尝试使用remove()而不是close():
即:
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会崩溃,或者我收到以下两条错误消息之一:
(这个实际上只是一个警告):
QMdiArea::removeSubWindow: window is not inside workspace
或
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
关于如何以不同的方式删除子窗口而不产生这些问题,我感到很茫然。
由于