wxPython：第二和第三个面板不显示/错误

我的程序有3个面板，我通过隐藏2和显示1来切换。 1似乎工作，因为当我切换到第二或第三，框架是灰色的，除了在左上角的一个小白盒。这是什么造成的？任何帮助，将不胜感激。（代码供给下文）wxPython：第二和第三个面板不显示/错误

屏幕截图：

https://i.stack.imgur.com/3A6BN.png - 第一面板

https://i.stack.imgur.com/kiGPC.png - 第二面板

https://i.stack.imgur.com/dUUyZ.png - 第三面板

代码：

#!/usr/bin/python 

import wx 
import webbrowser 
from wx.lib import sized_controls 
from wx.lib.mixins.listctrl import ListCtrlAutoWidthMixin 
import sys 

employees = [('jessica alba', 'pomona', '1981'), ('sigourney weaver', 'new york', '1949'), 
    ('angelina jolie', 'los angeles', '1975'), ('natalie portman', 'jerusalem', '1981'), 
    ('rachel weiss', 'london', '1971'), ('scarlett johansson', 'new york', '1984'), ('jessica alba', 'pomona', '1981'), ('sigourney weaver', 'new york', '1949'), 
    ('angelina jolie', 'los angeles', '1975'), ('natalie portman', 'jerusalem', '1981'), 
    ('rachel weiss', 'london', '1971'), ('scarlett johansson', 'new york', '1984')] 

ID_GMAIL = wx.NewId() 
ID_OUTLOOK = wx.NewId() 

####################################################################################################################### 


class AutoWidthListCtrl(wx.ListCtrl, ListCtrlAutoWidthMixin): 
    def __init__(self, parent): 
     wx.ListCtrl.__init__(self, parent, -1, pos=(120, 55), size=(400, 240), style=wx.LC_REPORT) 
     ListCtrlAutoWidthMixin.__init__(self) 


class CustomDialog(sized_controls.SizedDialog): 
    def __init__(self, *args, **kwargs): 
     super(CustomDialog, self).__init__(*args, **kwargs) 
     pane = self.GetContentsPane() 

     static_text = wx.StaticText(pane, label='Choose Your Platform', style=wx.ALIGN_CENTER) 
     static_text.SetSizerProps(border=('all', 0), expand=True) 

     pane_btns = sized_controls.SizedPanel(pane) 
     pane_btns.SetSizerType('horizontal') 
     pane_btns.SetSizerProps(align='center') 

     button_ok = wx.Button(pane_btns, ID_GMAIL, label='Gmail') 
     button_ok.Bind(wx.EVT_BUTTON, self.on_button) 

     button_ok = wx.Button(pane_btns, ID_OUTLOOK, label='Outlook') 
     button_ok.Bind(wx.EVT_BUTTON, self.on_button) 

     self.Fit() 
     self.Centre() 

    def on_button(self, event): 
     if self.IsModal(): 
      self.EndModal(event.EventObject.Id) 
     else: 
      self.Close() 

####################################################################################################################### 

class GUI(wx.Frame): 
    def __init__(self, *args): 
     super(GUI, self).__init__(*args, 
            style=wx.MINIMIZE_BOX | wx.SYSTEM_MENU | wx.CAPTION | wx.CLOSE_BOX | wx.CLIP_CHILDREN) 

     self.InitUI() 

    def InitUI(self): 
     self.CreateStatusBar() 
     self.menubar = wx.MenuBar() 
     self.menu = wx.Menu() 

     self.add_entry = wx.MenuItem(self.menu, 3, '&Add Entry/View List\tShift+A', 'Add Employee to List/View List') 
     self.birthday_t = wx.MenuItem(self.menu, 1, '&Birthdays: Today\tShift+T', 'View Current Birthdays') 
     self.birthday_s = wx.MenuItem(self.menu, 2, '&Birthdays: In 7 Days\tShift+S', 'View Birthdays in 7 Days') 
     self.quit = wx.MenuItem(self.menu, wx.ID_EXIT, '&Quit\tESC', 'Quit application') 

     self.menu.AppendItem(self.add_entry) 
     self.menu.AppendItem(self.birthday_t) 
     self.menu.AppendItem(self.birthday_s) 
     self.menu.AppendSeparator() 
     self.menu.AppendItem(self.quit) 

     self.birthday_t.Enable(False) 

     self.menubar.Append(self.menu, '&View') 

     self.SetMenuBar(self.menubar) 

