Question

我正在使用某些面板上的TextCtrlAutoComplete小部件修改wxpython应用程序。我销毁包含TextCtrlAutoComplete小部件的面板后有一个错误。似乎在令人厌恶之后仍然有一些活动的事件（特别是EVT_MOVE，EVT_SIZE）链接到TextCtrlAutoComplete.onControlChanged方法。这会导致死对象错误。所以，我的问题是有没有办法清理所有链接到特定对象方法的事件。现在TextCtrlAutoComplete将事件绑定到self以及上面的所有父母：

    gp = self
    while ( gp != None ) :
        gp.Bind ( wx.EVT_MOVE , self.onControlChanged, gp )
        gp.Bind ( wx.EVT_SIZE , self.onControlChanged, gp )
        gp = gp.GetParent()

问题是，在调用Destroy（）之后，这些事件仍处于活动状态！

以下是非常简单的应用程序，它展示了这个错误。

import wx
from wxext.TextCtrlAutoComplete import TextCtrlAutoComplete

########################################################################
class PanelOne(wx.Panel):
    """"""

    #----------------------------------------------------------------------
    def __init__(self, parent):
        """Constructor"""
        wx.Panel.__init__(self, parent)

        self.txt = wx.StaticText(self, label="Panel One")
        self.txt.SetFont(wx.Font(14,wx.DEFAULT,wx.NORMAL,wx.BOLD))
        self.button1 = wx.Button(self, id=-1, label='Button1', pos=(8, 8), size=(175, 28))
        self.button1.Bind(wx.EVT_BUTTON, self.onButton1Click)
        self.sizer = wx.BoxSizer(wx.VERTICAL)
        self.sizer.Add(self.txt, 1, flag=wx.EXPAND | wx.ALL, border=20)
        self.sizer.Add(self.button1, 1, flag=wx.ALIGN_CENTER | wx.ALL, border=20)
        self.SetSizer(self.sizer)

    def onButton1Click(self,event):
        if (self.GetParent().panelTwo):
            self.SetBackgroundColour("lightblue")
            self.GetParent().panelTwo.Destroy()
            self.txt.SetLabel("Move of Size event lead to BUG")
            self.SetSizer(self.sizer)
        else:
            self.SetBackgroundColour("lightgrey")

########################################################################
class PanelTwo(wx.Panel):
    """"""

    #----------------------------------------------------------------------
    def __init__(self, parent):
        """Constructor"""
        wx.Panel.__init__(self, parent)
        self.SetBackgroundColour("darkgreen")
        self.txt = wx.StaticText(self, label="Panel Two")
        self.txt.SetFont(wx.Font(14,wx.DEFAULT,wx.NORMAL,wx.BOLD))
        self.searchbox = TextCtrlAutoComplete(self, choices=['No parameter found'])
        self.sizer = wx.BoxSizer(wx.VERTICAL)
        self.sizer.Add(self.txt, 1, flag=wx.ALIGN_CENTER | wx.ALL, border=20)
        self.sizer.Add(self.searchbox, 1, flag=wx.ALIGN_CENTER | wx.ALL, border=20)
        self.SetSizer(self.sizer)



########################################################################
class MainFrame(wx.Frame):
    """"""

    #----------------------------------------------------------------------
    def __init__(self):
        """Constructor"""
        wx.Frame.__init__(self, None, title="Bug")
        self.panelOne = PanelOne(self)
        self.panelTwo = PanelTwo(self)

        self.sizer = wx.BoxSizer(wx.VERTICAL)
        self.sizer.Add(self.panelOne, 1, wx.EXPAND)
        self.sizer.Add(self.panelTwo, 1, wx.EXPAND)
        self.SetSizer(self.sizer)


if __name__ == "__main__":
    app = wx.App(False)
    frame = MainFrame()
    frame.Show()
    app.MainLoop()

wxpython TextCtrlAutoComplete小部件在破坏后崩溃（事件问题）

0 个答案: