删除 ListCtrl 中的项目 Python
Delete item in ListCtrl Python
如何清除 Python 中的列表 ctrl？
例如，当我插入第 10 个项目时，前 8 个项目从 listCtrl 中删除，可以继续在 listCtrl 中输入项目。
我该怎么做？
示例：
我插入：1,2,3,4,5,6,7,8,9,10 在我在 listCtrl 中看到的第 10 个项目之后只有 8,9,10，我可以再次插入项目。
我在示例中添加了一些代码。
import wx
import wx.gizmos as gizmos
import time
import datetime
from datetime import timedelta
class CWindow(wx.Frame):
def __init__(self, parent, id, title):
wx.Frame.__init__(self, parent, id, title, style = wx.DEFAULT_FRAME_STYLE & ~ wx.CLOSE_BOX ^ wx.MAXIMIZE_BOX ^ wx.RESIZE_BORDER, size=(600,500))
dataCorrente = datetime.datetime.now()
self.Panel = wx.Panel(self, -1)
self.index = 0
self.ceck = {}
self.ts = ""
self.CTesto = wx.TextCtrl(self.Panel, 1, pos=(10,40), style=wx.TE_PROCESS_ENTER)
self.CTesto.Bind(wx.EVT_TEXT_ENTER,self.add_line)
self.BtnConferma = wx.Button(self.Panel, 12, "Conferma", pos=(130,38))
self.list_ctrl = wx.ListCtrl(self.Panel, pos=(10,90),size=(-1,330),style=wx.LC_REPORT|wx.BORDER_SUNKEN)
self.list_ctrl.InsertColumn(0, 'Name')
self.list_ctrl.InsertColumn(1, 'Start')
self.list_ctrl.InsertColumn(2, 'Finish', width=100)
wx.Button(self.Panel, 22, "Exit", pos=wx.Point(470,400))
self.Bind(wx.EVT_BUTTON, self.close, id=22)
self.Bind(wx.EVT_BUTTON, self.add_line, self.BtnConferma, id=12)
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(self.list_ctrl, 0, wx.ALL|wx.EXPAND, 5)
sizer.Add(self.BtnConferma, 0, wx.ALL|wx.CENTER, 5)
self.led = gizmos.LEDNumberCtrl(self.Panel, -1, pos = (350,25), size = (200,50), style = gizmos.LED_ALIGN_CENTER)
self.led.SetBackgroundColour("#c0c0c0")
self.led.SetForegroundColour("black")
self.OnTimer(None)
self.timer = wx.Timer(self, -1)
self.timer.Start(1000)
self.Bind(wx.EVT_TIMER, self.OnTimer)
style = gizmos.LED_ALIGN_CENTER
def OnTimer(self, event):
current = time.localtime(time.time())
self.ts = time.strftime("%H:%M:%S", current)
self.led.SetValue(self.ts)
if self.ts in self.ceck:
self.list_ctrl.SetItemTextColour(self.ceck.get(self.ts), wx.WHITE)
self.list_ctrl.SetItemBackgroundColour(self.ceck.pop(self.ts), wx.RED)
def add_line(self,event):
val = str(self.CTesto.GetValue())
if val== '':
msg = wx.MessageDialog(self, "Error", "Error", wx.OK| wx.ICON_ERROR)
msg.ShowModal()
msg.Destroy()
else:
if self.list_ctrl.GetItemCount() == 10:
for i in range(7):
self.list_ctrl.DeleteItem(1)
dataCorrente = datetime.datetime.now()
oraAttuale =(dataCorrente.strftime("%H:%M:%S"))
plus = (datetime.datetime.strptime(oraAttuale, "%H:%M:%S") + datetime.timedelta(minutes=1))
global plus2
plus2 = plus.strftime("%H:%M:%S")
if plus2 in self.ceck:
msg = wx.MessageDialog(self, "Duplicate Time", "Error", wx.OK| wx.ICON_ERROR)
msg.ShowModal()
msg.Destroy()
return
self.list_ctrl.InsertItem(self.index, val)