####################################################################################################################### 

     self.panel_one = wx.Panel(self) 
     self.panel_two = wx.Panel(self) 
     self.panel_three = wx.Panel(self) 

     self.panel_one.Show() 
     self.panel_two.Hide() 
     self.panel_three.Hide() 

     vbox = wx.BoxSizer(wx.VERTICAL) 

     vbox.Add(self.panel_one, 1, wx.EXPAND) 
     vbox.Add(self.panel_two, 1, wx.EXPAND) 
     vbox.Add(self.panel_three, 1, wx.EXPAND) 
     self.SetSizer(vbox) 

     p1vbox = wx.BoxSizer(wx.HORIZONTAL) 
     p2vbox = wx.BoxSizer(wx.HORIZONTAL) 
     p3vbox = wx.BoxSizer(wx.HORIZONTAL) 

     self.panel_one.SetSizer(p1vbox) 
     self.panel_two.SetSizer(p2vbox) 
     self.panel_three.SetSizer(p3vbox) 

####################################################################################################################### 

     self.email_button1 = wx.Button(self.panel_one, id=3, label='Send an Email', size=(100, 30)) 
     self.email_button2 = wx.Button(self.panel_two, id=3, label='Send an Email', size=(100, 30)) 

     p1vbox.AddStretchSpacer() 
     p1vbox.Add(self.email_button1, flag=wx.ALIGN_CENTER | wx.ALIGN_BOTTOM | wx.ALL, border=17) 
     p1vbox.AddStretchSpacer() 

     p2vbox.AddStretchSpacer() 
     p2vbox.Add(self.email_button2, flag=wx.ALIGN_CENTER | wx.ALIGN_BOTTOM | wx.ALL, border=17) 
     p2vbox.AddStretchSpacer() 

####################################################################################################################### 

     self.list = AutoWidthListCtrl(self.panel_one) 
     self.list.InsertColumn(0, 'Name', width=140) 
     self.list.InsertColumn(1, 'E-mail', width=130) 
     self.list.InsertColumn(2, 'Birthday', width=90) 

     for i in employees: 
      index = self.list.InsertStringItem(sys.maxint, i[0]) 
      self.list.SetStringItem(index, 1, i[1]) 
      self.list.SetStringItem(index, 2, i[2]) 

####################################################################################################################### 

     self.birthday_text_t = wx.StaticText(self.panel_one, label='BIRTHDAYS: TODAY', pos=(210, 15)) 
     self.birthday_text_s = wx.StaticText(self.panel_two, label='BIRTHDAYS: IN 7 DAYS', pos=(180, 15)) 
     self.add_entry_text_a = wx.StaticText(self.panel_three, label='ADD EMPLOYEE/LIST OF BIRTHDAYS', pos=(180, 15)) 
     self.grats = wx.StaticText(self.panel_one, label='GIVE YOUR CONGRATULATIONS', pos=(230, 310)) 

     birthday_text_t_font = wx.Font(18, wx.TELETYPE, wx.NORMAL, wx.BOLD) 
     self.birthday_text_t.SetFont(birthday_text_t_font) 

     birthday_text_s_font = wx.Font(13, wx.MODERN, wx.NORMAL, wx.BOLD) 
     self.birthday_text_s.SetFont(birthday_text_s_font) 

     grats_font = wx.Font(9, wx.SWISS, wx.NORMAL, wx.BOLD) 
     self.grats.SetFont(grats_font) 

     self.Bind(wx.EVT_MENU, self.onQuit, self.quit) 
     self.Bind(wx.EVT_KEY_DOWN, self.onESCQuit, self.quit) 

     self.Bind(wx.EVT_MENU, self.onPanelSwap, self.birthday_t) 
     self.Bind(wx.EVT_KEY_DOWN, self.onPanelSwap_t, self.birthday_t) 

     self.Bind(wx.EVT_MENU, self.onPanelSwap, self.birthday_s) 
     self.Bind(wx.EVT_KEY_DOWN, self.onPanelSwap_s, self.birthday_s) 

     self.Bind(wx.EVT_MENU, self.onPanelSwap, self.add_entry) 
     self.Bind(wx.EVT_KEY_DOWN, self.onPanelSwap_a, self.add_entry) 

     self.email_button1.Bind(wx.EVT_BUTTON, self.onClick) 
     self.email_button2.Bind(wx.EVT_BUTTON, self.onClick) 

####################################################################################################################### 

     self.SetSize((650, 450)) 

     self.SetTitle('Prototype') 

     self.Centre() 

     self.Show(True) 

####################################################################################################################### 

    def onQuit(self, event): 
     dial = wx.MessageDialog(None, 'Are you sure to quit?', 'Question', wx.YES_NO | wx.NO_DEFAULT | wx.ICON_QUESTION) 
     dial = dial.ShowModal() 

     if dial == wx.ID_YES: 
      self.Close() 

    def onESCQuit(self, event): 

     if event.GetKey() == wx.WXK_ESCAPE: 
      dial = wx.MessageDialog(None, 'Are you sure to quit?', 'Question', 
            wx.YES_NO | wx.NO_DEFAULT | wx.ICON_QUESTION) 

      if dial.ShowModal() == wx.ID_YES: 
       self.Close() 

