JLabel 上的 Jython 鼠标侦听器导致 TypeError
我正在 Jython 中创建一个应用程序，尝试捕获 JLabel 上的鼠标事件。我有一个包含 JLabel 的 JFrame，但是当我尝试向其中添加鼠标侦听器时，我得到：
TypeError: write only attribute
主窗口：
class Commander(JFrame):
...
self.image = ImageIcon()
self.label = JLabel(self.image)
self.mouseListener = ScreenMouseListener()
self.label.addMouseListener(self.mouseListener) <- This line causes the TypeError
...
鼠标侦听器扩展了 MouseAdapter：
class ScreenMouseListener(MouseAdapter):
def mousePressed(self, event):
print "Mouse pressed"
搜索错误导致我 PyBeanEvent，但我不明白为什么会发生。哪个属性是只写的？
编辑：删除导致错误的行后，我注意到 mousePressed 函数被调用！ “mouseListener”可能是 JFrame 的属性吗？
I'm making an application in Jython where I try to capture mouse events on a JLabel. I have a JFrame that contains a JLabel, but when I try to add a mouse listener to it I get:
TypeError: write only attribute
The main window:
class Commander(JFrame):
...
self.image = ImageIcon()
self.label = JLabel(self.image)
self.mouseListener = ScreenMouseListener()
self.label.addMouseListener(self.mouseListener) <- This line causes the TypeError
...
The mouse listener extends MouseAdapter:
class ScreenMouseListener(MouseAdapter):
def mousePressed(self, event):
print "Mouse pressed"
Searching for the error leads me to PyBeanEvent, but I don't understand why it happens. Which attribute is write-only?
Edit: After removing the line that caused the error, I noticed that the mousePressed function gets called! Is "mouseListener" perhaps a property of JFrame?
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我相信JFrame.mouseListener是一个只写属性，即没有实现get函数，所以当它传递给self.label.addMouseListener时，它无法被读取。
通过执行以下操作解决了该问题：
I believe JFrame.mouseListener is a write-only property, i.e. there is no get function implemented, so when it was passed to self.label.addMouseListener, it could not be read.
Solved it by doing the following instead: