在UltimateListCtrl中對項目排序

Question

我想創建一個最終列表ctrl的表格，用戶可以通過單擊列標題對列進行排序。以下是我嘗試的代碼：

import wx 
import wx.lib.mixins.listctrl as listmix 
from wx.lib.agw import ultimatelistctrl as ULC 

APPNAME='Sortable Ultimate List Ctrl' 
APPVERSION='1.0' 
MAIN_WIDTH=300 
MAIN_HEIGHT=300 

musicdata = { 
0 : ("Bad English", "The Price Of Love"), 
1 : ("DNA featuring Suzanne Vega", "Tom's Diner"), 
2 : ("George Michael", "Praying For Time"), 
3 : ("Gloria Estefan", "Here We Are"), 
4 : ("Linda Ronstadt", "Don't Know Much"), 
5 : ("Michael Bolton", "How Am I Supposed To Live Without You"), 
6 : ("Paul Young", "Oh Girl"), 
} 

######################################################################## 
class TestUltimateListCtrlPanel(wx.Panel, listmix.ColumnSorterMixin): 

    #---------------------------------------------------------------------- 
    def __init__(self, parent): 
     wx.Panel.__init__(self, parent, -1, style=wx.WANTS_CHARS, size=(MAIN_WIDTH,MAIN_HEIGHT)) 

     self.index = 0 

     self.list_ctrl = ULC.UltimateListCtrl(self, -1, agwStyle=ULC.ULC_REPORT|ULC.ULC_HAS_VARIABLE_ROW_HEIGHT) 
     self.list_ctrl.InsertColumn(0, "Artist") 
     self.list_ctrl.InsertColumn(1, "Title", wx.LIST_FORMAT_RIGHT) 
     self.list_ctrl.InsertColumn(2, "Download") 

     items = musicdata.items() 
     index = 0 
     for key, data in items: 
      pos=self.list_ctrl.InsertStringItem(index, data[0]) 
      self.list_ctrl.SetStringItem(index, 1, data[1]) 
      #self.list_ctrl.SetStringItem(index, 2, data[2]) 
      button = wx.Button(self.list_ctrl, id=wx.ID_ANY, label="Download") 
       self.list_ctrl.SetItemWindow(pos, col=2, wnd=button, expand=True) 
      self.list_ctrl.SetItemData(index, key) 
      index += 1 

     # Now that the list exists we can init the other base class, 
     # see wx/lib/mixins/listctrl.py 
     self.itemDataMap = musicdata 
     listmix.ColumnSorterMixin.__init__(self, 3) 
     self.Bind(wx.EVT_LIST_COL_CLICK, self.OnColClick, self.list_ctrl) 

     sizer = wx.BoxSizer(wx.VERTICAL) 
     sizer.Add(self.list_ctrl, 1, wx.ALL|wx.EXPAND, 5) 
     self.SetSizer(sizer) 


    def GetListCtrl(self): 
     return self.list_ctrl 

    #---------------------------------------------------------------------- 
    def OnColClick(self, event): 
     pass 

######################################################################## 
class MyForm(wx.Frame): 

    #---------------------------------------------------------------------- 
    def __init__(self): 
     wx.Frame.__init__(self,None,wx.ID_ANY,'%s v%s' % (APPNAME,APPVERSION),size=(MAIN_WIDTH,MAIN_HEIGHT),style=wx.MINIMIZE_BOX | wx.SYSTEM_MENU | wx.CAPTION | wx.CLOSE_BOX | wx.CLIP_CHILDREN) 

     # Add a panel so it looks the correct on all platforms 
     panel = TestUltimateListCtrlPanel(self) 

#---------------------------------------------------------------------- 
# Run the program 
if __name__ == "__main__": 
    app = wx.App(False) 
    frame = MyForm() 
    frame.Show() 
    app.MainLoop()[/CODE] 

單擊該列不會對'藝術家'或'標題'字段進行排序。我希望能夠在用戶點擊列標題時對它們進行排序。請幫忙。

這是怎麼看起來像

Answer 1

這似乎是在UltimateListControl執行錯誤。點擊列後，它不會自行刷新。這個工作對我來說：

DATA = { 
0 : ("3", "3", "1"), 
1 : ("2", "1", "2"), 
2 : ("1", "2", "3") 
} 

import wx 
import wx.lib.mixins.listctrl as listmix 
from wx.lib.agw import ultimatelistctrl as ULC 

class MyList(ULC.UltimateListCtrl, listmix.ColumnSorterMixin): 
    def __init__(self, parent, columns): 
     ULC.UltimateListCtrl.__init__(self, parent, agwStyle=ULC.ULC_REPORT | ULC.ULC_HAS_VARIABLE_ROW_HEIGHT) 
     self.itemDataMap = DATA 
     listmix.ColumnSorterMixin.__init__(self, columns) 
     self.Bind(wx.EVT_LIST_COL_CLICK, self.OnColumn) 

    def OnColumn(self, e): 
     self.Refresh() 
     e.Skip() 

    def GetListCtrl(self): 
     return self 

class MainWindow(wx.Frame): 
    def __init__(self, *args, **kwargs): 
     wx.Frame.__init__(self, *args, **kwargs) 

     self.list = MyList(self, 3) 
     self.list.InsertColumn(0, "A") 
     self.list.InsertColumn(1, "B") 
     self.list.InsertColumn(2, "C") 

     items = DATA.items() 
     for key, data in items: 
      index = self.list.Append(data) 
      self.list.SetItemData(index, key) 

     self.Show() 

app = wx.App(False) 
win = MainWindow(None) 
app.MainLoop() 

僅作參考，它的工作原理與普通的ListCtrl預期：

DATA = { 
0 : ("3", "3", "1"), 
1 : ("2", "1", "2"), 
2 : ("1", "2", "3") 
} 

import wx 
import wx.lib.mixins.listctrl as listmix 

class MyList(wx.ListCtrl, listmix.ColumnSorterMixin): 
    def __init__(self, parent, columns): 
     wx.ListCtrl.__init__(self, parent, style=wx.LC_REPORT) 
     self.itemDataMap = DATA 
     listmix.ColumnSorterMixin.__init__(self, columns) 

    def GetListCtrl(self): 
     return self 

class MainWindow(wx.Frame): 
    def __init__(self, *args, **kwargs): 
     wx.Frame.__init__(self, *args, **kwargs) 

     self.list = MyList(self, 3) 
     self.list.InsertColumn(0, "A") 
     self.list.InsertColumn(1, "B") 
     self.list.InsertColumn(2, "C") 

     items = DATA.items() 
     for key, data in items: 
      index = self.list.Append(data) 
      self.list.SetItemData(index, key) 

     self.Show() 

app = wx.App(False) 
win = MainWindow(None) 
app.MainLoop() 

它可以固定在wxPython中的一個新版本：http://trac.wxwidgets.org/changeset/68347