####################################################################################################################### 

    def onPanelSwap(self, event): 
     event_id = event.GetId() 
     if self.panel_one.IsShown() and event_id == 3: 
      self.panel_one.Hide() 
      self.panel_two.Hide() 
      self.panel_three.Show() 

      self.birthday_t.Enable(True) 
      self.birthday_s.Enable(True) 
      self.add_entry.Enable(False) 

     elif self.panel_one.IsShown() and event_id == 2: 
      self.panel_one.Hide() 
      self.panel_two.Show() 
      self.panel_three.Hide() 

      self.birthday_t.Enable(True) 
      self.birthday_s.Enable(False) 
      self.add_entry.Enable(True) 

     elif self.panel_two.IsShown() and event_id == 3: 
      self.panel_one.Hide() 
      self.panel_two.Hide() 
      self.panel_three.Show() 

      self.birthday_t.Enable(True) 
      self.birthday_s.Enable(True) 
      self.add_entry.Enable(False) 

     elif self.panel_two.IsShown() and event_id == 1: 
      self.panel_one.Show() 
      self.panel_two.Hide() 
      self.panel_three.Hide() 

      self.birthday_t.Enable(False) 
      self.birthday_s.Enable(True) 
      self.add_entry.Enable(True) 

     elif self.panel_three.IsShown() and event_id == 2: 
      self.panel_one.Hide() 
      self.panel_two.Show() 
      self.panel_three.Hide() 

      self.birthday_t.Enable(True) 
      self.birthday_s.Enable(False) 
      self.add_entry.Enable(True) 

     elif self.panel_three.IsShown() and event_id == 1: 
      self.panel_one.Show() 
      self.panel_two.Hide() 
      self.panel_three.Hide() 

      self.birthday_t.Enable(False) 
      self.birthday_s.Enable(True) 
      self.add_entry.Enable(True) 

     event.Skip() 

####################################################################################################################### 

    def onPanelSwap_t(self, event): 
     if event.GetKey == 'shift+c': 
      self.panel_one.Show() 
      self.panel_two.Hide() 
      self.panel_three.Hide() 

      self.birthday_t.Enable(False) 
      self.birthday_s.Enable(True) 
      self.add_entry.Enable(True) 

     event.Skip() 

    def onPanelSwap_s(self, event): 
     if event.GetKey == 'shift+s': 
      self.panel_one.Hide() 
      self.panel_two.Show() 
      self.panel_three.Hide() 

      self.birthday_t.Enable(True) 
      self.birthday_s.Enable(False) 
      self.add_entry.Enable(True) 

     event.Skip() 

    def onPanelSwap_a(self, event): 
     if event.GetKey == 'shift+a': 
      self.panel_one.Hide() 
      self.panel_two.Hide() 
      self.panel_three.Show() 

      self.birthday_t.Enable(True) 
      self.birthday_s.Enable(True) 
      self.add_entry.Enable(False) 

     event.Skip() 

####################################################################################################################### 

    def onClick(self, event): 
     dlg = CustomDialog(None, title='E-mail Your Colleague') 
     result = dlg.ShowModal() 
     if result == ID_GMAIL: 
      chrome_path = 'C:/Program Files (x86)/Google/Chrome/Application/chrome.exe %s' 
      webbrowser.get(chrome_path).open('https://mail.google.com/mail') 
     elif result == ID_OUTLOOK: 
      chrome_path = 'C:/Program Files (x86)/Google/Chrome/Application/chrome.exe %s' 
      webbrowser.get(chrome_path).open('https://outlook.live.com') 
     dlg.Destroy() 

####################################################################################################################### 

def main(): 
    app = wx.App() 
    GUI(None) 
    app.MainLoop() 


if __name__ == '__main__': 
    main()

来源

2016-10-22 javanewbie

也许使用[wx.Notebook（https://wiki.wxpython.org/Simple%20wx。 Notebook％20Example），它是为了显示许多面板而创建的。 – furas

正如我知道BoxSizer将面板放在单独的单元格中，并使用面板大小来计算单元格大小。尝试在开始时对所有面板使用Show()，并且您可以同时看到所有面板 - 一个在另一个之下。

当您隐藏第一个面板时，BoxSizer不会重新计算单元格大小，它仍然显示第一个单元格，但隐藏面板，因此您不会看到其他面板。您可以使用self.Layout()来强制所有窗口重新计算大小。

def onPanelSwap(self, event): 

    ... 

    self.Layout() 

    event.Skip()

BTW：你可以使用它的设立是为了显示许多面板wx.Notebook - Example

来源

2016-10-22 11:01:28 furas

我不知道wx.Notebook。下次我会记住它。 :) self.Layout（）修复了这个问题，谢谢。 – javanewbie

wxPython：第二和第三个面板不显示/错误

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