self.list_ctrl.SetItem(self.index, 1, oraAttuale)
self.list_ctrl.SetItem(self.index, 2, str(plus2))
self.index += 1
InsVal = (val + " - " + oraAttuale + " - " + plus2 + '\n')
self.CTesto.Clear()
self.ceck[plus2] = self.index -1
def close(self,event):
hDialog=wx.MessageDialog(self, "°°°", "Exit", wx.OK|wx.CANCEL| wx.ICON_EXCLAMATION)
rispostaDialog=hDialog.ShowModal()
hDialog.Destroy()
if rispostaDialog == wx.ID_OK:
self.Destroy()
app = wx.App()
frame = CWindow(None, -1, "Example")
frame.Show()
frame.Center()
app.MainLoop()
您似乎已经（从原来的 post）回到按输入顺序而不是反向输入顺序排列 listctrl 项目。这意味着您必须再次删除索引 0 而不是索引 1。
如果您刚刚删除了 7 个条目，您也不允许这样的事实，即字典值现在无效。如果项目已被删除，则必须删除它们；如果它们已留在原处，则必须重置为新索引值。
试试这个，看看它是否能让你更接近你想要实现的目标：
import wx
import wx.gizmos as gizmos
import time
import datetime
from datetime import timedelta
class CWindow(wx.Frame):
def __init__(self, parent, id, title):
wx.Frame.__init__(self, parent, id, title, style = wx.DEFAULT_FRAME_STYLE & ~ wx.CLOSE_BOX ^ wx.MAXIMIZE_BOX ^ wx.RESIZE_BORDER, size=(600,500))
dataCorrente = datetime.datetime.now()
self.Panel = wx.Panel(self, -1)
self.index = 0
self.ceck = {}
self.ts = ""
self.CTesto = wx.TextCtrl(self.Panel, 1, pos=(10,40), style=wx.TE_PROCESS_ENTER)
self.CTesto.Bind(wx.EVT_TEXT_ENTER,self.add_line)
self.BtnConferma = wx.Button(self.Panel, 12, "Conferma", pos=(130,38))
self.list_ctrl = wx.ListCtrl(self.Panel, pos=(10,90),size=(-1,330),style=wx.LC_REPORT|wx.BORDER_SUNKEN)
self.list_ctrl.InsertColumn(0, 'Name')
self.list_ctrl.InsertColumn(1, 'Start')
self.list_ctrl.InsertColumn(2, 'Finish', width=100)
wx.Button(self.Panel, 22, "Exit", pos=wx.Point(470,400))
self.Bind(wx.EVT_BUTTON, self.close, id=22)
self.Bind(wx.EVT_BUTTON, self.add_line, self.BtnConferma, id=12)
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(self.list_ctrl, 0, wx.ALL|wx.EXPAND, 5)
sizer.Add(self.BtnConferma, 0, wx.ALL|wx.CENTER, 5)
self.led = gizmos.LEDNumberCtrl(self.Panel, -1, pos = (350,25), size = (200,50), style = gizmos.LED_ALIGN_CENTER)
self.led.SetBackgroundColour("#c0c0c0")
self.led.SetForegroundColour("black")
self.OnTimer(None)
self.timer = wx.Timer(self, -1)
self.timer.Start(1000)
self.Bind(wx.EVT_TIMER, self.OnTimer)
style = gizmos.LED_ALIGN_CENTER
def OnTimer(self, event):
current = time.localtime(time.time())
self.ts = time.strftime("%H:%M:%S", current)
self.led.SetValue(self.ts)
if self.ts in self.ceck:
self.list_ctrl.SetItemTextColour(self.ceck.get(self.ts), wx.WHITE)
self.list_ctrl.SetItemBackgroundColour(self.ceck.pop(self.ts), wx.RED)
def add_line(self,event):
val = str(self.CTesto.GetValue())
if val== '':
msg = wx.MessageDialog(self, "Error", "Error", wx.OK| wx.ICON_ERROR)
msg.ShowModal()
msg.Destroy()
else:
if self.list_ctrl.GetItemCount() == 10:
for i in range(7):
