带有ListCtrl的Python和多重select

Question

我的应用程序中有一个定制的listctrl，我希望能够选择多个行(并取消选择)，就像在ListBox中那样。目前，我有一个listctrl，我可以获取单一的选择；但是，一旦我点击另一行在我的listctrl，前面的“未突出显示”。我希望它保持高亮显示，除非我再次单击它--这样用户就知道他/她选择了哪些行(与ListBox的工作方式完全一样)。我试着将wx.LC_MULTIPLE_SEL添加到listctrl行，但这是行不通的。

帮助?谢谢!

我是从下面的Mike Python博客网站上学到这个例子的。我适应了它，以获得排选择。本质上，我选择一行，索引被附加到一个名为InfoList的列表中。当我选择一个新行时，它会正确地追加，但我希望该行在实际列表中保持“高亮显示”。然后，如果我在listctrl中再次选择一个项目，我可以添加另一行以从列表中删除它。

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

InfoList = []

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

########################################################################
class TestListCtrl(wx.ListCtrl):

    #----------------------------------------------------------------------
    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)

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

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

        self.list_ctrl = TestListCtrl(self, size=(-1,100),
                         style=wx.LC_REPORT
                         |wx.BORDER_SUNKEN
                         |wx.LC_SORT_ASCENDING
                         )
        self.list_ctrl.InsertColumn(0, "Artist")
        self.list_ctrl.InsertColumn(1, "Title", wx.LIST_FORMAT_RIGHT)
        self.list_ctrl.InsertColumn(2, "Genre")

        items = musicdata.items()
        index = 0
        for key, data in items:
            self.list_ctrl.InsertStringItem(index, data[0])
            self.list_ctrl.SetStringItem(index, 1, data[1])
            self.list_ctrl.SetStringItem(index, 2, data[2])
            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)

        ### I ADDED THIS ###
        self.Bind(wx.EVT_LIST_ITEM_SELECTED, self.OnSelectMustHave, self.list_ctrl)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(self.list_ctrl, 0, wx.ALL|wx.EXPAND, 5)
        self.SetSizer(sizer)

    ### I ADDED THIS ###
    def OnSelectMustHave(self,event):        
        info = event.GetData()
        InfoList.append(info)
        print info,InfoList

    #----------------------------------------------------------------------
    # Used by the ColumnSorterMixin, see wx/lib/mixins/listctrl.py
    def GetListCtrl(self):
        return self.list_ctrl

    #----------------------------------------------------------------------
    def OnColClick(self, event):
        print "column clicked"
        event.Skip()

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

    #----------------------------------------------------------------------
    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, "List Control Tutorial")

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

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

Answer 1

它很恶心，但这能做你想做的事

def OnSelectMustHave(self,event):        
    info = event.GetData()
    InfoList.append(info)
    def do_select():
          map(lambda x:self.list_ctrl.Select(x,1) ,set(InfoList))

    wx.CallLater(100,do_select)
    print info,InfoList
    return

但是，由于InfoList中有所选元素的列表，下面的解决方案可能会起作用

def OnSelectMustHave(self,event):        
    info = event.GetData()
    InfoList.append(info)
    map(lambda x:self.list_ctrl.SetItemBackgroundColour(x,wx.LIGHT_GREY) ,set(InfoList))
    print info,InfoList
    return

Answer 2

一个普通的ListCtrl工作：

import wx

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

    #----------------------------------------------------------------------
    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, "List Control Tutorial")

        # Add a panel so it looks the correct on all platforms
        panel = wx.Panel(self, wx.ID_ANY)
        self.index = 0

        self.list_ctrl = wx.ListCtrl(panel, size=(-1,100),
                         style=wx.LC_REPORT
                         |wx.BORDER_SUNKEN
                         )
        self.list_ctrl.InsertColumn(0, 'Subject')
        self.list_ctrl.InsertColumn(1, 'Due')
        self.list_ctrl.InsertColumn(2, 'Location', width=125)

        btn = wx.Button(panel, label="Add Line")
        btn.Bind(wx.EVT_BUTTON, self.add_line)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(self.list_ctrl, 1, wx.ALL|wx.EXPAND, 5)
        sizer.Add(btn, 0, wx.ALL|wx.CENTER, 5)
        panel.SetSizer(sizer)

    #----------------------------------------------------------------------
    def add_line(self, event):
        line = "Line %s" % self.index
        self.list_ctrl.InsertStringItem(self.index, line)
        self.list_ctrl.SetStringItem(self.index, 1, "01/19/2010")
        self.list_ctrl.SetStringItem(self.index, 2, "USA")
        self.index += 1

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

如果我修改它以使用您提到的两个混合器，它也会工作：

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

########################################################################
class MyListCtrl(wx.ListCtrl, listmix.TextEditMixin, listmix.ColumnSorterMixin):
    """"""

    #----------------------------------------------------------------------
    def __init__(self, parent):
        """Constructor"""
        wx.ListCtrl.__init__(self, parent, style=wx.LC_REPORT|wx.BORDER_SUNKEN)
        listmix.ColumnSorterMixin.__init__(self, 3)
        listmix.TextEditMixin.__init__(self)

    #----------------------------------------------------------------------
    def GetListCtrl(self):
        return self

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

    #----------------------------------------------------------------------
    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, "List Control Tutorial")

        # Add a panel so it looks the correct on all platforms
        panel = wx.Panel(self, wx.ID_ANY)
        self.index = 0

        self.list_ctrl = MyListCtrl(panel)
        self.list_ctrl.InsertColumn(0, 'Subject')
        self.list_ctrl.InsertColumn(1, 'Due')
        self.list_ctrl.InsertColumn(2, 'Location', width=125)

        btn = wx.Button(panel, label="Add Line")
        btn.Bind(wx.EVT_BUTTON, self.add_line)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(self.list_ctrl, 1, wx.ALL|wx.EXPAND, 5)
        sizer.Add(btn, 0, wx.ALL|wx.CENTER, 5)
        panel.SetSizer(sizer)

    #----------------------------------------------------------------------
    def add_line(self, event):
        line = "Line %s" % self.index
        self.list_ctrl.InsertStringItem(self.index, line)
        self.list_ctrl.SetStringItem(self.index, 1, "01/19/2010")
        self.list_ctrl.SetStringItem(self.index, 2, "USA")
        self.index += 1

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

我在Windows 7上使用wxPython 2.6和wxPython 2.8.12，我可以一次选择多个项目，也可以取消选择它们。