Python 和使用 ListCtrl 进行多选

Question

我的应用程序中有一个自定义 listctrl，我希望能够选择多行(并取消选择)，就像在列表框中所做的那样。目前我有一个 listctrl，我可以获取单个选择；但是，一旦我单击 listctrl 中的另一行，即之前的“取消突出显示”。我希望它保持突出显示状态，除非我再次单击它 - 这样用户就知道他/她选择了哪些行(与列表框的工作方式完全相同)。我尝试将 wx.LC_MULTIPLE_SEL 添加到 listctrl 行，但这不起作用。

帮忙？谢谢!

我从 Mike Driscoll 的以下站点中获取了此示例 Python Blog 。我适应了它来获取行选择。本质上，我选择一行并将索引附加到名为 InfoList 的列表中。当我选择一个新行时，它会正确附加，但我希望该行在实际列表中保持“突出显示”。然后，如果我在 listctrl 中再次选择某个项目，我可以添加另一行以从列表中删除该项目。

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

很恶心，但这会做你想要的

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，由于您在 InfoList 中有选定元素的列表，因此类似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