d = self.list_ctrl.GetItem(0,2)
del_text = d.GetText()
#remove the dictionary values for the items being deleted
try: # It may already have been popped from the dict if the colour was changed
self.ceck.pop(del_text)
except:
pass
self.list_ctrl.DeleteItem(0)
self.index -= 1
#reset the dictionary vales for the existing ctrl items they have new index values
new_idx = 0
for i in range (3):
item = self.list_ctrl.GetItemText(i,2)
self.ceck[item] = new_idx
new_idx += 1
dataCorrente = datetime.datetime.now()
oraAttuale =(dataCorrente.strftime("%H:%M:%S"))
plus = (datetime.datetime.strptime(oraAttuale, "%H:%M:%S") + datetime.timedelta(minutes=1))
global plus2
plus2 = plus.strftime("%H:%M:%S")
if plus2 in self.ceck:
msg = wx.MessageDialog(self, "Duplicate Time", "Error", wx.OK| wx.ICON_ERROR)
msg.ShowModal()
msg.Destroy()
return
self.list_ctrl.InsertItem(self.index, val)
self.list_ctrl.SetItem(self.index, 1, oraAttuale)
self.list_ctrl.SetItem(self.index, 2, str(plus2))
self.index += 1
InsVal = (val + " - " + oraAttuale + " - " + plus2 + '\n')
self.CTesto.Clear()
self.ceck[plus2] = self.index -1
def close(self,event):
hDialog=wx.MessageDialog(self, "°°°", "Exit", wx.OK|wx.CANCEL| wx.ICON_EXCLAMATION)
rispostaDialog=hDialog.ShowModal()
hDialog.Destroy()
if rispostaDialog == wx.ID_OK:
self.Destroy()
app = wx.App()
frame = CWindow(None, -1, "Example")
frame.Show()
frame.Center()
app.MainLoop()
如何清除 Python 中的列表 ctrl？
例如，当我插入第 10 个项目时，前 8 个项目从 listCtrl 中删除，可以继续在 listCtrl 中输入项目。
我该怎么做？
示例：
我插入：1,2,3,4,5,6,7,8,9,10 在我在 listCtrl 中看到的第 10 个项目之后只有 8,9,10，我可以再次插入项目。
我在示例中添加了一些代码。
import wx
import wx.gizmos as gizmos
import time
import datetime
from datetime import timedelta
class CWindow(wx.Frame):
def __init__(self, parent, id, title):
wx.Frame.__init__(self, parent, id, title, style = wx.DEFAULT_FRAME_STYLE & ~ wx.CLOSE_BOX ^ wx.MAXIMIZE_BOX ^ wx.RESIZE_BORDER, size=(600,500))
dataCorrente = datetime.datetime.now()
self.Panel = wx.Panel(self, -1)
self.index = 0
self.ceck = {}
self.ts = ""
self.CTesto = wx.TextCtrl(self.Panel, 1, pos=(10,40), style=wx.TE_PROCESS_ENTER)
self.CTesto.Bind(wx.EVT_TEXT_ENTER,self.add_line)
self.BtnConferma = wx.Button(self.Panel, 12, "Conferma", pos=(130,38))
self.list_ctrl = wx.ListCtrl(self.Panel, pos=(10,90),size=(-1,330),style=wx.LC_REPORT|wx.BORDER_SUNKEN)
self.list_ctrl.InsertColumn(0, 'Name')
self.list_ctrl.InsertColumn(1, 'Start')
self.list_ctrl.InsertColumn(2, 'Finish', width=100)
wx.Button(self.Panel, 22, "Exit", pos=wx.Point(470,400))
self.Bind(wx.EVT_BUTTON, self.close, id=22)
self.Bind(wx.EVT_BUTTON, self.add_line, self.BtnConferma, id=12)
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(self.list_ctrl, 0, wx.ALL|wx.EXPAND, 5)
sizer.Add(self.BtnConferma, 0, wx.ALL|wx.CENTER, 5)
