我已经看到了可以在类之间共享变量的问题 - 我通常可以很容易地做到这一点。但是，我试图在wx.Frame和自定义列表控件之间共享变量。本质上，我有一个带有可编辑ListCtrl的类，它使用字典对列表中的值进行排序。我通常只是将字典设为全局变量，但我试图从代码中完全删除全局变量。如何从wx.Frame类引用ListCtrl类中的字典？下面是代码的片段。
谢谢！
class TMainForm(wx.Frame):
def __init__(self, *args, **kwds):
kwds["style"] = wx.DEFAULT_FRAME_STYLE
wx.Frame.__init__(self, *args, **kwds)
self.Splitter = wx.SplitterWindow(self, -1)
self.Panel1 = wx.Panel(self.Splitter, -1)
self.Panel3 = wx.Panel(self.Splitter, -1)
self.Splitter.SplitVertically(self.Panel1,self.Panel3,450)
self.Notebook2 = wx.Notebook(self.Panel1, -1)
# This is the Panel my list is in
self.List1 = scrolled.ScrolledPanel(self.Notebook2, -1)
self.List1.SetupScrolling()
# This custom function creates the dictionary for list 1 (labeled self.List1Data)
self.CreateDictionary()
# This sets up the listctrl to reference the class EditableListCtrl
self.List1_list = EditableListCtrl(self.List1,-1,style=wx.LC_REPORT|wx.LC_SINGLE_SEL)
self.List1_list.InsertColumn(1,'Col 1')
self.List1_list.InsertColumn(2,'Col 2',format=wx.LIST_FORMAT_CENTRE)
items = self.List1Data.items()
index = 0
for key, data in items:
self.List1_list.InsertStringItem(index, data[0])
self.List1_list.SetStringItem(index, 1, data[1])
self.List1_list.SetItemData(index, key)
index += 1
self.List1_list.itemDataMap = self.List1Data
#...
# In this class i have "List1Data" which is a global variable. I want to grab self.List1Data
# from the TMainForm class and use it in here (instead of the List1Data global variable).
class EditableListCtrl(wx.ListCtrl, listmix.TextEditMixin, listmix.ColumnSorterMixin):
def __init__(self, parent, ID=wx.ID_ANY, pos=wx.DefaultPosition,
size=wx.DefaultSize, style=0):
wx.ListCtrl.__init__(self, parent, ID, pos, size, style)
listmix.ColumnSorterMixin.__init__(self, len(List1Data))
self.itemDataMap = List1Data
def GetListCtrl(self):
return self
尝试遵循以下建议的答案：
class EditableListCtrl(wx.ListCtrl, listmix.TextEditMixin, listmix.ColumnSorterMixin):
def __init__(self, parent, ID=wx.ID_ANY, pos=wx.DefaultPosition,
size=wx.DefaultSize, style=0):
wx.ListCtrl.__init__(self, parent, ID, pos, size, style)
listmix.ColumnSorterMixin.__init__(self, len(self.List1Data))
self.itemDataMap = self.List1Data
def get_dict(self):
return self.List1Data
def GetListCtrl(self):
return self
*编辑**
我的问题的完整可运行代码。请参阅注释 - 我希望能够在EditableListCtrl类中引用TMainForm中的self.List1Data。谢谢！
import os
import wx
import wx.lib.mixins.listctrl as listmix
import wx.lib.scrolledpanel as scrolled
class TMainForm(wx.Frame):
def __init__(self, *args, **kwds):
kwds["style"] = wx.DEFAULT_FRAME_STYLE
wx.Frame.__init__(self, *args, **kwds)
self.Splitter = wx.SplitterWindow(self, -1)
self.Panel1 = wx.Panel(self.Splitter, -1)
self.Panel3 = wx.Panel(self.Splitter, -1)
self.Splitter.SplitVertically(self.Panel1,self.Panel3,450)
self.Notebook2 = wx.Notebook(self.Panel1, -1)
self.List1 = scrolled.ScrolledPanel(self.Notebook2, -1)
self.List1.SetupScrolling()
self.UpdateData()
self.List1_list = EditableListCtrl(self.List1,-1,style=wx.LC_REPORT|wx.LC_SINGLE_SEL)
self.List1_list.InsertColumn(1,'Col 1')