self.led = gizmos.LEDNumberCtrl(self.Panel, -1, pos = (350,25), size = (200,50), style = gizmos.LED_ALIGN_CENTER)
self.led.SetBackgroundColour("#c0c0c0")
self.led.SetForegroundColour("black")
self.OnTimer(None)
self.timer = wx.Timer(self, -1)
self.timer.Start(1000)
self.Bind(wx.EVT_TIMER, self.OnTimer)
style = gizmos.LED_ALIGN_CENTER
def OnTimer(self, event):
current = time.localtime(time.time())
self.ts = time.strftime("%H:%M:%S", current)
self.led.SetValue(self.ts)
if self.ts in self.ceck:
self.list_ctrl.SetItemTextColour(self.ceck.get(self.ts), wx.WHITE)
self.list_ctrl.SetItemBackgroundColour(self.ceck.pop(self.ts), wx.RED)
def add_line(self,event):
val = str(self.CTesto.GetValue())
if val== '':
msg = wx.MessageDialog(self, "Error", "Error", wx.OK| wx.ICON_ERROR)
msg.ShowModal()
msg.Destroy()
else:
if self.list_ctrl.GetItemCount() == 10:
for i in range(7):
self.list_ctrl.DeleteItem(1)
dataCorrente = datetime.datetime.now()
oraAttuale =(dataCorrente.strftime("%H:%M:%S"))
plus = (datetime.datetime.strptime(oraAttuale, "%H:%M:%S") + datetime.timedelta(minutes=1))
global plus2
plus2 = plus.strftime("%H:%M:%S")
if plus2 in self.ceck:
msg = wx.MessageDialog(self, "Duplicate Time", "Error", wx.OK| wx.ICON_ERROR)
msg.ShowModal()
msg.Destroy()
return
self.list_ctrl.InsertItem(self.index, val)
self.list_ctrl.SetItem(self.index, 1, oraAttuale)
self.list_ctrl.SetItem(self.index, 2, str(plus2))
self.index += 1
InsVal = (val + " - " + oraAttuale + " - " + plus2 + '\n')
self.CTesto.Clear()
self.ceck[plus2] = self.index -1
def close(self,event):
hDialog=wx.MessageDialog(self, "°°°", "Exit", wx.OK|wx.CANCEL| wx.ICON_EXCLAMATION)
rispostaDialog=hDialog.ShowModal()
hDialog.Destroy()
if rispostaDialog == wx.ID_OK:
self.Destroy()
app = wx.App()
frame = CWindow(None, -1, "Example")
frame.Show()
frame.Center()
app.MainLoop()
您似乎已经（从原来的 post）回到按输入顺序而不是反向输入顺序排列 listctrl 项目。这意味着您必须再次删除索引 0 而不是索引 1。
如果您刚刚删除了 7 个条目，您也不允许这样的事实，即字典值现在无效。如果项目已被删除，则必须删除它们；如果它们已留在原处，则必须重置为新索引值。
试试这个，看看它是否能让你更接近你想要实现的目标：
import wx
import wx.gizmos as gizmos
import time
import datetime
from datetime import timedelta
class CWindow(wx.Frame):
def __init__(self, parent, id, title):
wx.Frame.__init__(self, parent, id, title, style = wx.DEFAULT_FRAME_STYLE & ~ wx.CLOSE_BOX ^ wx.MAXIMIZE_BOX ^ wx.RESIZE_BORDER, size=(600,500))
dataCorrente = datetime.datetime.now()
self.Panel = wx.Panel(self, -1)
self.index = 0
self.ceck = {}
self.ts = ""
self.CTesto = wx.TextCtrl(self.Panel, 1, pos=(10,40), style=wx.TE_PROCESS_ENTER)
self.CTesto.Bind(wx.EVT_TEXT_ENTER,self.add_line)
self.BtnConferma = wx.Button(self.Panel, 12, "Conferma", pos=(130,38))
self.list_ctrl = wx.ListCtrl(self.Panel, pos=(10,90),size=(-1,330),style=wx.LC_REPORT|wx.BORDER_SUNKEN)