self.List1_list.InsertColumn(2,'Col 2',format=wx.LIST_FORMAT_CENTRE)
self.Update_List()
self.List1_list.SetColumnWidth(0,-2)
self.List1_list.SetColumnWidth(1,-2)
self.Notebook3 = wx.Notebook(self.Panel3, -1)
self.OptPane = scrolled.ScrolledPanel(self.Notebook3, -1)
self.OptPane.SetupScrolling()
self.__set_properties()
self.__do_layout()
def __set_properties(self): # Set GUI Title and Size
self.screen_x = 95 * wx.GetDisplaySize()[0]/100
self.screen_y = 90 * wx.GetDisplaySize()[1]/100
if wx.GetDisplaySize()[0] < 1920:
self.Maximize(True)
else:
self.SetSize((self.screen_x, self.screen_y))
self.SetMinSize((1280,768))
self.SetFocus()
def __do_layout(self , call_fit = True, set_sizer = True):
sizer_22 = wx.BoxSizer(wx.VERTICAL)
sizer_22.Add(self.List1_list,1,wx.EXPAND)
self.List1.SetSizer(sizer_22)
self.Notebook2.AddPage(self.List1,"List1")
sizer_P2 = wx.BoxSizer(wx.VERTICAL)
sizer_P2.Add(self.Notebook2, 1, wx.EXPAND, 0)
self.Panel1.SetSizer(sizer_P2)
sizer_P3 = wx.BoxSizer(wx.VERTICAL)
sizer_P3.Add(self.Notebook3, 1, wx.EXPAND, 0)
self.Panel3.SetSizer(sizer_P3)
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(self.Splitter,1,wx.EXPAND)
self.SetSizer(sizer)
self.Layout()
self.Centre()
def Update_List(self):
#items = self.List1Data.items()
items = LD1.items()
index = 0
for key, data in items:
self.List1_list.InsertStringItem(index, str(data[0]))
self.List1_list.SetStringItem(index, 1, str(data[1]))
self.List1_list.SetItemData(index, key)
index += 1
#self.List1_list.itemDataMap = self.List1Data
self.List1_list.itemDataMap = LD1
def UpdateData(self):
self.List1Data = {}
self.List1Data[0] = (1,2,3)
self.List1Data[1] = (4,5,6)
global LD1
LD1 = self.List1Data
class EditableListCtrl(wx.ListCtrl, listmix.TextEditMixin, listmix.ColumnSorterMixin):
# I want to be able to get self.List1Data from TMainForm here instead of LD1
#print TMainForm.List1Data
def __init__(self, parent, ID=wx.ID_ANY, pos=wx.DefaultPosition,
size=wx.DefaultSize, style=0):
wx.ListCtrl.__init__(self, parent, ID, pos, size, style)
listmix.ColumnSorterMixin.__init__(self, len(LD1))
self.itemDataMap = LD1
def get_dict(self):
return self.List1Data
def GetListCtrl(self):
return self
app = wx.App(0)
# Code to Execute File
class TApplication(wx.App):
def OnInit(self):
wx.InitAllImageHandlers()
MainForm = TMainForm(None, -1,"")
self.SetTopWindow(MainForm)
MainForm.Show()
return 1
if __name__ == "__main__":
Application = TApplication(0)
Application.MainLoop()
尝试访问TMainForm中的List1Data时出错：
Traceback (most recent call last):
File "C:/Users/Me/Documents/test.py", line 103, in <module>
class EditableListCtrl(wx.ListCtrl, listmix.TextEditMixin, listmix.ColumnSorterMixin):
File "C:/Users/Me/Documents/test.py", line 106, in EditableListCtrl
print TMainForm.List1Data
AttributeError: type object 'TMainForm' has no attribute 'List1Data'
答案 0 :(得分：3)
class EditableListCtrl(wx.ListCtrl, listmix.TextEditMixin, listmix.ColumnSorterMixin):
List1Data={...dictionary item....}
def __init__(self):
### your other methods now
您只需使用以下命令即可从其他类中的任何位置访问List1Data：
EditableListCtrl.List1Data
从现在开始，List1Data是您的类定义的一部分。