self.list_ctrl.InsertColumn(0, 'Name')
self.list_ctrl.InsertColumn(1, 'Start')
self.list_ctrl.InsertColumn(2, 'Finish', width=100)
wx.Button(self.Panel, 22, "Exit", pos=wx.Point(470,400))
self.Bind(wx.EVT_BUTTON, self.close, id=22)
self.Bind(wx.EVT_BUTTON, self.add_line, self.BtnConferma, id=12)
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(self.list_ctrl, 0, wx.ALL|wx.EXPAND, 5)
sizer.Add(self.BtnConferma, 0, wx.ALL|wx.CENTER, 5)
self.led = gizmos.LEDNumberCtrl(self.Panel, -1, pos = (350,25), size = (200,50), style = gizmos.LED_ALIGN_CENTER)
self.led.SetBackgroundColour("#c0c0c0")
self.led.SetForegroundColour("black")
self.OnTimer(None)
self.timer = wx.Timer(self, -1)
self.timer.Start(1000)
self.Bind(wx.EVT_TIMER, self.OnTimer)
style = gizmos.LED_ALIGN_CENTER
def OnTimer(self, event):
current = time.localtime(time.time())
self.ts = time.strftime("%H:%M:%S", current)
self.led.SetValue(self.ts)
if self.ts in self.ceck:
self.list_ctrl.SetItemTextColour(self.ceck.get(self.ts), wx.WHITE)
self.list_ctrl.SetItemBackgroundColour(self.ceck.pop(self.ts), wx.RED)
def add_line(self,event):
val = str(self.CTesto.GetValue())
if val== '':
msg = wx.MessageDialog(self, "Error", "Error", wx.OK| wx.ICON_ERROR)
msg.ShowModal()
msg.Destroy()
else:
if self.list_ctrl.GetItemCount() == 10:
for i in range(7):
d = self.list_ctrl.GetItem(0,2)
del_text = d.GetText()
#remove the dictionary values for the items being deleted
try: # It may already have been popped from the dict if the colour was changed
self.ceck.pop(del_text)
except:
pass
self.list_ctrl.DeleteItem(0)
self.index -= 1
#reset the dictionary vales for the existing ctrl items they have new index values
new_idx = 0
for i in range (3):
item = self.list_ctrl.GetItemText(i,2)
self.ceck[item] = new_idx
new_idx += 1
dataCorrente = datetime.datetime.now()
oraAttuale =(dataCorrente.strftime("%H:%M:%S"))
plus = (datetime.datetime.strptime(oraAttuale, "%H:%M:%S") + datetime.timedelta(minutes=1))
global plus2
plus2 = plus.strftime("%H:%M:%S")
if plus2 in self.ceck:
msg = wx.MessageDialog(self, "Duplicate Time", "Error", wx.OK| wx.ICON_ERROR)
msg.ShowModal()
msg.Destroy()
return
self.list_ctrl.InsertItem(self.index, val)
self.list_ctrl.SetItem(self.index, 1, oraAttuale)
self.list_ctrl.SetItem(self.index, 2, str(plus2))
self.index += 1
InsVal = (val + " - " + oraAttuale + " - " + plus2 + '\n')
self.CTesto.Clear()
self.ceck[plus2] = self.index -1
def close(self,event):
hDialog=wx.MessageDialog(self, "°°°", "Exit", wx.OK|wx.CANCEL| wx.ICON_EXCLAMATION)
rispostaDialog=hDialog.ShowModal()
hDialog.Destroy()
if rispostaDialog == wx.ID_OK:
self.Destroy()
app = wx.App()
frame = CWindow(None, -1, "Example")
frame.Show()
frame.Center()
app.MainLoop()